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Today: 06 July 2020, Monday.

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#1

 

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Description A wave of protests over law enforcement abuses has highlighted concerns over artificial intelligence programs like facial recognition which critics say may reinforce racial bias.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 05 July 2020

#2

 

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Description IIT Bombay Heritage Foundation on Friday announced a grant of Rs. 2.35 crores to IIT Bombay in order to fulfill the needs of students in wake of the COVID-19 pandemic.

#Hardware & Devices
Field # Hardware & Devices
Updated 05 July 2020

#3

 

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Description Imagine being completely blind but still being able to see. Does that sound impossible? Well, it happens.

#Hardware & Devices;#Games
Field # Hardware & Devices
Updated 05 July 2020

#4

 

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Description If you are trying to ease the boredom of being stuck at home, we have an Xbox Live Gold deal for you. Check out the best Xbox Live Gold deals available today.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 04 July 2020

#5

 

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Description Need a tablet or laptop for e-learning, productivity, or entertainment? Here are five Microsoft Surface deals you shouldn’t pass up. Score up to $360 off.

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#6

 

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Description Or get just one charging stand for $16

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#7

 

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Description The Aukey Omnia 100W PD charger is usually $55. But this CNET-exclusive code will allow you to get it for just over $41.

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#8

 

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Description Fugaku's compute power focus on parsing earthquakes, weather patterns, and coughs.

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#9

 

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Description With Mi Notebook 14, Xiaomi is entering the laptop market in India. And with the Mi NoteBook 14 Horizon Edition it brings to Indian consumers the best it has to offer, India Today Tech finds in its review.

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#10

 

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Description The new Apple iMac looks like it could be a beast

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#11

 

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Description Used Apple iPads — are sold at around Rs 15,000 and the average price of smartphone is at Rs 9,000. Tablets with Android OS have few takers while laptops with basic and intermediate configurations move fast.

#Hardware & Devices
Field # Hardware & Devices
Updated 04 July 2020

#12

 

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Description The smart light bulb made it easier for us to control them, but they've been slow with innovations of late. The future does hold some promising possibilities.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#13

 

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Description A feasibility study is presented on the performance parameters of a novel on-chip antenna based on metasurface technology at terahertz band. The proposed metasurface on-chip antenna is constructed on an electrically thin high-permittivity gallium arsenide (GaAs) substrate layer. Metasurface is implemented by engraving slot-lines on an array of 11 × 11 circular patches fabricated on the top layer of the GaAs substrate and metallic via-holes implemented in the central patch of each row constituting the array, which connects the patch to the leaky-wave open-ended feeding slot-lines running underneath the patches. The slot-lines are connected to each other with a slit. A waveguide port is used to excite the array via slot-lines that couple the electromagnetic energy to the patches. The metasurface on-chip antenna is shown to exhibit an average measured gain in excess of 10 dBi and radiation efficiency above 60% over a wide frequency range from 0.41 to 0.47 THz, which is significant development over other on-chip antenna techniques reported to date. Dimensions of the antenna are 8.6 × 8.6 × 0.0503 mm3. The results show that the proposed GaAs-based metasurface on-chip antenna is viable for applications in terahertz integrated circuits.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#14

 

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Description We report on the synthesis and enhanced thermal conductivity of stable Ag-decorated 2-D graphene nanocomposite in ethylene glycol based nanofluid by laser liquid solid interaction. A surfactant free nanofluid of Ag nanoparticles anchored onto the 2-D graphene sheets were synthesized using a two-step laser liquid solid interaction approach. In order to understand a pulsed Nd:YAG laser at the fundamental frequency (λ = 1,064 nm) to ablate Ag and graphite composite target submerged in ethylene glycol (EG) to form AgNPs decorated 2-D GNs-EG based nanofluid. From a heat transfer point of view, it was observed that the thermal conductivity of this stable Ag-graphene/EG is significantly enhanced by a factor of about 32.3%; this is highest reported value for a graphene based nanofluid.

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 03 July 2020

#15

 

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Description Plasmodium vivax merozoite surface protein 3 (PvMSP3) is encoded by a multi-gene family. Of these, PvMSP3α, PvMSP3β and PvMSP3γ, are considered to be vaccine targets. Despite comprehensive analyses of PvMSP3α and PvMSP3β, little is known about structural and sequence diversity in PvMSP3γ. Analysis of 118 complete pvmsp3γ sequences from diverse endemic areas of Thailand and 9 reported sequences has shown 86 distinct haplotypes. Based on variation in insert domains, pvmsp3γ can be classified into 3 types, i.e. Belem, Salvador I and NR520. Imperfect nucleotide repeats were found in six regions of the gene; none encoded tandem amino acid repeats. Predicted coiled-coil heptad repeats were abundant in the protein and displayed variation in length and location. Interspersed phase shifts occurred in the heptad arrays that may have an impact on protein structure. Polymorphism in pvmsp3γ seems to be generated by intragenic recombination and driven by natural selection. Most P. vivax isolates in Thailand exhibit population structure, suggesting limited gene flow across endemic areas. Phylogenetic analysis has suggested that insert domains could have been subsequently acquired during the evolution of pvmsp3γ. Sequence and structural diversity of PvMSP3γ may complicate vaccine design due to alteration in predicted immunogenic epitopes among variants.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#16

 

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Description An on-chip optical vortex detector based on spin-Hall nanoslits is reported. The detector is sensitive to the spin of the incoming beam and can simultaneously record the polarization and phase singularity. Although the reported device relies on fast decaying surface plasmons, it represents an important step forward in the development of optical vortex-based integrated photonic devices.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#17

 

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Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#18

 

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Description Researchers from ETH Zurich have achieved what scientists have been attempting to do for some 20 years: in their laboratory work as part of European Horizon 2020 research projects, they have manufactured a chip on which fast ...

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#19

 

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Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#20

 

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Description TBD

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 03 July 2020

#21

 

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Description TBD

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 03 July 2020

#22

 

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Description ETH researchers have built an ultrafast chip that can speed up data transmission in fiber-optic networks. The chip combines several innovations at the same time and, given the growing demand for streaming and online services, represents a significant development. Researchers from ETH Zurich have

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#23

 

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Description Reliance Industries and Jio Platforms on Friday announced that Intel Capital will invest Rs. 1,894.50 crores in Jio Platforms at an equity value of Rs. 4.91 lakh crores and an enterprise value of Rs. 5.16 lakh crores.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#24

 

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Description Humans are able to live longer than ever before. The average lifespan is still increasing, but at the same time population is aging very quickly. And so this means that there are more worn out bodies than ever before as well. How do we repair them? Well, we have technology. Now scientists at the

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#25

 

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Description LG has introduced its new 2020 range of PuriCare air purifiers. The new range includes a PuriCare 360 Degree Air Purifier, PuriCare Mini, Puricare Pet, and Commercial PuriCare. They all come in different sizes, and offer air purification for different needs. For instance, the Commercial PuriCare is ideal for workplaces, while the PuriCare Pet is ideal for pet owners. The LG PuriCare Mini is a portable device that is easy to carry and acts as a personal air purifier of sorts.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 03 July 2020

#26

 

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Description Xiaomi seems to bring an enhanced Reading mode on MIUI 12 to offer users with an e-ink display-like experience on their smartphones. The new update will also provide options to adjust colour temperature in the Reading mode.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#27

 

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Description Lenovo K11 Power will reportedly be launch as a rebranded version of Moto G8 Power Lite. According to a tipster, the Lenovo K11 Power was spotted on Google Play Console with the phone moniker highlighted as "Motorola moto g(8) power lite Lenovo K11Power."

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 03 July 2020

#28

 

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Description LGBT+ rights groups urged Facebook on Tuesday to act on a rise in online hate speech after the death of an Egyptian activist jailed for waving the rainbow flag.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 03 July 2020

#29

 

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Description Dell XPS 13 and XPS 15 slim and light laptops have been listed on Amazon India and will be launching soon. Though the Amazon page does not mention a launch date, the two laptops may arrive in India on July 8, as the company has sent out invites for a digital event on Wednesday where it will unveil “The XPS Experience”.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#30

 

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Description Planning a new AMD build around an mATX or mini-ITX motherboard? Compare prices before you pull the trigger. ...

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#31

 

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Description PlayStation, Sony’s flagship video game division, has become the latest major brand to join hundreds others as it temporarily stops advertising on Facebook and Instagram.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 03 July 2020

#32

 

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Description Olympus OM-D Webcam Beta software can be used to turn a select range of their mirrorless cameras into high quality webcams for video conferencing.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#33

 

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Description Dell has launched its Precision 5550 workstation laptop in India. It’s targeted at professional users such as creators and engineers. Prices start at Rs.1,29,999, excluding GST, in India.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#34

 

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Description The OM-D Webcam app allows you to connect your Olympus camera with popular video-conferencing apps or even live-streaming software.

#Hardware & Devices
Field # Hardware & Devices
Updated 03 July 2020

#35

 

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Description Xbox Series X games showcase set for week of July 20

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 03 July 2020

#36

 

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Description Here we first report results of the start of the solid-state reaction at the Rh/Fe(001) interface and the structural and magnetic phase transformations in 52Rh/48Fe(001), 45Rh/55Fe(001), 68Rh/32Fe(001) bilayers from room temperature to 800 °C. For all bilayers the non-magnetic nanocrystalline phase with a B2 structure (nfm-B2) is the first phase that is formed on the Rh/Fe(001) interface near 100 °C. Above 300 °C, without changing the nanocrystalline B2 structure, the phase grows into the low-magnetization modification αlʹ (MSl ~ 825 emu/cm3) of the ferromagnetic αʹ phase which has a reversible αlʹ ↔ αʺ transition. After annealing 52Rh/48Fe(001) bilayers above 600 °C the αlʹ phase increases in grain size and either develops into αhʹ with high magnetization (MSh ~ 1,220 emu/cm3) or remains in the αlʹ phase. In contrast to αlʹ, the αhʹ ↔ αʺ transition in the αhʹ films is completely suppressed. When the annealing temperature of the 45Rh/55Fe(001) samples is increased from 450 to 800 °C the low-magnetization nanocrystalline αlʹ films develop into high crystalline perfection epitaxial αhʹ(001) layers, which have a high magnetization of ~ 1,275 emu/cm3. αhʹ(001) films do not undergo a transition to an antiferromagnetic αʺ phase. In 68Rh/32Fe(001) samples above 500 °C non-magnetic epitaxial γ(001) layers grow on the Fe(001) interface as a result of the solid-state reaction between the epitaxial αlʹ(001) and polycrystalline Rh films. Our results demonstrate not only the complex nature of chemical interactions at the low-temperature synthesis of the nfm-B2 and αlʹ phases in Rh/Fe(001) bilayers, but also establish their continuous link with chemical mechanisms underlying reversible αlʹ ↔ αʺ transitions.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#37

 

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Description Transformer noise is dominated by low frequency components, which are hard to be controlled with traditional noise control approaches. The shunt loudspeaker consisting of a closed-box loudspeaker and a shunt circuit has been proposed as an effective sound absorber by storing and dissipating the electrical energy converted from the incident sound. In this paper, an array of shunt loudspeakers is proposed to control the 100 Hz and 200 Hz components of transformer noise. The prototype under tests has a thickness of 11.8 cm, which is only 1/28 of the wavelength of 100 Hz. The sound absorption performance of the array under random incidence is analyzed with the parallel impedance method, and the arrangement of array elements is optimized. The test results in a reverberation room show that the proposed array has sound absorption coefficients of 1.04 and 0.93 at 100 Hz and 200 Hz, respectively, which provides potential of applying this type of thin absorbers for low-frequency sound control.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#38

 

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Description Next-generation consoles are expected to bring about the first software price increase in 18 years. It could be a great, and overdue, thing for the industry.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 02 July 2020

#39

 

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Description Controlled stirring of tiny volumes of aqueous fluids is of particular importance in the life sciences, e.g. in the context of microfluidic and lab-on-chip applications. Local stirring not only accelerates fluid mixing and diffusion-limited processes, but it also allows for adding controlled active noise to the fluid. Here we report on the synthesis and characterization of magnetic nano-stir bars (MNBs) with which these features can be achieved in a straightforward fashion. We also demonstrate the applicability of MNBs to cell extract droplets in microfluidic channels and we show that they can introduce active noise to cell extracts as evidenced by altered fluctuations of ensembles of cytoskeletal filaments.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#40

 

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Description Smart speakers with great sound and a wealth of features don't come cheap, but the Bose Home Speaker 500 is a strong argument that it's worth the investment.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#41

 

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Description Acute extremity arterial occlusion requires prompt revascularization. Delayed revascularization induces ischemia–reperfusion injury in the skeletal muscle. Organ injury-induced oxidative stress is widely reported, and oxidative stress is heavily involved in ischemia–reperfusion injury. This study aimed to evaluate oxidative stress in ischemia–reperfusion rat models using 3-carbamoyl PROXYL enhanced magnetic resonance imaging (3-CP enhanced MRI). Ischemia–reperfusion injury was induced through clamping the right femoral artery in rats, with a 4-h ischemia time in all experiments. 3-CP enhanced MRI was performed to evaluate oxidative stress, and the rats were divided into 3 reperfusion time groups: 0.5, 2, and 24 h. Signal intensity was evaluated using 3-CP enhanced MRI and compared in the ischemia–reperfusion and intact limbs in the same rat. Furthermore, the effect of edaravone (radical scavenger) was evaluated in the 4-h ischemia—24-h reperfusion injury rat model. The signal intensity of the ischemia–reperfusion limb was significantly stronger than that of the intact limb, suggesting that oxidative stress was induced in the ischemia–reperfusion muscle. Edaravone administration reduced the oxidative stress in the ischemia–reperfusion limb. The signal intensity of the ischemia–reperfusion limb was stronger than that of the intact limb, presumably reflecting the oxidative stress in the former. 3-CP MRI examination shows promise for effective assessment of oxidative stress and may facilitate early diagnosis of ischemia–reperfusion injury.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#42

 

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Description

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 02 July 2020

#43

 

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Description A recent study describes the yield and clinical utility of epilepsy gene panel testing in a cohort of adults with epilepsy and intellectual disability. These findings are similar to those in children with developmental epileptic encephalopathies and support the utility of testing in this subgroup of adults with epilepsy.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#44

 

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Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#45

 

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Description Perfect lenses, superlenses and time-reversal mirrors can support and spatially separate evanescent waves, which is the basis for detecting subwavelength information in the far field. However, the inherent limitations of these methods have prevented the development of systems to dynamically distinguish subdiffraction-limited signals. Utilizing the physical merits of spoof surface plasmon polaritons (SPPs), we demonstrate that subdiffraction-limited signals can be transmitted on planar integrated SPP channels with low loss, low channel interference, and high gain and can be radiated with a very low environmental sensitivity. Furthermore, we show how deep subdiffraction-limited signals that are spatially coupled can be distinguished after line-of-sight wireless transmission. For a visualized demonstration, we realize the high-quality wireless communication of two movies on subwavelength channels over the line of sight in real time using our plasmonic scheme, showing significant advantages over the conventional methods. The unique properties of surface plasmons enable wireless transmission of signals separated by less than one wavelength. Until recently, it was considered impossible to distinguish signals with sub-wavelength separation, due to the so-called diffraction limit. This limit can be overcome using artificial structures called metamaterials, but it is difficult to integrate these new components with conventional electronics. Now, Tie Jun Cui at Southeast University in Nanjing, China, and co-workers have shown that sub-wavelength signals can be transmitted using surface plasmon polaritons (SPPs)—combinations of electromagnetic waves and charge motion that travel on the surface of a metal. By encoding signals in ‘spoof’ SPPs that mimic natural SPPs, the team were able to wirelessly transmit two high-definition movies on channels just one-tenth of a wavelength apart, even with a concrete wall in the way.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#46

 

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Description The researchers of the University of Oulu, together with their partners from VTT Research Center and Polar Electro, developed a new system of electrodes that can be implemented into our clothing and withstand our daily routines.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#47

 

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Description TBD

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 02 July 2020

#48

 

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Description The inCharge6 is designed for charging on the go and works like a Swiss knife.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#49

 

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Description Single- and two-photon holographic recordings were performed in a photopolymer material consisting of two types of monomers: an acrylamide (1,4-bis(acryloyl)piperazine) and an epoxide ((bis(4-oxiran-2-ylmethoxy)phenyl) sulfide). Thus, cationic ring-opening polymerization and free-radical polymerization of the monomers were simultaneously initiated. The arylsulfonium salt (2-(N,N,N-triethylammonium)methyl-9-oxo-10-(4-heptyloxyphenyl)-9H-thioxanthenium dihexafluorophosphate) was chosen as the photoinitiator. Effective photopolymerization conditions were found for both (single- and two-photon) photoinitiation modes depending on the recording light intensity. The concentrations of the components (monomers and photoinitiator) in the photopolymer was optimized, and a refractive index change of as much as 0.0015 was achieved. Single- and two-photon holographic recording was investigated in photopolymer material consisting of two types of monomers: acrylamide (BAP) and epoxy (BOPS). Thus a cationic ring-opening polymerization and free-radical polymerization of monomers were initiated simultaneously. The arylsulfonium salt—cationic derivative of thioxanthenonium (CDTX) was chosen as the photoinitiator. The refractive index change n1 and maximum recording rate (dn1/dt)max of holographic gratings were found in two-photon photoinitiation modes depending on the concentration of BAP (the molar fraction of BAP) in photopolymer composition.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#50

 

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Description A team of scientists led by the University of Nevada Reno physicist Hiroshi Sawada has demonstrated that numerical modeling accurately reproduces X-ray images using laser-produced X-rays. The images were obtained using the university's chirped pulse, amplification-based, 50-terawatt Leopard laser

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 02 July 2020

#51

 

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Description The universe, as seen through the lens of quantum mechanics, is a noisy, crackling space where particles blink constantly in and out of existence, creating a background of quantum noise whose effects are normally far too subtle to detect in everyday objects. Now for the first time, a team led by

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#52

 

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Description Google is working on bringing Smart Compose feature to Google Messages, WhatsApp, and Telegram through the Gboard keyboard, according to a new report. This feature was spotted in the beta version of Gboard, Google’s own keyboard native to Android, with version 9.5.12.317844448.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#53

 

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Description With $360 off the usual price, the Microsoft Surface Pro 7 is an even better deal for those looking for a two-in-one laptop to enhance their lives.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#54

 

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Description Fujifilm believes it can push tape storage technology to 400TB capacities in a single cartridge.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#55

 

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Description Part of the problem is that many countries lack cohesive policies, regulations, and legislation to deal with e-waste.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#56

 

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Description Intel joins a string of high-profile investors including Facebook, Silver Lake, and KKR, in investing into Jio Platforms in recent months.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#57

 

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Description It’s a step down from the W5700X in almost every way—including price.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#58

 

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Description County executive vows to keep "ignorance, stupidity, or obstinance" from risking lives.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#59

 

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Description The gravitational wave detector's sensitivity can be boosted with the right light.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#60

 

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Description Density functional theory (DFT) and the non-equilibrium Green’s function (NEGF) formalism in the linear response regime were employed to investigate the impact of doping on the electronic and phononic transport properties in an anthracene molecule attached to two metallic zigzag graphene nanoribbons (ZGNRs). Boron (B) and nitrogen (N) atoms were used for doping and co-doping (NB) of carbon atoms located at the edge of the anthracene molecule. Our results show that B doping enhances the electronic transport in comparison with the other dopants which is due to its ability to increase the binding energy of the system. The chemical doping of the anthracene molecule mainly impacts on the thermopower which results in a significantly enhanced electronic contribution of the figure of merit. On the contrary, considering the effect of phononic thermal conductance suppresses the figure of merit. However, by taking into account the effect of both electron and phonon contributions to the thermal conductance, we find that the thermoelectric efficiency can be improved by B doping. The potential role of the phononic thermal conductance in shaping the thermoelectric properties of molecular junctions has been ignored in numerous studies, however, our findings demonstrate its importance for a realistic and accurate estimation of the thermoelectric figure of merit.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#61

 

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Description Self-assembled quantum dots grown by molecular beam epitaxy have been a hotbed for various fundamental research and device applications over the past decades. Among them, InAs/GaAs quantum dots have shown great potential for applications in quantum information, quantum computing, infrared photodetection, etc. Though intensively studied, some of the optical nonlinear properties of InAs/GaAs quantum dots, specifically the associated two-photon absorption of the wetting and barrier layers, have not been investigated yet. Here we report a study of the photoluminescence of these dots by using direct two-photon excitation. The quadratic power law dependence of the photoluminescence intensity, together with the ground-state resonant peak of quantum dots appearing in the photoluminescence excitation spectrum, unambiguously confirms the occurrence of the direct two-photon absorption in the dots. A three-level rate equation model is proposed to describe the photogenerated carrier dynamics in the quantum dot-wetting layer-GaAs system. Moreover, higher-order power law dependence of photoluminescence intensity is observed on both the GaAs substrate and the wetting layer by two-photon excitation, which is accounted for by a model involving the third-harmonic generation at the sample interface. Our results open a door for understanding the optical nonlinear effects associated with this fundamentally and technologically important platform.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#62

 

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Description Recently it has been proposed that the long-range electronic order formed by trimerons in magnetite should be frustrated due to the great degeneracy of arrangements linking trimerons. This result has important consequences as charge ordering from the condensed minority band electrons leads to a complex 3D antiferro orbital order pattern. Further more, the corner sharing tetrahedra structure of spinel B-sites supports frustration for antiferromagnetic alignments. Therefore frustration due to competing interactions will itself induce disorder and very likely frustration in the spin orientations. Here we present very low temperature specific heat data that show two deviations to the magnons and phonons contributions, that we analyze in terms of Schottky-type anomalies. The first one is associated with the thermal activation across both ferroelastic twin and ferromagnetic anti-phase domains. The second Schottky-type anomaly displays an inverse (1/H) field dependence which is a direct indication of the disordered glassy network with macroscopically degenerated singular ground states.

#Hardware & Devices
Field # Hardware & Devices
Updated 02 July 2020

#63

 

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Description Alginate-degrading bacteria or alginate lyases can be used to oligomerize alginate. In this study, an alginate-degrading bacterium with high alginolytic activity was successfully screened by using Sargassum fusiforme sludge. When the strain was grown on a plate containing sodium alginate, the transparent ring diameter (D) was 2.2 cm and the ratio (D/d) of transparent ring diameter to colony diameter (d) was 8.8. After 36 h in culture at a temperature of 28 °C shaken at 150 r/min, the enzymatic activity of the fermentation supernatant reached 160 U/mL, and the enzymatic activity of the bacterial precipitate harvested was 2,645 U/mL. The strain was named Cobetia sp. cqz5-12. Its genome is circular in shape, 4,209,007 bp in size, with a 62.36% GC content. It contains 3,498 predicted coding genes, 72 tRNA genes, and 21 rRNA genes. The functional annotations for the coding genes demonstrated that there were 181 coding genes in the genome related to carbohydrate transport and metabolism and 699 coding genes with unknown functions. Three putative coding genes, alg2107, alg2108 and alg2112, related to alginate degradation were identified by analyzing the carbohydrate active enzyme (CAZy) database. Moreover, proteins Alg2107 and Alg2112 were successfully expressed and exhibited alginate lyase activity.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 02 July 2020

#64

 

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Description This multiport charger has an 18-watt QC port, a USB-C port, two more USB ports and a flashlight.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#65

 

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Description Powdered sugar is the special ingredient in a Rice University recipe for mimicking the body’s intricate, branching blood vessels in lab-grown tissues. In research published in the journal Nature Biomedical Engineering, Rice bioengineers showed they could keep densely packed cells alive for two we

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 01 July 2020

#66

 

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Description Poco M2 Pro will launch in India on July 7, Poco India has revealed through its official social media channels. The company, which is a sub-brand of Xiaomi in the country, has also sent out media invites for the launch that will take place virtually.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#67

 

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Description Dish buys former Sprint prepaid business amid plans to build its own 5G network.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#68

 

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Description After the first benchmarks popped up online, different publications have either praised the results or indicated they should be cause ...

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#69

 

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Description The tender for 800 such cameras was floated by Railway PSU RailTel last month for the AI-based surveillance cameras that measure body temperatures of individuals and even detect whether a person is wearing a mask or not.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#70

 

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Description The age of cheap wireless keyboards has arrived. We've rounded up all the best wireless keyboard deals, so you never have to pay through the roof for one again.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#71

 

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Description A team of researchers affiliated with multiple institutions in South Korea and one from the U.S. has built a small, wide-field-of-view camera based on the structure of fish eyes. In their paper published in the journal Nature ...

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#72

 

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Description Dark matter must exist, but has evaded all attempts to find it. Now comes our boldest plan yet – sensing its minuscule gravitational force as it brushes past us

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#73

 

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Name
Description "Election" can trigger Alexa; "Montana" can trigger Cortana.

#Hardware & Devices;#Artificial intelligence
Field # Hardware & Devices
Updated 01 July 2020

#74

 

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Description A highly stable and magnetized citric acid (CA)-functionalized iron oxide aqueous colloidal solution (Fe3O4@CA) was synthesized by using a simple and rapid method of one-step co-participation via a chemical reaction between Fe3+ and Fe2+ in a NaOH solution at 65 °C, followed by CA addition to functionalize the Fe3O4 surface in 25 min. The NPs were synthesized at lower temperatures and shortened time compared with conventional methods. Surface functionalization is highly suggested because bare Fe3O4 nanoparticles (Fe3O4 NPs) are frequently deficient due to their low stability and hydrophilicity. Hence, 19 nm-sized Fe3O4 NPs coated with CA (Fe3O4@CA) were synthesized, and their microstructure, morphology, and magnetic properties were characterized using X-ray diffraction, transmission electron microscopy, Zeta potential, Fourier transform infrared spectroscopy, and vibrating sample magnetometer. CA successfully modified the Fe3O4 surface to obtain a stabilized (homogeneous and well dispersed) aqueous colloidal solution. The Zeta potential value of the as-prepared Fe3O4@CA increases from − 31 to − 45 mV. These CA-functionalized NPs with high magnetic saturation (54.8 emu/g) show promising biomedical applications.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#75

 

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Description Microscopes of visible light allow us to see tiny objects such living cells and their interior. Yet, they cannot discern how electrons are distributed among atoms in solids. Now researchers around Prof. Eleftherios Goulielmakis of the Extreme Photonics Labs at the University of Rostock and the Max

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 01 July 2020

#76

 

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Description Excitonic properties in quantum dot (QD) structure are essential properties for applications in quantum computing, cryptography, and photonics. Top-down fabrication and bottom-up growth by self-assembling for forming the QDs have shown their usefulness. These methods, however, still inherent issues in precision integrating the regimes with high reproducibility and positioning to realize the applications with on-demand quantum properties on Si platforms. Here, we report on a rational synthesis of embedding atomically thin InAs in nanowire materials on Si by selective-area regrowth. An extremely slow growth rate specified for the synthesis demonstrated to form smallest quantum structures reaching nuclear size, and provided good controllability for the excitonic states on Si platforms. The system exhibited sharp photoluminescence spectra originating from exciton and bi-exciton suggesting the carriers were confined inside the nuclei. The selective-area regrowth would open new approach to integrate the exciton states with Si platforms as building-blocks for versatile quantum systems.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#77

 

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Description A number of physical arrangements for acoustic rainbow sensors have been suggested, where the aim is to separate different frequency components into different physical locations along the sensor. Although such spatial discrimination has been achieved with several designs of sensor, the resulting frequency responses at a given position along the sensor are generally not smoothly varying. In contrast, the cochlea provides an interesting natural example of a rainbow sensor, which has an exponential frequency distribution and whose response does vary smoothly with frequency. The design of a rainbow sensor is presented that has a number of discrete resonators and an exponential frequency distribution. We discuss the conditions for a smoothly varying frequency response in such a sensor, as part of a broader design strategy. It is shown that the damping within the resonators determines the trade-off between the frequency resolution and the number of elements required to achieve a smooth response. The connection is explained between this design and that of an effective acoustic absorber. The finite number of hair cells means that the cochlea itself can be thought of as being composed of discrete units and the conditions derived above are compared with those that are observed in the cochlea.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#78

 

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Description To evaluate hospital mortality and associated risk factors for acute exacerbations of idiopathic pulmonary fibrosis (AEIPF). Emphases were put on incidence and impact of extra-pulmonary organ failures. Patients diagnosed with AEIPF from July 2014 to September 2018 were enrolled. Clinical data were collected. Acute physiology and chronic health evaluation II (APACHE II) and simplified acute physiological score II (SAPS II) were calculated. Extra-pulmonary organ failures were diagnosed upon criteria of sequential organ failure assessment (SOFA). Forty-five patients with AEIPF were included. Eighteen patients (40.0%) developed extra-pulmonary organ failures, and 25 patients (55.6%) died during hospitalization. Serum C-reactive protein (CRP) (p = 0.001), SAPS II (p = 0.004), SOFA (p = 0.001) were higher, whereas arterial oxygen pressure (PaO2)/ fractional inspired oxygen (FiO2) (p = 0.001) was lower in non-survivors than survivors. More non-survivors developed extra-pulmonary organ failures than survivors (p = 0.002). After adjustment, elevated serum CRP (OR 1.038, p = 0.049) and extra-pulmonary organ failure (OR 13.126, p = 0.016) were independent predictors of hospital mortality in AEIPF. AEIPF had high hospital mortality and occurrence of extra-pulmonary organ failure was common. Elevated serum CRP and extra-pulmonary organ failure had predictive values for mortality.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#79

 

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Description We present experimental data and their theoretical description on spin Hall magnetoresistance (SMR) in bilayers consisting of a heavy metal (H) coupled to in-plane magnetized ferromagnetic metal (F), and determine contributions to the magnetoresistance due to SMR and anisotropic magnetoresistance (AMR) in five different bilayer systems: $$hbox {W}/ ext {Co}_{20} ext {Fe}_{60} ext {B}_{20}$$, $$ ext {Co}_{20} ext {Fe}_{60} ext {B}_{20}/hbox {Pt}$$, $$hbox {Au}/ ext {Co}_{20} ext {Fe}_{60} ext {B}_{20}$$, W/Co, and Co/Pt. The devices used for experiments have different interfacial properties due to either amorphous or crystalline structures of constitutent layers. To determine magnetoresistance contributions and to allow for optimization, the AMR is explicitly included in the diffusion transport equations in the ferromagnets. The results allow determination of different contributions to the magnetoresistance, which can play an important role in optimizing prospective magnetic stray field sensors. They also may be useful in the determination of spin transport properties of metallic magnetic heterostructures in other experiments based on magnetoresistance measurements.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#80

 

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Description With the rapid development of short-pulse intense laser sources, studies of matter under extreme irradiation conditions enter further unexplored regimes. In addition, an application of X-ray Free-Electron Lasers (XFELs) delivering intense femtosecond X-ray pulses, allows to investigate sample evolution in IR pump - X-ray probe experiments with an unprecedented time resolution. Here we present a detailed study of the periodic plasma created from the colloidal crystal. Both experimental data and theory modeling show that the periodicity in the sample survives to a large extent the extreme excitation and shock wave propagation inside the colloidal crystal. This feature enables probing the excited crystal, using the powerful Bragg peak analysis, in contrast to the conventional studies of dense plasma created from bulk samples for which probing with Bragg diffraction technique is not possible. X-ray diffraction measurements of excited colloidal crystals may then lead towards a better understanding of matter phase transitions under extreme irradiation conditions.

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 01 July 2020

#81

 

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Description Should you buy a MacBook Air or a Mac Mini? That's what we found out when we pitted the Mac Mini versus MacBook Air in a battle over lightweight computing.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#82

 

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Description The Summer Game Fest kicks off July 21 and gives you a week to play dozens of yet-to-be-released Xbox One games.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 01 July 2020

#83

 

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Description Fruit ripening is influenced by multiple plant hormones and the regulation of genes. However, studies on posttranscriptional regulators (e.g., miRNAs) of fruit growth and ripening are limited. We used miRNA sequencing and degradome methods to identify miRNAs and their target genes in melon (Cucumis melo cv. Hetao melon). A total of 61 conserved miRNAs and 36 novel miRNAs were identified from fruit growth, ripening, climacteric, and postclimacteric developmental stage samples, of which 32 conserved miRNAs were differentially expressed between developmental stage samples. Sixty-two target genes of 43 conserved miRNAs and 1 novel miRNA were identified from degradome sequencing. To further investigate miRNA influencing fruit ripening, transgenic melon plants overexpressing pre-cme-miR393 (cme-miR393-OE) were generated and characterized. The results showed that fruit ripening was delayed in cme-miR393-OE transgenic lines compared to nontransgenic fruits. The target of cme-miR393 was also identified, and the expression of CmAFB2 was repressed in transgenic plants. These results provide evidence that miRNA regulates melon fruit ripening and provide potential targets to improve the horticultural traits of melon fruit.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#84

 

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Description Scientists from the USC Stem Cell laboratories of Neil Segil and Justin Ichida are whispering the secrets of a simpler way to generate the sensory cells of the inner ear. Their approach uses direct reprogramming to produce sensory cells known as “hair cells,” due to their hair-like protrusions that

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#85

 

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Description Especially for the 4th of July sales, this Ring Video Doorbell and Echo Dot Combo is only $80 right now at Amazon.

#Hardware & Devices;#Security
Field # Hardware & Devices
Updated 01 July 2020

#86

 

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Description Nikon officially confirmed its Nikon Photo Contest for the year. All the details will be available on the company's website in a short time.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#87

 

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Description Quantum fluctuations can “kick” objects on the human scale, a new study reports. MIT physicists have observed that LIGO’s 40-kilogram mirrors can move in response to tiny quantum effects.

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#88

 

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Description Stevens researchers develop a ferromagnetic semiconductor that works at room temperature, solving one of science's most intractable problems As our smartphones, laptops, and computers get smaller and faster, so do the transistors inside them that control the flow of electricity and store inform

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#89

 

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Description A Stanford-led team has invented a way to store data by sliding atomically thin layers of metal over one another, an approach that could pack more data into less space than silicon chips, while also using less energy. The research, led by Aaron Lindenberg, associate professor of materials science

#Hardware & Devices
Field # Hardware & Devices
Updated 01 July 2020

#90

 

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Description Single sign-on systems (SSOs) allow us to log in to multiple websites and applications using a single username and password combination. But these are third party systems usually handled by Big Tech companies who have been reported to gather and leak personal information without user consent. Now, r

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 01 July 2020

#91

 

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Name
Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#92

 

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Name
Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#93

 

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Name
Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#94

 

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Name
Description TBD

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 30 June 2020

#95

 

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Name
Description The objective is to create a path using directional building blocks.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#96

 

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Description Facebook is trying to make VR glasses thinner and more "socially acceptable." The company in a new research paper has revealed its glasses-like prototype virtual reality (VR) headset with a display measuring 8.9mm thick which is the same thickness as a regular smartphone.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#97

 

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Description Leica may soon introduce a new camera called Leica M10-R which looks similar to the M10 Monochrom. But unlike the black-and-white camera, M10-R will take coloured photos.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#98

 

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Description The Surface Book 3 is a dang fine machine, but it’s pricey, and most people probably won’t need or use all the versatility it offers.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#99

 

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Description Xbox Series X director accepts that the console could be faster on paper, but prefered performance consistency

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 30 June 2020

#100

 

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Description Dell and VMware’s integration and relationship is bright, says president Jeff Boudreau, while Dell Technologies Cloud is besting HPE GreenLake.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#101

 

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Description A team researchers at Facebook have created a virtual reality headset that's not much larger than a (bulky) pair of sunglasses.

#Hardware & Devices;#Medicine & Human body
Field # Hardware & Devices
Updated 30 June 2020

#102

 

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Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#103

 

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Description In a tense time when a pandemic rages, politicians wrangle for votes and protesters demand racial justice, a little politeness and courtesy go a long way. Now researchers at Carnegie Mellon University have developed an automated ...

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#104

 

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Description Facebook researchers have developed a lightweight, sunglasses-like VR headset prototype that could make virtual reality technology much less cumbersome.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#105

 

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Description Apple supplier Japan Display Inc reported on Tuesday its first quarterly net profit in more than three years, boosted by the sale of its stake in organic light-emitting diode (OLED) panel affiliate JOLED.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#106

 

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Description Like Bigfoot and the Loch Ness monster, critical spin fluctuations in a magnetic system haven’t been captured on film. Unlike the fabled creatures, these fluctuations – which are highly correlated electron spin patterns – do actually exist, but they are too random and turbulent to be seen in real ti

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#107

 

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Description Acer's Predator Triton 500 isn't inexpensive, but it has great hardware for the price. That makes the Triton 500 a superb value for a high-end gaming laptop.

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#108

 

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Description AMD continues to dominate retail CPU listings, with most of the market share and revenue, at least at Mindfactory. But ...

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#109

 

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Description The latest deals on Nikon’s super-fast, high-resolution DSLR

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#110

 

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Description Upgrade for a pro-level DSLR camera for less than you might think

#Hardware & Devices
Field # Hardware & Devices
Updated 30 June 2020

#111

 

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Description This retrospective study is to evaluate refractive and visual outcomes of topography-guided femtosecond laser-assisted in situ keratomileusis (TGL) for correcting corneal high-order aberrations (HoA) after multifocal intraocular lens (mIOL) implantation. Twenty-eight eyes of 28 patients with both corrected distance visual acuity (CDVA) under 20/25 and subjective visual discomfort at 3 months after mIOL implantation were included in the study. TGL was performed to correct corneal HoA. Visual acuity, manifest refraction, and corneal HoA were measured 3 months after TGL. CDVA was improved in 22 (78.57%) of 28 eyes after TGL. Uncorrected distance visual acuity (0.12 ± 0.16 logMAR) and uncorrected near visual acuity (0.081 ± 0.16 logMAR) were better than those before TGL (P < 0.001). Residual refractive astigmatism showed no difference compared to that before TGL. Root mean square (RMS) of HoA (P = 0.012), spherical aberration (P = 0.013), and RMS of coma (P = 0.001) were reduced relative to those before TGL. Amount of improvement in CDVA was correlated with amount of reduced coma RMS (R = 0.524; P = 0.005) and spherical aberration (R = 0.443; P = 0.021). TGL showed to improve both refractive and visual outcomes in patients with mIOL implantation by correcting corneal HoA.

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 30 June 2020

#112

 

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Description 2′-Fucosyllactose (2′-FL), a major component of fucosylated human milk oligosaccharides, is beneficial to human health in various ways like prebiotic effect, protection from pathogens, anti-inflammatory activity and reduction of the risk of neurodegeneration. Here, a whole-cell fluorescence biosensor for 2′-FL was developed. Escherichia coli (E. coli) was engineered to catalyse the cleavage of 2′-FL into l-fucose and lactose by constitutively expressing α-l-fucosidase. Escherichia coli ∆L YA, in which lacZ is deleted and lacY is retained, was employed to disable lactose consumption. E. coli ∆L YA constitutively co-expressing α-l-fucosidase and a red fluorescence protein (RFP) exhibited increased fluorescence intensity in media containing 2′-FL. However, the presence of 50 g/L lactose reduced the RFP intensity due to lactose-induced cytotoxicity. Preadaptation of bacterial strains to fucose alleviated growth hindrance by lactose and partially recovered the fluorescence intensity. The fluorescence intensity of the cell was linearly proportional to 1–5 g/L 2′-FL. The whole-cell sensor will be versatile in developing a 2′-FL detection system.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#113

 

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Description In this work, InGaN/GaN multiple-quantum-wells light-emitting diodes with and without graphene transparent conductive electrodes are studied with current-voltage, electroluminescence, and time-resolved electroluminescence (TREL) measurements. The results demonstrate that the applications of graphene electrodes on LED devices will spread injection carriers more uniformly into the active region and therefore result in a larger current density, broader luminescence area, and stronger EL intensity. In addition, the TREL data will be further analyzed by employing a 2-N theoretical model of carrier transport, capture, and escape processes. The combined experimental and theoretical results clearly indicate that those LEDs with graphene transparent conductive electrodes at p-junctions will have a shorter hole transport time along the lateral direction and thus a more efficient current spreading and a larger luminescence area. In addition, a shorter hole transport time will also expedite hole capture processes and result in a shorter capture time and better light emitting efficiency. Furthermore, as more carrier injected into the active regions of LEDs, thanks to graphene transparent conductive electrodes, excessive carriers need more time to proceed carrier recombination processes in QWs and result in a longer carrier recombination time. In short, the LED samples, with the help of graphene electrodes, are shown to have a better carrier transport efficiency, better carrier capture efficiency, and more electron-hole recombination. These research results provide important information for the carrier transport, carrier capture, and recombination processes in InGaN/GaN MQW LEDs with graphene transparent conductive electrodes.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#114

 

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Description It’s common knowledge that the human body consists of trillions of cells. The cell nucleus, which houses DNA, is under attack every second of every day by environmental and behavioral factors. Researchers from Harvard University and the University of Texas Medical Branch at Galveston (UTMB) recently

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#115

 

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Description PS5 Digital Edition set to be $100 cheaper!

#Hardware & Devices;#Gadgets;#Entertainments;#Games
Field # Hardware & Devices
Updated 29 June 2020

#116

 

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Description Renders of Horizon Forbidden West and Cyberpunk 2077 special edition PlayStation 5 consoles look stunning

#Hardware & Devices;#Gadgets;#Entertainments;#Games
Field # Hardware & Devices
Updated 29 June 2020

#117

 

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Description For most popular apps and operating systems, there are keyboard shortcuts designed with the intention to minimize the time and…...

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#118

 

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Description And frankly, that should worry you.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#119

 

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Description We have rounded up all the best Amazon Echo deals on the Amazon Echo, Amazon Echo Dot, and the Amazon Echo Show.

#Hardware & Devices;#Artificial intelligence
Field # Hardware & Devices
Updated 29 June 2020

#120

 

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Description Tech conferences, movies, music fests, political rallies and sports events have all been affected by the COVID-19 pandemic.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 29 June 2020

#121

 

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Description Researchers have developed an Internet of things (IoT) device for soap dispensers which they say can ensure that people wash their hands properly for over 20 seconds as per the World Health Organization guidelines for COVID-19.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#122

 

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Description The new malware variant is aiming at mining the Monero cryptocurrency using a known miner, XMRig.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#123

 

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Description Over the last few decades, as the information era has matured, it has shaped the world of cryptography and made it a varied landscape. Amongst the myriad encoding methods and cryptosystems currently available for ensuring ...

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 29 June 2020

#124

 

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Description Cheap Chromebooks are a dime a dozen these days. But how about one that feels like it's worth twice the cost? Enter the Lenovo Chromebook Flex 5.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 29 June 2020

#125

 

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Name
Description TBD

#Hardware & Devices;#Entertainments;#Games
Field # Hardware & Devices
Updated 29 June 2020

#126

 

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Name
Description TBD

#Hardware & Devices;#Gadgets;#Entertainments;#Games
Field # Hardware & Devices
Updated 29 June 2020

#127

 

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Description Researchers at ETH have provided the first theoretical explanation for how electrical current is conducted in semiconductors made of nanocrystals. In the future, this could lead to the development of new sensors, lasers or LEDs for TV screens. A few years ago, we were introduced to TV screens fea

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#128

 

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Description TBD

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#129

 

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Description Despite their simplicity, monolayer cell cultures are not able to accurately predict drug behavior in vivo due to their inability to accurately mimic cell-cell and cell-matrix interactions. In contrast, cell spheroids are able to reproduce these interactions and thus would be a viable tool for testing drug behavior. However, the generation of homogenous and reproducible cell spheroids on a large scale is a labor intensive and slow process compared to monolayer cell cultures. Here, we present a droplet-based microfluidic device for the automated, large-scale generation of homogenous cell spheroids in a uniform manner. Using the microfluidic system, the size of the spheroids can be tuned to between 100 and 130 μm with generation frequencies of 70 Hz. We demonstrated the photothermal therapy (PTT) application of brain tumor spheroids generated by the microfluidic device using a reduced graphene oxide-branched polyethyleneimine-polyethylene glycol (rGO-BPEI-PEG) nanocomposite as the PTT agent. Furthermore, we generated uniformly sized neural stem cell (NSC)-derived neurospheres in the droplet-based microfluidic device. We also confirmed that the neurites were regulated by neurotoxins. Therefore, this droplet-based microfluidic device could be a powerful tool for photothermal therapy and drug screening applications. A microfluidic device for the efficient production of three-dimensional ‘spheroid’ cell cultures could accelerate the discovery and testing of therapeutic agents. These small clumps of cells can better recapitulate the physiology of the tissue environment than two-dimensional cultures, but are challenging to produce in a high-throughput fashion. Researchers led by Prof. Bong Geun Chung of Sogang University, Seoul, Korea have now developed a system that can generate 42,000 spheroids/h with minimal user intervention. As an initial demonstration, they produce brain tumor-derived spheroids, and use these to test the cancer-killing efficacy of a therapy based on heated graphene-based nanoparticles. Prof. Chung and colleagues subsequently employ their device to assess the detrimental effects of the neurotoxin thapsigargin on neural stem cell-derived spheroids, highlighting the potential value of this platform for high-throughput cell screening assays.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#130

 

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Description Save up to $260 when you get the Microsoft Surface Pro 7 and Laptop 3 at Amazon and Best Buy today ahead of 4th of July.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020

#131

 

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Description The rumored cheaper version of the Xbox Series X could be announced soon, reports say.

#Hardware & Devices;#Entertainments
Field # Hardware & Devices
Updated 29 June 2020

#132

 

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Description Polycyathus chaishanensis is a symbiotic caryophyllid coral described from a single population in a tidal pool off Chaishan, Kaohsiung, Taiwan. Due to its rarity, P. chaishanensis was declared a critically-endangered species under the Taiwan Wildlife Protection Act. In May 2017, a P. chaishanensis colony was discovered in the intertidal area of the Datan Algal Reef, Taoyuan, Taiwan. To determine whether this is a stable population in the algal reef, a demographic census—including data on occurrence, distribution, and colony size—was carried out in the algal reef in southern Taoyuan. Intertidal censuses and sediment collections were conducted at five different sections—Baiyu, Datan G1, Datan G2, Yongxing, and Yongan algal reefs—during the monthly spring low tide from July 2018 to January 2019. In total, 84 colonies—23 in Datan G1 and 61 in Datan G2—were recorded from a tidal range of − 160 to − 250 cm, according to the Taiwan Vertical Datum 2001 compiled by the Central Weather Bureau. No P. chaishanensis was found in Baiyu, Yongxing, or Yongan. The P. chaishanensis colony sizes ranged from 2.55 to 81.5 cm in diameter, with the larger P. chaishanensis present in the lower intertidal zone. Sediment was extremely high, with monthly site averages ranging from 3,818.26 to 29,166.88 mg cm−2 day−1, and there was a significant difference between sites and months, both of which affected the distribution of P. chaishanensis in the algal reef. Our study confirms the existence of a second population of P. chaishanensis in Taiwan, highlighting the importance of the Datan Algal Reef for the survival and protection of this critically-endangered caryophyllid coral and why it is so urgent that the reef should be conserved.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 29 June 2020

#133

 

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Description Understanding long-term trends in atmospheric concentrations of carbon dioxide (pCO2) has become increasingly relevant as modern concentrations surpass recent historic trends. One method for estimating past pCO2, the stable carbon isotopic fractionation associated with photosynthesis (Ɛp) has shown promise over the past several decades, in particular using species-specific biomarker lipids such as alkenones. Recently, the Ɛp of more general biomarker lipids, organic compounds derived from a multitude of species, have been applied to generate longer-spanning, more ubiquitous records than those of alkenones but the sensitivity of this proxy to changes in pCO2 has not been constrained in modern settings. Here, we test Ɛp using a variety of general biomarkers along a transect taken from a naturally occurring marine CO2 seep in Levante Bay of the Aeolian island of Vulcano in Italy. The studied general biomarkers, loliolide, cholesterol, and phytol, all show increasing depletion in 13C over the transect from the control site towards the seep, suggesting that CO2 exerts a strong control on isotopic fractionation in natural phytoplankton communities. The strongest shift in fractionation was seen in phytol, and pCO2 estimates derived from phytol confirm the utility of this biomarker as a proxy for pCO2 reconstruction.

#Hardware & Devices;#Gadgets
Field # Hardware & Devices
Updated 29 June 2020

#134

 

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Description Topological lasers are immune to imperfections and disorder. They have been recently demonstrated based on many kinds of robust edge states, which are mostly at the microscale. The realization of 2D on-chip topological nanolasers with a small footprint, a low threshold and high energy efficiency has yet to be explored. Here, we report the first experimental demonstration of a topological nanolaser with high performance in a 2D photonic crystal slab. A topological nanocavity is formed utilizing the Wannier-type 0D corner state. Lasing behaviour with a low threshold of approximately 1 µW and a high spontaneous emission coupling factor of 0.25 is observed with quantum dots as the active material. Such performance is much better than that of topological edge lasers and comparable to that of conventional photonic crystal nanolasers. Our experimental demonstration of a low-threshold topological nanolaser will be of great significance to the development of topological nanophotonic circuitry for the manipulation of photons in classical and quantum regimes. A high-performance topological laser could pave the way for its use in a wide range of nanophotonic applications. Semiconductor lasers are the most common type of laser, but their performance deteriorates if there are any structural defects in the lasing material. Topological lasers allow light to travel around a cavity of any shape without scattering, promising better performing lasers. However, creating a topological laser with a low threshold for lasing and high efficiency has proved challenging. A team of Chinese researchers led by Xiulai Xu from the Chinese Academy of Sciences have now developed a topological laser made from a two-dimensional photonic crystal nanocavity slab with a lasing threshold of about one micro-watt and high spontaneous emission coupling factor of 0.25 and is comparable to the performance of conventional semiconductor lasers.

#Hardware & Devices;#Laser
Field # Hardware & Devices
Updated 29 June 2020

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Description Transforming the light-converting chips into a platform for software - essentially akin to the PlayStation Plus video games service - amounts to a sea change for the $10 billion business, which built its dominance through hardware breakthroughs.

#Hardware & Devices
Field # Hardware & Devices
Updated 29 June 2020