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Magnetic superstructures resonate with global 6G developers

Researchers at Osaka Metropolitan University observed unprecedented collective resonance motion in chiral helimagnets, allowing a significant increase in current frequency bands. This phenomenon enables a boost in frequencies beyond 100 GHz with relatively weak magnetic fields, making these materials promising for 6G technology.

SourceOsaka Metropolitan University·JournalPhysical Review Letters·TypeExperimental study·DateJun 21, 2022

Let machines do the work: Automating semiconductor research with machine learning

Researchers use machine learning to automatically analyze Reflection High-Energy Electron Diffraction (RHEED) data, enabling faster and more efficient discovery of new materials. The study focused on surface superstructures in thin-film silicon surfaces and identified optimal synthesis conditions using non-negative matrix factorization.

SourceTokyo University of Science·JournalScience and Technology of Advanced Materials Methods·TypeExperimental study·DateJun 16, 2022

Towards indoor lighting-powered thin-film, flexible solar cells with piezophototronics

Ritsumeikan University researchers create a novel thin-film flexible piezoelectric-photovoltaic device that can generate electricity from indoor lighting. The device's performance is improved through strain-induced polarization in the ZnMgO layer, increasing open-circuit voltage and overcoming charge recombination issues.

SourceRitsumeikan University·JournalNano Energy·TypeExperimental study·DateJun 8, 2022

Component for brain-inspired computing

Researchers at ETH Zurich have developed a novel memristor design that can switch between two operation modes, enabling greater efficiency in machine learning applications. This breakthrough component is made of halide perovskite nanocrystals and simulates complex neural networks with high accuracy.

SourceETH Zurich·JournalNature Communications·DateMay 18, 2022

Eavesdroppers can hack 6G frequency with DIY metasurface

Researchers from Rice University and Brown University demonstrate a DIY method to hack 6G frequency using office paper, inkjet printer, metallic foil transfer, and laminator. The 'metasurface-in-the-middle' attack can redirect part of a high-frequency transmission between two users, threatening the security of next-gen wireless networks.

SourceRice University·TypeExperimental study·DateMay 16, 2022

Researchers at the GIST uncover the key to safer energy storage devices

The study reveals significant information on the thermal properties of electric double-layer capacitors, which can help create safer and more reliable energy storage devices. The research team found that charging and discharging alter the heat capacity of EDLCs, leading to a decrease in capacitance.

SourceGIST (Gwangju Institute of Science and Technology)·JournalInternational Journal of Heat and Mass Transfer·TypeExperimental study·DateMay 9, 2022

UC researchers looking for the Goldilocks of exosuits

Researchers at the University of Cincinnati are searching for the ideal exosuit design to reduce muscle load and prevent work-related musculoskeletal disorders. The study found that commercially available exosuits have limitations, with the Auxivo LiftSuit being stiff and uncomfortable during prolonged wear.

SourceUniversity of Cincinnati·JournalApplied Ergonomics·TypeSystematic review·DateApr 26, 2022

Quantum physics sets a speed limit to electronics

Researchers investigated the shortest possible time scale of optoelectronic phenomena and found that it cannot be increased beyond one petahertz. The experiments used ultra-short laser pulses to create free charge carriers in materials, which were then moved by a second pulse to generate an electric current.

SourceVienna University of Technology·JournalNature Communications·TypeComputational simulation/modeling·DateMar 25, 2022

Simply printing high-performance perovskite-based transistors

A research team from POSTECH has developed a method to print high-performance p-type semiconductor transistors using inorganic metal halide perovskite, exhibiting high hole mobility and current ratio. This technology enables solution-processed perovskite transistors to be simply printed as semiconductor-like circuits, paving the way fo...

The opto-ionic effect: Light may increase performance of fuel cells and lithium-ion batteries

Researchers have discovered the opto-ionic effect, where light increases the mobility of ions in ceramic materials, improving the performance of devices such as solid-state electrolytes in fuel cells and lithium-ion batteries. This effect could lead to higher charging speeds and more efficient energy conversion technologies.

SourceTechnical University of Munich (TUM)·JournalNature Materials·TypeExperimental study·DateMar 22, 2022

Record-breaking, ultrafast devices step to protecting the grid from EMPs

Scientists at Sandia National Laboratories have developed a tiny device that can shunt excess electricity in a few billionths of a second, protecting the nation's electric grid from electromagnetic pulses. The diode operates at a record-breaking 6,400 volts and has potential to operate up to 20,000 volts.

SourceDOE/Sandia National Laboratories·JournalIEEE Transactions on Electron Devices·TypeExperimental study·DateMar 15, 2022

Disaggregate and rule: Optimizing power consumption estimation in commercial buildings

Researchers propose a disaggregation strategy to estimate power consumption of individual electrical facilities, improving accuracy over traditional methods. The new approach uses linear regression residuals and clustered daily routines to provide more accurate estimations for workdays and holidays.

SourceTokyo University of Science·JournalEnergy and Buildings·TypeComputational simulation/modeling·DateFeb 28, 2022

Researchers from the GIST use artificial intelligence to identify potential unsafe locations in cities

GIST researchers propose a new strategy for crime prevention using artificial intelligence, trained on a large-scale dataset of deviant incident reports and corresponding images. The model, called DevianceNet, can accurately classify and detect deviant places, making it a useful tool in urban safety development.

SourceGIST (Gwangju Institute of Science and Technology)·TypeComputational simulation/modeling·DateFeb 23, 2022

Time crystals leave the lab

Researchers at University of California - Riverside observe time crystals in a system not isolated from its environment, achieving a major breakthrough. The all-optical time crystal uses a disk-shaped magnesium fluoride glass resonator and has potential applications in accurate measurements and precision timekeeping.

SourceUniversity of California - Riverside·JournalNature Communications·TypeExperimental study·DateFeb 14, 2022

NYU Tandon professor examines the issue of battery recyclability

A new study by NYU Tandon professor Nikhil Gupta explores the recyclability of lithium-ion and lead-acid batteries, highlighting the need for a circular economy approach. While lead acid batteries have a high recycling efficiency, lithium-ion batteries pose significant challenges due to their rapidly evolving chemistry and cell design.

SourceNYU Tandon School of Engineering·JournalJournal of the Indian Institute of Science·TypeSurvey·DateFeb 1, 2022

New sensor grids record human brain signals in record-breaking resolution

The new sensor grids offer 100 times higher resolution than existing technology, allowing for more precise identification of seizure origins and preservation of healthy brain tissue. Longer term, the technology holds potential for permanent implantation to improve life quality for people with paralysis or neurodegenerative diseases.

SourceUniversity of California - San Diego·JournalScience Translational Medicine·TypeExperimental study·DateJan 19, 2022

Groundbreaking research produces record levels of strain in single-crystal silicon, which could lead to phones with smoke detector technology

The University of Surrey researchers have developed a method to generate up to 3.1% biaxial strain and 8.5% uniaxial strain in single-crystal silicon using ion implantation, which could lead to the development of germanium lasers and near-infrared sensors for smartphones.

SourceUniversity of Surrey·JournalPhysical Review Materials·TypeExperimental study·DateJan 18, 2022

Edge processing research takes Surrey discovery closer to use in artificial intelligence networks

Researchers at the University of Surrey have successfully demonstrated the use of multimodal transistors in artificial neural networks, achieving practically identical classification accuracy as pure ReLU implementations. The study paves the way for thin-film decision and classification circuits, which could be used in more complex AI ...

SourceUniversity of Surrey·JournalScientific Reports·TypeComputational simulation/modeling·DateJan 17, 2022

A new microscope

Researchers have developed a new two-photon microscope that provides subcellular resolution of multiple brain regions, enabling monitoring of neural circuitry in mammals. The microscope has the largest field of view and imaging speed to capture changes in neuron activity during behavior.

SourceUniversity of California - Santa Barbara·JournalNature Communications·DateDec 2, 2021

On-water creation of conducting MOF nanosheets

Scientists at Osaka Prefecture University developed a novel method for creating uniform, electrically conductive nanosheets using oil and water interfaces. The approach resulted in highly organized three-dimensional nanostructures with high electrical conductivity, offering potential applications in energy devices and sensors.

SourceOsaka Prefecture University·JournalACS Applied Materials & Interfaces·TypeNews article·DateOct 28, 2021

New solution for low cost, light-weight and compact wireless transfer devices

Researchers at Kobe University have developed a novel power control system for wireless power transfer, enabling precise and efficient energy transfer while reducing circuit components and costs. The system uses resonant frequency tracking and load impedance regulation to minimize power losses.

SourceKobe University·JournalIEEE Journal of Emerging and Selected Topics in Industrial Electronics·TypeExperimental study·DateOct 18, 2021