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Researchers demonstrate new sensors by creating novel health monitoring, machine interface devices

Researchers at North Carolina State University have developed a highly sensitive and stretchable strain sensor that can detect minor changes in strain with great range of motion. The sensor's innovative design features a patterned cut network that enables it to withstand significant deformation without sacrificing sensitivity.

SourceNorth Carolina State University·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateJan 3, 2023

POSTECH develops thermally evaporated environment-friendly semiconductors

Researchers at POSTECH developed high-performance n-type semiconductor Bi2S3 and p-type Te semiconductor through thermal evaporation, reducing energy consumption and environmental impact. This method can be integrated into standard OLED manufacturing, lowering production costs and contributing to the growth of sustainable electronics.

SourcePohang University of Science & Technology (POSTECH)·JournalNature Communications·DateDec 21, 2022

Bifunctional flexible electrochromic supercapacitors were successfully fabricated

Researchers have successfully fabricated bifunctional flexible electrochromic supercapacitors using silver nanowire flexible transparent electrodes. The devices can exhibit color changes to display energy status, offering potential for smart windows and wearable electronics. With excellent stability and high areal capacitance, these fl...

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateDec 13, 2022

Graphene scientists firstly manufactured a difunctional composite for high-performance Li-S batteries under extremely low temperatures

Researchers developed a novel separator using graphene oxide, acetylene black and polypropylene to suppress lithium polysulfide dissolution and improve lithium-ion transportation. The new separator enables efficient Li-S batteries with better performance and stability.

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateDec 8, 2022

Teaching photonic chips to learn

A research team developed an optical chip that can train machine learning hardware, improving AI performance and reducing energy consumption. This innovation uses photonic tensor cores and electronic-photonic application-specific integrated circuits to speed up the training step in machine learning systems.

SourceGeorge Washington University·JournalOptica·DateNov 22, 2022

Stretchable battery packaging with moisture and gas barrier could power the future of wearable devices

Researchers from Yokohama National University have developed a flexible film for batteries that can operate reliably in air, offering potential for highly deformable batteries in wearable devices. The film shows excellent oxygen gas impermeability and extremely low moisture permeability, making it suitable for wearable applications.

SourceYokohama National University·JournalACS Applied Materials & Interfaces·DateOct 31, 2022

Disposable electronics on a simple sheet of paper

Scientists have developed a prototype circuit board made of a sheet of paper with fully integrated electrical components, making it easy to dispose of responsibly. The new design uses wax and ink to print channels, conductive inks, and metal components onto the paper, creating a flexible and thin device that can be burned or degraded.

SourceAmerican Chemical Society·JournalACS Applied Materials & Interfaces·DateOct 6, 2022

Artificial intelligence tools quickly detect signs of injection drug use in patients’ health records

Researchers developed an AI tool using natural language processing and machine learning to identify people who inject drugs in electronic health records. The model accurately identified PWIDs in 1,000 records from 2003-2014, significantly improving clinical decision making and resource allocation.

SourceUniversity of California - Los Angeles Health Sciences·JournalOpen Forum Infectious Diseases·TypeData/statistical analysis·DateSep 21, 2022

Robo-bug: a rechargeable, remote-controllable cyborg cockroach

Researchers created a rechargeable, remote-controlled cyborg cockroach with an ultrathin organic solar cell module powered by a lithium polymer battery. The device allows for wireless control of leg segments, enabling long-term operation without recharging.

SourceRIKEN·Journalnpj Flexible Electronics·TypeExperimental study·DateSep 5, 2022

CT-derived body composition with deep learning predicts cardiovascular events

A large retrospective study found that visceral fat area from fully automated and normalized abdominal CT analysis predicts subsequent myocardial infarction or stroke in Black and White patients. The study suggests that body composition analysis using machine learning could be widely adopted to add prognostic utility to clinical practice.

SourceAmerican Roentgen Ray Society·JournalAmerican Journal of Roentgenology·TypeImaging analysis·DateAug 31, 2022

Gwangju Institute of Science and Technology scientists improve the power output of triboelectric nanogenerators with carbon particles

Researchers at Gwangju Institute of Science and Technology improve triboelectric nanogenerators by using mesoporous carbon spheres to enhance charge transport and surface charge densities. The device achieves a 1300-fold higher output current, enabling potential sustainable energy harvesting.

SourceGIST (Gwangju Institute of Science and Technology)·JournalSmall Methods·TypeExperimental study·DateAug 9, 2022

A golden ticket to smaller electronics

A team of researchers at Osaka University developed a new method for direct three-dimensional bonding of copper electrodes using silver, enabling reliable connections at low temperatures without external pressure. The process can be performed under gentle conditions, resulting in permanent connections as small as 20 micrometers.

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

Diamonds are for quantum sensing

A team of researchers at the University of Tsukuba has developed a new method for measuring tiny changes in magnetic fields using nitrogen-vacancy defects in diamonds. This breakthrough could lead to more accurate quantum sensors and spintronic computers, enabling precise monitoring of temperature, magnetic, and electric fields.

SourceUniversity of Tsukuba·JournalAPL Photonics·DateJun 16, 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

‘Fruitcake’ structure observed in organic polymers

An international team of researchers has observed a unique 'fruitcake' structure in an organic polymer, revealing variations in hardness at the nanoscale. This discovery could lead to the development of next-generation microelectronic and bioelectronic devices with improved flexibility and biocompatibility.

SourceUniversity of Cambridge·JournalNature Communications·TypeExperimental study·DateJun 2, 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

Controlling heat flow in a solid by switching crystal structure dimensionality

Scientists have created a material that can reversibly switch between high and low thermal conductivity by changing its crystal structure dimensionality, opening up new possibilities for thermal management. The material's ability to alter its thermal conductivity allows for more efficient heat flow control.

SourceTokyo Institute of Technology·JournalAdvanced Electronic Materials·TypeExperimental study·DateApr 25, 2022

Chatbots deployed in response to COVID-19 pandemic

Researchers analyzed 61 COVID-specific chatbots in 30 countries, finding common uses such as risk assessment, symptom data collection, and appointment scheduling. They also discovered that anonymity of user interactions varies across cultures, affecting the effectiveness of follow-up services.

SourceUniversity of Georgia·JournalJournal of the American Medical Informatics Association·DateApr 5, 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...

Active video games provide alternative workout

A study from the University of Georgia shows that exergaming can increase satisfaction and autonomy in exercise, leading to increased physical activity and motivation. The research followed participants who were randomly assigned to either exergame or traditional aerobics classes for six weeks.

SourceUniversity of Georgia·JournalInternational Journal of Sport and Exercise Psychology·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