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Japan Advanced Institute of Science and Technology


Smart optimization paves the way for improved silicon solar cell performance

A team of researchers from Japan Advanced Institute of Science and Technology has developed an innovative Bayesian optimization scheme to optimize the performance of silicon heterojunction solar cells. The approach, known as constrained BO, combines three prediction models to determine optimal deposition conditions for catalytic chemic...

SourceJapan Advanced Institute of Science and Technology·JournalACS Applied Materials & Interfaces·DateMar 5, 2024

Towards next-generation nanocatalysts to revolutionize active electron transfer

Researchers from Japan Advanced Institute of Science and Technology have developed a copolymer-conjugated nanocatalytic system to enhance active electron transfer for increased photoinduced hydrogen generation. The system leverages the advantages of a stimuli-responsive polymer chain to achieve dynamic electron transfer.

SourceJapan Advanced Institute of Science and Technology·JournalChemical Communications·DateDec 13, 2023

Developing novel tools for applications of argumentation to behavioral economics

The researchers developed a Revealed Preference Argumentation framework and an Integrated Preference Argumentation framework, which unify two main approaches to RPT. They also created comprehensive algorithms for IPA frameworks and tested the tool on RPT-based consumer behavior analysis.

SourceJapan Advanced Institute of Science and Technology·JournalInternational Journal of Approximate Reasoning·DateMay 22, 2023

Walking on familiar streets: insights on how neighborhood attachment may promote people's walking behavior

A new study found that neighborhood attachment is positively associated with people's walking behavior and physical activity. Place attachment, a person's emotional and functional relationship with their surroundings, influences the likelihood of engaging in outdoor activities like walking.

SourceJapan Advanced Institute of Science and Technology·JournalLandscape and Urban Planning·DateApr 18, 2023

New machine-learning approach enables to identify one molecule in a billion molecules selectively with graphene sensors

Researchers developed a machine learning model that maps graphene-gas molecule van der Waals complex bonding evolution for selective gas detection. The model achieved 100% accuracy in distinguishing between different atmospheric environments, showcasing its potential for environmental monitoring and non-invasive medical diagnosis.

SourceJapan Advanced Institute of Science and Technology·JournalSensors and Actuators B Chemical·DateMar 17, 2023

Speeding up extreme fast charging capability in lithium-ion batteries

A team of Japanese researchers has developed a novel approach to enhance the fast-charging ability of lithium-ion batteries using a binder material that promotes Li-ion intercalation of active material. This results in high conductivity, low impedance, and good stability, reducing the concentration polarization of Li+ ions.

SourceJapan Advanced Institute of Science and Technology·JournalACS Materials Letters·DateMar 3, 2023

Moderate and intense physical activity favors good sleep

A recent study conducted in Japan found that moderate and intense physical activity favors good sleep in middle-aged Japanese women. The research used an isotemporal substitution approach and replaced sedentary behavior with moderate-to-vigorous physical activity, resulting in improved sleep quality. Interestingly, this association was...

Research in Japan suggests using built environment design to fight depression

A study published in Landscape and Urban Planning found that improved perceptions of neighborhood walkability and enhanced access to public transport and safety from crime reduce depressive symptoms. The researchers suggest building environment design may influence mental health through behavioral and social pathways.

SourceJapan Advanced Institute of Science and Technology·JournalLandscape and Urban Planning·DateDec 19, 2022

Stabilizing lithium-ion batteries with microbially synthesized electrolyte additive

Researchers from Japan Advanced Institute of Science and Technology have developed a sustainable, eco-friendly compound to stabilize high-energy density lithium-ion batteries. The microbially synthesized pyrazine diamine compound significantly improves battery performance, reducing degradation and increasing operating potential.

High-temperature superconductivity in lanthanum, yttrium, and cerium ternary hydrides

A team of researchers from Japan Advanced Institute of Science and Technology has discovered thermodynamically stable phases in Y–Ce–H and La–Ce–H systems that exhibit high-temperature superconductivity. Calculations predicted Tc values of up to 173 K, paving the way for the development of more energy-efficient and sustainable societies.

SourceJapan Advanced Institute of Science and Technology·JournalMaterials Today Physics·DateNov 16, 2022

Being a couch potato is risky business: Causes and remedies of sedentary behavior in children

A recent study found that sedentary behavior in children is linked to elevated cholesterol, blood pressure, and cardiovascular problems. The study identified key correlates, including parental characteristics, household environment, and school environment, suggesting that educating parents and designing safe outdoor environments can he...

Structural determination of complex anion materials by an interdisciplinary approach

A team of researchers from Japan Advanced Institute of Science and Technology developed an analytical tool to investigate the ordering of fluorine in lead titanium oxyfluoride. They used first-principles calculation to analyze experimental results and determined the element substitution positions, finding that fluorine atoms predominan...

Amping up battery performance with black glasses grafted on micron silicon

Researchers at Japan Advanced Institute of Science and Technology have developed a novel anode material consisting of black glasses grafted silicon microparticles, which shows great promise in enhancing lithium-ion battery performance and energy storage. The material exhibits high lithium diffusion ability, reduced internal resistance,...

SourceJapan Advanced Institute of Science and Technology·JournalJournal of Materials Chemistry A·DateAug 7, 2022

Charging a green future: Latest advancement in lithium-ion batteries could make them ubiquitous

Researchers have developed a polymer composite binder that improves the performance of silicon anodes in lithium-ion batteries. The binder, consisting of P-BIAN and PAA polymers, stabilizes the silicon particles and maintains a thin solid-electrolyte interface layer, resulting in improved discharge capacity and structural integrity.

SourceJapan Advanced Institute of Science and Technology·JournalACS Applied Energy Materials·DateMay 19, 2022

Predicting the most stable boron nitride structure with quantum simulations

A team of researchers has provided evidence to settle the debate on the relative stabilities of boron nitride's structures using a state-of-the-art quantum simulation method. The study found that hexagonal boron nitride (hBN) is the most stable structure, followed by rhombohedral (rBN), zinc-blende (cBN), and wurtzite (wBN).

SourceJapan Advanced Institute of Science and Technology·JournalThe Journal of Physical Chemistry C·DateApr 14, 2022

Physiological signals could be the key to “Emotionally Intelligent” AI, scientists say

Researchers integrated biological signals with gold-standard machine learning methods to create emotionally intelligent speech dialog systems. The study found that combining language information with biological signal information improved the AI's performance, making it comparable to human-like emotional recognition.

SourceJapan Advanced Institute of Science and Technology·JournalIEEE Transactions on Affective Computing·DateMar 31, 2022

Carbon molecular sieve integrated graphene sensor: New paradigm in atmospheric gas sensing and molecular identification

A new paradigm in atmospheric gas sensing has been achieved using a graphene sensor integrated with carbon molecular sieve functionality. The sensor demonstrates selective gas detection, including ammonia, at room temperature with a fast response time of seconds.

SourceJapan Advanced Institute of Science and Technology·JournalACS Applied Materials & Interfaces·DateMar 17, 2022

Increasing the accuracy of atomic force calculations with the space-warp coordinate transformation

Researchers developed a space-warp coordinate transformation (SWCT) method to accurately calculate atomic forces for elements with high atomic numbers. The study used quantum Monte Carlo simulations and found that the SWCT method reduces computational costs, resulting in more accurate calculations.

SourceJapan Advanced Institute of Science and Technology·JournalThe Journal of Chemical Physics·DateFeb 6, 2022

Supercomputer and quantum simulations solve a difficult problem of materials science

A Japanese research team successfully estimated the bending energy of disiloxane molecules with state-of-the-art quantum Monte Carlo method, overcoming previous simulation challenges. The method's self-healing property reduced basis-set dependence and bias, enabling accurate results without dependence on parameter choices.

SourceJapan Advanced Institute of Science and Technology·JournalPhysical Chemistry Chemical Physics·DateFeb 4, 2022