Current Thermal Conductivity News and Events

Current Thermal Conductivity News and Events, Thermal Conductivity News Articles.
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The magic angle of twisted graphene
Trapped tightly between two monolayers of carbon superimposed at a precise angle, electrons interact and can produce superconductivity. This is what UCLouvain's researchers reveal in an article published in Nature. This property allows electric power to circulate without any resistivity, without energy lost, within the nanostructure. (2021-02-23)

Fueling the future: Novel two-polymer membrane boosts hydrogen fuel cell performance
Fuel cells are an attractive sustainable energy source due to their eco-friendly by-product, water. However, existing fuel cells are either expensive or low performance. Now, scientists from Korea have designed a robust and highly conductive fuel cell ion-exchange membrane using two readily available polymer materials and a unique technique, opening doors to fuel cells that are both cheap and high performing, bringing us closer to realizing a hydrogen economy. (2021-02-17)

Tapping into waste heat for electricity by nanostructuring thermoelectric materials
Thermoelectric semiconductors can convert waste heat into useful electricity. However, obtaining lead-free semiconductors with high thermoelectric performance has proven to be difficult. Now, scientists from Chung-Ang University, Korea, have developed a novel strategy to produce tin telluride (SnTe) nanosheets directly from tin selenide nanosheets (SnSe), the latter of which are easier to fabricate. Their strategy paves the way for better nanostructuring in SnTe, which greatly enhances its thermoelectric properties. (2021-02-16)

Finding coronavirus's helper proteins
A group of scientists led by EMBL's Mikhail Savitski, Nassos Typas, and Pedro Beltrao, and collaborator Steeve Boulant at Heidelberg University Hospital, have analysed how the novel coronavirus affects proteins in human cells. They identified several human proteins as potential drug targets to prevent viral replication. (2021-02-16)

NREL heats up thermal energy storage with new solution meant to ease grid stress
Scientists from the National Renewable Energy Laboratory (NREL) have developed a simple way to better evaluate the potential of novel materials to store or release heat on demand in your home, office, or other building in a way that more efficiently manages the building's energy use. (2021-02-16)

Moiré patterns facilitate discovery of novel insulating phases
Materials having excess electrons are typically conductors. However, moiré patterns -- interference patterns that typically arise when one object with a repetitive pattern is placed over another with a similar pattern -- can suppress electrical conductivity, a study led by physicists at the University of California, Riverside, has found. (2021-02-15)

Researchers measure temperature effect of plasmon in chemical reactions using organic "sensors"
The researchers of TPU together with their colleagues from Russian and foreign scientific centers have found a way to estimate the temperature of a chemical reaction activated by pseudo-particles - plasmons. Two organic molecules served as ultra-small sensors or thermometers. (2021-02-15)

No new mountains formed during Earth's middle age, halting life's evolution for an eon
During the Proterozoic, Earth grew no taller - the tectonic processes that form mountains stalled, leaving continents devoid of high mountains for nearly 1 billion years, according to a new study. (2021-02-11)

Brazil: Air conditioning equipment days of use will double without climate action
Increasing demand for space cooling in Brazil will increase greenhouse gas emissions by 70-190% due to air conditioners, depending on how much we will mitigate climate change. A study carried out with the contribution of CMCC@Ca'Foscari explains the relationship between climate change, space cooling needs, and electricity demand in different regions of the country. (2021-02-10)

Physicists have optimized the method of smelting the MAX phase
Physicists from the Immanuel Kant Baltic Federal University in collaboration with their foreign colleagues have optimized the method for obtaining highly pure Cr2AlC MAX-phase, which is necessary for studying the magnetic properties of this compound when it is doped with manganese. The unique properties of magnetic MAX materials could be used in a wide range of new technologies from magnetic cooling to spintronics. (2021-02-10)

From trash to treasure: Silicon waste finds new use in Li-ion batteries
Researchers at Osaka University used Si swarf and ultrathin graphite sheets to fabricate Li-ion battery electrodes with high areal capacity and current density at a reduced cost. Increasing generation of Si swarf as industrial waste and potential use of the high-performance batteries in electronic vehicles will allow their work to contribute to reduced greenhouse gas emissions and the achievement of SDGs. (2021-02-09)

Efficiency limits of next-generation hybrid photovoltaic-thermal solar technology
Spectral-splitting hybrid photovoltaic-thermal (SSPVT) technology has emerged as a promising route toward high-performance solar harvesting. In this research, scientists have developed a comprehensive framework for modelling SSPVT solar collectors. The framework can be used to determine the efficiency limits of such collectors and to indicate how these limits can be approached through the selection of optimal designs and materials. This work promotes and provides guidance to the design, development and deployment of next-generation solar systems. (2021-02-08)

Radiative cooling and solar heating from one system, no electricity needed
A University at Buffalo-led study published Feb. 8 in the journal Cell Reports Physical Science describes a new technology that provides both radiative cooling and solar heating, all is one system and without using electricity or fuel. It could help impoverished communities, reduce cooling and heating costs, lower CO2 emissions (2021-02-08)

Ural Federal University scientists developed a new way of synthesis of high-purity zircon
A research group from Ural Federal University synthesized high-purity single-phase zircon (ZrSiO4) and analyzed its structural, thermal, vibrational and optical properties. The results have been published in the Journal of Solid State Chemistry (Q2) (2021-02-05)

A single-molecule guide to understanding chemical reactions better
Scientists at Tokyo Institute of Technology (Tokyo Tech) report measurement of electrical conductivity of single DNA molecules as a way of monitoring the formation of double-stranded DNA on a gold surface. In their latest paper, they investigate the time evolution of the reaction and report findings not observed previously, demonstrating the suitability of the single-molecule approach in elucidating reaction pathways and exploring novel chemical processes. (2021-02-04)

An optical coating like no other
The technology, based on Fano resonance, results in a coating that fully reflects only a very narrow wavelength. The technology could improve the effectiveness of devices that use hybrid thermal-electric power generation as a solar energy option. (2021-02-04)

Imaging technique provides link to innovative products
A study led by University of Georgia researchers announces the successful use of a new nanoimaging technique that will allow researchers to test and identify two-dimensional materials (2021-02-04)

NTU Singapore team develops portable device that creates 3D images of skin in 10 minutes
A team from Nanyang Technological University, Singapore (NTU Singapore) has developed a portable device that produces high-resolution 3D images of human skin within 10 minutes. (2021-02-02)

Increasing snow depth prevented wintertime soils from cooling during the warming hiatus
Scientists investigated snow cover along with other direct and indirect soil temperature influences in northeastern China. The research further showed that the increasing snow depth in northeastern China may be the main reason for the continued warming trend in soil temperatures. In addition to the thermal insulation effect of snow cover, the ability for soil to record human changes and environmental influences, or ''soil memory'' is also important, especially at greater depths. (2021-01-31)

Thick lithosphere casts doubt on plate tectonics in Venus's geologically recent past
A study of a giant impact crater on Venus suggests that its lithosphere was too thick to have had Earth-like plate tectonics, at least for much of the past billion years. (2021-01-28)

Ions in molten salts can go 'against the flow'
In a new article published in the scientific journal Communications Chemistry, a research group at Uppsala University show, using computer simulations, that ions do not always behave as expected. In their research on molten salts, they were able to see that, in some cases, the ions in the salt mixture they were studying affect one another so much that they may even move in the ''wrong'' direction - that is, towards an electrode with the same charge. (2021-01-27)

Beauty in imperfection: How crystal defects can help convert waste heat into electricity
Half-Heusler Ni-based alloys are thermoelectric materials with the potential for converting waste heat into electricity. However, the origin of their impressive conversion efficiency is not entirely clear. In a recent study, scientists from Japan and Turkey have attempted to uncover the role that Ni defects have in the crystal structure of these alloys and how their desirable thermoelectric properties are a consequence of small changes in strain around defective sites. (2021-01-26)

Scientists developed energy saving ceramic phosphors for high power LED systems
Materials scientists of Far Eastern Federal University (FEFU), in collaboration with an international research team, have advanced the design of composite ceramic materials (Ce3+:YAG-Al2O3), i.e. solid-state light converters (phosphors) that can be applied in ground and aerospace technologies. The LED systems based on the developed materials to save 20-30 percent more energy compared to commercial analogues. A related article was published in Materials Characterization. (2021-01-26)

Reef fish futures foretold
There are markedly different outcomes for different species of coral reef fishes under climate change - scientists are now another step closer to uncovering the 'winners and losers'. (2021-01-26)

Adding or subtracting single quanta of sound
Researchers perform experiments that can add or subtract a single quantum of sound--with surprising results when applied to noisy sound fields. (2021-01-25)

Ba7Nb4MoO20-based materials with high oxygen-ion conductivity opening sustainable future
Scientists at Tokyo Institute of Technology , Imperial and High Energy Accelerator Research Organization (KEK) Institute of Materials Structure Science, discover new Ba7Nb4MoO20-based materials with high oxygen-ion (oxide-ion O2-) conductivities--''the hexagonal perovskite-related oxides''--and shed light on the underlying mechanisms responsible for their conductivity. Their findings lead the way to uncovering other similar materials, furthering research on developing low-cost and scalable renewable energy technologies. (2021-01-25)

Healing ceramic electrolyte degraded by Li dendrite
Our research team has investigated the effect of post-annealing for healing Li garnet solid electrolyte degraded by the growth of Li dendrites. The ionic conductivity of the annealed solid electrolyte was slightly lower than that of the electrolyte before annealing but was retained above 10?4 S cm?1 at room temperature. The electrochemical results obtained indicate the possibility of reusing the solid electrolyte degraded by the growth of Li dendrites in another all-solid-state Li battery. (2021-01-18)

Newly developed GaN based MEMS resonator operates stably even at high temperature
JST PRESTO researcher developed a MEMS resonator that stably operates even under high temperatures by regulating the strain caused by the heat from gallium nitride (GaN). This device is small, highly sensitive and can be integrated with CMOS technology promising for the application to 5G communication, IoT timing device, on-vehicle applications, and advanced driver assistance system. (2021-01-15)

Nanodiamonds feel the heat
Scientists from Osaka University, The University of Queensland, and the Faculty of Engineering at the National University of Singapore have created polymer-coated nanodiamonds that can be absorbed into cells. Based on changes in their fluorescence properties, the internal thermal conductivity of the cell can be measured, which may lead to new heat treatments that attack cancer cells. (2021-01-15)

Conductive nature in crystal structures revealed at magnification of 10 million times
In groundbreaking materials research, a team led by University of Minnesota Professor K. Andre Mkhoyan has made a discovery that blends the best of two sought-after qualities for touchscreens and smart windows--transparency and conductivity. (2021-01-15)

Energy harvesting made possible with skin temperature
The Korea Institute of Science and Technology (KIST) announced that a collaborative research team led by Dr. Seungjun Chung from the Soft Hybrid Materials Research Center and Professor Yongtaek Hong from the Department of Electrical and Computer Engineering at Seoul National University (SNU) developed flexible thermoelectric devices with high power generation performance by maximizing flexibility and heat transfer efficiency. The research team also presented a mass-production plan through an automated process including a printing process. (2021-01-13)

Wetland methane cycling increased during ancient global warming event
Wetland methane cycling increased during a rapid global warming event 56 million years ago and could foreshadow changes the methane cycle will experience in the future, according to new research led by the University of Bristol. (2021-01-13)

iCeMS makes highly conductive antiperovskites with soft anion lattices
A new structural arrangement of atoms shows promise for developing safer batteries made with solid materials. Scientists at Kyoto University's Institute for Integrated Cell-Material Sciences (iCeMS) designed a new type of 'antiperovskite' that could help efforts to replace the flammable organic electrolytes currently used in lithium ion batteries. Their findings were described in the journal Nature Communications. (2021-01-12)

No disassembly required: Non-destructive method to measure carrier lifetime in SiC
To develop high-voltage devices made with silicon carbide (SiC), a common semiconducting material, it is necessary to understand its charge carrier lifetime distribution within thick layers. However, available carrier lifetime measurement methods involve the destruction of the sample. Fortunately, in a recent study at Nagoya Institute of Technology, Japan, scientists have developed a novel non-destructive technique with enhanced depth resolution, which will bolster the development of efficient SiC devices for power generation and distribution systems. (2021-01-12)

UCI scientists measure local vibrational modes at individual crystalline faults
Employing newly developed electron microscopy techniques, researchers at the University of California, Irvine and other institutions have, for the first time, measured the spectra of phonons - quantum mechanical vibrations in a lattice - at individual crystalline faults, and they discovered the propagation of phonons near the flaws. The team's findings are the subject of a study published recently in Nature. (2021-01-12)

Liquid metal ink liberates form
POSTECH-Yonsei University joint research team develops liquid metal ink for 3D circuit lines. (2021-01-10)

Research shows rising lizard temperatures may change predator-prey relationship with snakes
Researchers from the University of Hong Kong and Toho University have discovered that predation by snakes is pushing lizards to be active at warmer body temperatures on islands where snakes are present, in comparison to islands free from snakes. The findings show that lizard thermal biology is highly dependent on predation pressures and that body temperatures are rising suggest that such ectothermic predator-prey relationships may be changing under climatic warming. (2021-01-07)

It's getting hot in here: Warming world will fry power plant production in coming years
During the year's hottest months, many people rely on electricity-generated cooling systems to remain comfortable. But the power plants that keep air conditioners pushing out cold air could soon be in a vicious cycle in a warming world-not able to keep up with growing demands on hotter days and driving up greenhouse gas emissions to dangerous levels. (2021-01-06)

Mighty morphing 3D printing
Engineers at the University of Maryland have created a new shape-changing or ''morphing'' 3D printing nozzle, which offers researchers new means for 3D printing ''fiber-filled composites.'' (2021-01-06)

Putty-like composites of gallium metal with potential for real-world application
Researchers at the Institute for Basic Science (IBS) created a novel functional composite of gallium with putty or paste-like physical properties. The composite possesses excellent electromagnetic shielding properties as well as thermal conductivity. (2021-01-01)

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