thermal conductivity tagged posts

Scientists have found the secret behind a property of solid materials known as ferroelectrics, showing that quasiparticles moving in wave-like patterns among vibrating atoms carry enough heat to turn the material into a thermal switch when an electrical field is applied externally.

A key finding of the study is that this control of thermal conductivity is attributable to the structure of the material rather than any random collisions among atoms...

A collaborative research team, led by the University of Liverpool, has discovered a new inorganic material with the lowest thermal conductivity ever reported. This discovery paves the way for the development of new thermoelectric materials that will be critical for a sustainable society.

Reported in the journal Science, this discovery represents a breakthrough in the control of heat flow at the atomic scale, achieved by materials design. It offers fundamental new insights into the management of energy. The new understanding will accelerate the development of new materials for converting waste heat to power and for the efficient use of fuels.

The research team, led by Professor Matt Rosseinsky at the University’s Department of Chemistry and Materials Innovation Factory and Dr...

Berkeley Lab researchers have experimentally confirmed strong in-plane anisotropy in thermal conductivity along the zigzag (ZZ) and armchair (AC) directions of single-crystal black phosphorous nanoribbons. Credit: Junqiao Wu, Berkeley Lab

Researchers have confirmed single-crystal black phosphorous nanoribbons display a strong in-plane anisotropy in thermal conductivity, up to a factor of 2, along the zigzag and armchair directions of single-crystal black phosphorus nanoribbons. An experimental revelation that should facilitate the future application of this highly promising material to electronic, optoelectronic and thermoelectric devices.

“Imagine the lattice of black phosphorus as a 2D network of balls connected with springs, in which the network is softer along one direction of the plan...