The quantum of thermal conductance, G Q = πk B 2 T/6ℏ, provides the fundamental upper limit for heat conduction through a single channel 8,9. Here, T is the temperature, k B denotes the Boltzmann ...

image: Figure 1. Left: Photo of the TDYNO target deployed at the National Ignition Facility through the Discovery Science program. The experimental target consists of two foils and a pair of grids, ...

In most conventional semiconductors, thermal conductivity decreases as temperature rises because heat-carrying lattice vibrations—called phonons—scatter more frequently.

After a decade of work, Issam Mudawar will soon see the results of the largest phase change experiment ever conducted in space. WEST LAFAYETTE, Ind. — People who design spacecraft must prioritize two ...

(Nanowerk Spotlight) Being able to fabricate materials that allow a reversible tuning of their electrical and thermal properties near room temperature has many potential applications such as seasonal ...

Physicists in Finland have shown that it is possible to conduct heat over macroscopic distances at close to the maximum efficiency permitted by quantum mechanics. By directing photons along a ...

Combining state-of-the-art realistic atomistic modelling and experiments, the paper describes how thermal conductivity of ultrathin silicon membranes is controlled to large extent by the structure and ...

Technical ceramics are used in many applications where traditional materials such as steel or plastic are ineffective or unsuitable. For many of these applications, extreme hardness, wear resistance, ...

The particles of liquids are further apart than solids. This means that most liquids are poor conductors of heat because the frequency of collisions is reduced. The particles of gases are even further ...

The thermoelectric effect can turn waste heat into electrical energy. To make use of it, special materials with unusual properties are required. A remarkable effect has now been demonstrated, which ...