Researchers have shown theoretically that, in highly ordered materials, heat can flow toward warmer regions without violating the laws of thermodynamics. Their work could help design electronics that ...

Fourier's well-known heat equation, introduced in 1822, describes how temperature changes in space and time when heat flows through a material. In general, this formulation works well to describe heat ...

Controlling heat flow is a major challenge for many technologies. In electronic and photonic devices, for example, heat ...

Controlling the flow Vortex-induced heat backflow (top) in a simulated 2D graphite strip, compared with conventional heat flow (bottom). (Courtesy: 2026 THEOS EPFL CC BY SA) We are all familiar with ...

Ultrathin 2D semiconductors show strongly impeded thermal diffusion at room temperature, opening new routes for device heat management. (Nanowerk News) Controlling heat flow is a major challenge for ...

To understand how heat normally flows, you could study the second law of thermodynamics – or wrap your hands around a hot mug of coffee. Both tell us that heat tends to flow toward cooler regions. As ...

The new equations explain why and under which conditions heat propagation can become fluid-like, rather than diffusive. Credit: Michele Simoncelli, EPFL The new equations explain why and under which ...