Good news!
"New technology from University of Houston researchers could improve the way devices manage heat, thanks to a technique that allows heat to flow in only one direction. The innovation is known as thermal rectification ...
These concepts have so far only been demonstrated theoretically, but Zhao aims to build experimental platforms to show the innovation in action. ..."
"Key Takeaways
- UH researchers developed a way to make heat flow in only one direction, giving engineers new control over how devices manage temperature.
- The technology works like an electronic diode for heat, helping prevent overheating and potentially extending battery life in phones, electric vehicles and satellites.
- The approach could lead to cooler, safer and more reliable electronics, especially in extreme environments like space.
...
This new technology gives engineers a new way to control radiative heat with the same precision that electronic diodes control electrical currents, which means longer-lasting batteries for cell phones, electric vehicles and even satellites. It also has the potential to change our approach to AI data centers. ..."
From the abstract:
"As a type of energy carrier, polaritons can play a dominant role in the thermal conductivity of nano/microstructures.
Here, we report an asymmetric thermal conductivity mediated by polaritons that break the Lorentz reciprocity. In contrast to existing approaches that rely on nonlinearity or time modulation, we leverage nonreciprocal polaritons induced by magnetic effects.
We show that nonreciprocal surface plasmon polaritons in time-reversal symmetry-breaking systems, including magneto-optical materials and magnetic Weyl semimetals, can alter the symmetry of thermal conductivity in systems like thin films, resulting in direction-dependent thermal conductivity.
Thermal conductivities of reciprocal material systems can also be made asymmetric through near-field coupling with these material systems. In accompaniment with the surging interest in nonreciprocal thermal radiation by polaritons, we extend the role of nonreciprocal polaritons from radiative heat transfer systems to conduction systems, paving the way for next-generation thermal devices and efficient energy management solutions."
University of Houston Researchers Bring the Heat (original news release) "New Technology Promises to Improve Heat Regulation, Prolonging Battery Life"
Asymmetric thermal conductivity mediated by nonreciprocal polaritons (no public access)
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