ArticleProceedings of the National Academy of Sciences of the United States of America2023
Giant, magnet-free, and room-temperature Hall-like heat transfer.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Topology in Thermal, Particle, and Plasma Diffusion Metamaterials.Chemical reviews · 2025Review
- Bioinspired energy-free temperature gradient regulator for significant enhancement of thermoelectric conversion efficiency.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Reconfigurable, zero-energy, and wide-temperature loss-assisted thermal nonreciprocal metamaterials.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
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5 authors.
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Abstract
Thermal chirality, generically referring to the handedness of heat flux, provides a significant possibility for modern heat control. It may be realized with the thermal Hall effect yet at the high cost of strong magnetic fields and extremely low temperatures. Here, we reveal magnet-free and room-temperature Hall-like heat transfer in an active thermal lattice composed of a stationary solid matrix and rotating solid particles. Rotation breaks the Onsager reciprocity relation and generates giant thermal chirality about two orders of magnitude larger than ever reported at the optimal rotation velocity. We further achieve anisotropic thermal chirality by breaking the rotation invariance of the active lattice, bringing effective thermal conductivity to a region unreachable by the thermal Hall effect. These results could enlighten topological and non-Hermitian heat transfer and efficient heat utilization in ways distinct from phonons.
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