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  • Review Article
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Transforming heat transfer with thermal metamaterials and devices

Abstract

The demand for sophisticated tools and approaches in heat management and control has triggered the fast development of fields that include conductive thermal metamaterials, nanophononics, and far-field and near-field radiative thermal management. In this Review, we offer a unified perspective on the control of heat transfer, summarizing complementary paradigms towards the manipulation of physical parameters and the realization of unprecedented phenomena in heat transfer using artificial structures. The Review is divided into three parts that focus on the three main categories of heat flow control. Thermal conduction and radiation, at both the macroscale and microscale, are emphasized in the first and second parts. The third part discusses efforts to actively introduce heat sources or tune the material parameters with multiphysical effects in conduction, radiation and convection. We conclude by analysing the challenges in this research area and surveying new possible directions, in particular topological thermal effects, heat waves and quantum thermal effects.

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Fig. 1: Macroscopic approaches for manipulating heat conduction.
Fig. 2: Microscopic approaches to heat conduction.
Fig. 3: Far-field thermal radiation manipulation.
Fig. 4: Near-field thermal radiation manipulation.
Fig. 5: Multiphysical effects for heat transfer manipulation.

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Acknowledgements

C.-W.Q. acknowledges support from the Ministry of Education, Singapore (grant no. R-263-000-E19-114). W.L. and S.F. acknowledge support by the US Department of Energy (grant no. DE-FG02-07ER46426). W.L. acknowledges discussions with W. Jin and L. Fan.

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C.W., Y.L., B.L., W.L. and S.F. discussed the content of the Review. Y.L, W.L, T.H. and X.Z. wrote the Review. All authors reviewed and edited the manuscript before submission.

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Correspondence to Baowen Li, Shanhui Fan or Cheng-Wei Qiu.

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Li, Y., Li, W., Han, T. et al. Transforming heat transfer with thermal metamaterials and devices. Nat Rev Mater 6, 488–507 (2021). https://doi.org/10.1038/s41578-021-00283-2

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