Abstract
Solid-State Cooling Refrigeration relies on vapor compression that is noisy, takes up space, and is mechanically complex. Solid-state cooling requires changing an external field to drive cooling, but devices produced so far have not been efficient enough for practical applications. Ma et al. constructed a lightweight and flexible device using a thin electrocaloric polymer film, where toggling it in an electric field between a heat source and sink drives the cooling process (see the Perspective by Zhang and Zhang). The device rapidly cools down an overheated smartphone battery and has potential application for developing compact, low-profile electronics. Science , this issue p. [1130][1]; see also p. [1094][2] [1]: /lookup/doi/10.1126/science.aan5980 [2]: /lookup/doi/10.1126/science.aao2438
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