A thermal diode using phonon rectification
A thermal diode using phonon rectification
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DOI:
10.1088/1367-2630/13/11/113027
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发表时间:
2011-11-18
影响因子:
3.3
通讯作者:
Leiderer, Paul
中科院分区:
文献类型:
--
作者:
Schmotz, Markus;Maier, Judith;Leiderer, Paul
A diode is an element blocking flow in one direction, but letting it pass in the other. The most prominent realization of a diode is an electrical rectifier. In this paper, we demonstrate a thermal diode based on standard silicon processing technology using rectification of phonon transport. We use a recently developed detection method to directly visualize the heat flow through such a device fabricated in a thin silicon membrane. The diode consists of an array of differently shaped holes milled into the membrane by focused ion beam processing. In our experiment, we achieve a rectification ratio of the heat current of 1.7 at a temperature of 150 K.