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
Leiderer, Paul
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Schmotz, Markus;Maier, Judith;Leiderer, Paul

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二极管是一种阻止一个方向的流动,但让它通过另一个方向的元件。二极管最突出的实现是电子整流器。在本文中,我们展示了一个热二极管的基础上,标准的硅加工技术,利用整流的声子输运。我们使用最近开发的检测方法,直接可视化的热流通过这样的设备制造在一个薄的硅膜。该二极管由一系列不同形状的孔组成,这些孔通过聚焦离子束加工而被铣削到膜中。在我们的实验中,我们在150 K的温度下获得了1.7的热流整流比。
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.