Thermal rectification in bulk materials with asymmetric shape

被引：106
作者：
Sawaki, D. [1 ]
Kobayashi, W. [2 ,3 ]
Moritomo, Y. [2 ]
Terasaki, I. [4 ]
机构：
[1] Waseda Univ, Dept Phys, Tokyo 1698555, Japan
[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Ibaraki 3058571, Japan
[3] Japan Sci & Technol Agcy, PRESTO, Saitama 3320012, Japan
[4] Nagoya Univ, Dept Phys, Aichi 4648602, Japan
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 08期
关键词：
RECTIFIER;
D O I：
10.1063/1.3559615
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate thermal rectification in a bulk material with a pyramid shape to elucidate shape dependence of the thermal rectification, and find that rectifying coefficient R is 1.35 for this shape, which is smaller than R=1.43 for a rectangular shape. This result is fully duplicated by our numerical calculation based on Fourier's law. We also apply this calculation to a given shape, and show a possible way to increase R depending on the shape. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3559615]
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页数：3
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