Thermal characterization of nanowire array in a-Al2O3 matrix

被引：0

作者：

Borca-Tasciuc, DA ^{[1
]}

Chen, G ^{[1
]}

Lin, YM ^{[1
]}

Rabin, O ^{[1
]}

Dresselhaus, MS ^{[1
]}

Borshchevsky, A ^{[1
]}

Fleurial, JP ^{[1
]}

Ryan, MA ^{[1
]}

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

NANOPHASE AND NANOCOMPOSITE MATERIALS IV | 2002年 / 703卷

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal properties characterization of Bi nanowires is critical in order to validate the predicted enhancement of their thermoelectric figure-of-merit. In this paper we report the effective thermal diffusivity of Bi nanowires array embedded in a-Al2O3 (alumina) template. The composite material consists of 85% alumina and approximately 15% Bi nanowires with a diameter of 40 nm and an average length of 40 pm. Measurements are performed along the nanowire axis. A thermal wave is produced at the front side of the sample and it is monitored at the backside through a fast thermoelectric effect. A one-dimensional heat conduction model is used to extract the thermal diffusivity.

引用

页码：65 / 70

页数：6

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