Investigation of the Resistance Dependence on Temperature of Single Carbon Nanotube in Different Environments
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概要
- 論文の詳細を見る
We investigated the electrical resistance dependence on temperature of a single carbon nanotube (CNT) in vacuum, air, and water by heating the end of the CNT locally. The device used for investigation consisted of a microheater for local heating, four electrodes for measuring resistance on a silicon-on-insulator wafer, and a trench for further heat insulation. Then, the resistance of a single CNT assembled on the device was measured as a function of added heat quantity. The temperature coefficients of resistance of the CNT were 0.214\times 10^{-3}, 0.422\times 10^{-3}, and 0.735\times 10^{-3}/°C in vacuum, air, and water, respectively. Moreover, the heat quantities required to raise the temperature of a CNT in air and water are 1.2- and 1.3-fold that in vacuum, respectively. Thus, CNTs, mainly used as thermal sensors in vacuum, may also be suitable for use in air and water.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2011-12-25
著者
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Arai Fumihito
Department Of Bioengineering And Robotics Tohoku University
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Inomata Naoki
Department of Mechanical Systems and Design, Tohoku University, Sendai 980-8579, Japan
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