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期刊论文

Temperature measurement using a gallium-filled carbon nanotube nanothermometer

高义华Yihua Gao Yoshio Bando Zongwen Liu and Dmitri Golberg Haruyuki Nakanishi

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摘要/描述

We report here temperature measurement by means of a Ga-filled C nanotube thermometer with diameter,150 nm and length; 12mm. The method relies on the initial identification and calibration of a nanothermometer in a transmission electron microscope TEM, followed by placing it into an air-filled furnace whose temperature is to be measured, and final TEM reading of a postmeasurement gradation mark visible inside the tubular channel. The mark originates from the fact that, at high temperature, the Ga column tip exposed to the air through the open C nanotube end oxidizes, and a thin Ga oxide layer sticks to the nanotube walls upon cooling. The temperature according to this gradation mark coincides closely with nominal furnace temperature controlled by standard means. The method paves the way for practical temperature measurements using a C nanothermometer in air and within spatially localized regions e.g., dimensions of tens of micrometers.

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版权说明:以下全部内容由高义华上传于   2009年12月03日 21时20分47秒,版权归本人所有。

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