Jaehun Chung, Kyeongtae Kim, Gwangseok Hwang, Ohmyoung Kwon, Seungwon Jung, Junghoon Lee, Jae Woo Lee, Gyu Tae Kim, "Quantitative temperature measurement of an electrically heated carbon nanotube using the null-point method". Review of Scientific Instruments 2010, 81 (11). >> Published 2010-11-01
Abstract
Previously, we introduced the double scan technique, which enables quantitative temperature profiling with a scanning thermal microscope (SThM) without distortion arising from heat transfer through the air. However, if the tip-sample thermal conductance is disturbed due to the extremely small size of the sample, such as carbon nanotubes, or an abrupt change in the topography, then quantitative measurement becomes difficult even with the double scan technique. Here, we developed the null-point method by which one can quantitatively measure the temperature of a sample without disturbances arising from the tip-sample thermal conductance, based on the principle of the double scan technique. We first checked the effectiveness and accuracy of the null-point method using 5 μm and 400 nm wide aluminum lines. Then, we quantitatively measured the temperature of electrically heated multiwall carbon nanotubes using the null-point method. Since the null-point method has an extremely high spatial resolution of SThM and is free from disturbance due to the tip-sample thermal contact resistance, and distortion due to heat transfer through the air, the method is expected to be widely applicable for the thermal characterization of many nanomaterials and nanodevices.
Link : http://rsi.aip.org/resource/1/rsinak/v81/i11/p114901_s1
http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=RSINAK000081000011114901000001&idtype=cvips&doi=10.1063/1.3499504&prog=normal
email : omkwon@korea.ac.kr
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Quantitative temperature measurement of an electrically heated carbon nanotube using the null-point method
Rev. Sci. Instrum. 81, 114901 (2010); doi:10.1063/1.3499504 (5 pages)
Jaehun Chung1, Kyeongtae Kim1, Gwangseok Hwang1, Ohmyoung Kwon1, Seungwon Jung2, Junghoon Lee2, Jae Woo Lee3, and Gyu Tae Kim3
1Department of Mechanical Engineering, Korea University, Seoul 136-701, Republic of Korea
2School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151–744, Republic of Korea
3School of Electrical Engineering, Korea University, Seoul 136-701, Republic of Korea
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기계과 권오명 교수님 연구실과 같이 일한 결과물이 논문으로 나오게 되었습니다.
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