Evaluation of thermal conductivity of single carbon nanotubes in air and liquid using a fluorescence temperature sensor

We propose a method for evaluating thermal conductivity of a single carbon nanotube (CNT) using a fluorescent temperature sensor in liquid and air. The CNT is fixed to sensors by photofabrication. The electrode for Joule-heating of the CNT is fabricated on the sensor. Thermal conductivity of the CNT...

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Bibliographic Details
Published in:Applied physics letters 2013-10, Vol.103 (16)
Main Authors: Maruyama, H., Kariya, R., Arai, F.
Format: Article
Language:English
Subjects:
Carbon nanotubes
Electrodes
Heat transfer
Liquids
Mathematical analysis
Sensors
Temperature sensors
Thermal conductivity
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Summary:We propose a method for evaluating thermal conductivity of a single carbon nanotube (CNT) using a fluorescent temperature sensor in liquid and air. The CNT is fixed to sensors by photofabrication. The electrode for Joule-heating of the CNT is fabricated on the sensor. Thermal conductivity of the CNT is evaluated through the temperature difference between both ends of the CNT and the heat quantity input to the CNT. In this paper, we evaluated thermal conductivity of the same CNT in air and liquid. Calculated thermal conductivity of the CNT in air (667 ± 38 [W/m·K]) is higher than that of CNT in water (484 ± 72 [W/m·K]).
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4824757