Effect of Nanoscale Structure on Thermal Contact Resistance of Carbon Nanotubes

2012 ◽  
Author(s):  
Yutaka Yamada ◽  
Takashi Nishiyama ◽  
Tatsuya Ikuta ◽  
Koji Takahashi
Keyword(s):  
Carbon Nanotubes ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Nanoscale Structure

Thermal Conductivity Measurement of Vertically Aligned Single-Walled Carbon Nanotubes Utilizing Temperature Dependence of Raman Scattering

2011 ◽  
Author(s):  
Kei Ishikawa ◽  
Shohei Chiashi ◽  
Saifullah Badar ◽  
Theerapol Thurakitseree ◽  
Takuma Hori ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Contact Resistance ◽  
Temperature Dependence ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Single Walled Carbon Nanotubes ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes ◽  
Swnt Film

We present a method for measuring the thermal conductivity and the thermal contact resistance between the film and the substrate of vertically-aligned single-walled carbon nanotubes (VA-SWNTs) grown on Si substrate by ACCVD (Alcohol Catalytic Chemical Vapor Deposition) method, utilizing temperature dependence of the Raman spectrum obtained from SWNTs. The method utilizes the excitation laser of the Raman system to heat the VA-SWNT film and measure the temperature simultaneously. The method finds the thermal conductivity of the VA-SWNT film to be around 1 Wm−1K−1 and the thermal contact resistance between the substrate and the film to be around 10−5∼10−6 m2KW−1. The obtained film thermal conductivity is converted into equivalent thermal conductivity of an individual SWNT, whose value is several tens of Wm−1K−1, and is more than an order of magnitude smaller than the reports on individual SWNTs.

Experimental Study on Thermal Contact Resistance of Multi-Walled Carbon Nanotubes

2013 ◽  
Author(s):  
Kazunari Tsuru ◽  
Yutaka Yamada ◽  
Tatsuya Ikuta ◽  
Takashi Nishiyama ◽  
Koji Takahashi
Keyword(s):  
Carbon Nanotubes ◽  
Contact Resistance ◽  
Room Temperature ◽  
Thermal Contact Resistance ◽  
Unit Area ◽  
Thermal Contact ◽  
Huge Impact ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Phonon Model

Heat transfer at solid-solid interface is very fascinating where no one knows the full mechanism which has a huge impact in many applications in engineering and science. In many kinds of interfaces, we treat a van der Waals contact of perfectly-smooth surfaces by using multi-walled carbon nanotubes (CNTs). Their thermal contact resistance (TCR) is estimated by comparing measured thermal conductivity of CNT specimen and numerical simulation result. The TCR per unit area is estimated as 1.58∼3.33×10−8 m2K/W at room temperature in vacuum, which is much higher than our previous result in air. It was also found that TCR is inversely proportional with the temperature to the 1.92th power different from the simple phonon model represented by the diffuse mismatch model.

Improvement of Thermal Contact Resistance by Carbon Nanotubes and Nanofibers

2004 ◽  
Vol 4 (8) ◽  
pp. 964-967 ◽  
Author(s):  
Helen F. Chuang ◽  
Sarah M. Cooper ◽  
M. Meyyappan ◽  
Brett A. Cruden
Keyword(s):  
Carbon Nanotubes ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact

THERMAL CONTACT RESISTANCE MATCHING TO OPTIMIZE PERFORMANCE IN THERMOELECTRIC GENERATORS

2020 ◽  
Vol 27 (7) ◽  
pp. 617-627
Author(s):  
Yuanyuan Tian ◽  
Mengjun Zhang ◽  
Junli Wang ◽  
Anbang Liu ◽  
Huaqing Xie ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Thermoelectric Generators
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