Photoacoustic characterization of carbon nanotube array thermal interfaces

2007 ◽  
Vol 101 (5) ◽  
pp. 054313 ◽  
Author(s):  
Baratunde A. Cola ◽  
Jun Xu ◽  
Changrui Cheng ◽  
Xianfan Xu ◽  
Timothy S. Fisher ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Thermal Interfaces

Fabrication and characterization of carbon nanotube array electrodes with gold nanoparticle tips

2008 ◽  
Vol 133 (1) ◽  
pp. 208-212 ◽  
Author(s):  
YeoHeung Yun ◽  
Zhongyun Dong ◽  
Vesselin N. Shanov ◽  
Amos Doepke ◽  
William R. Heineman ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gold Nanoparticle ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Fabrication And Characterization

Carbon Nanotube Array Thermal Interfaces Enhanced With Paraffin Wax

2008 ◽  
Author(s):  
Baratunde A. Cola ◽  
Stephen L. Hodson ◽  
Xianfan Xu ◽  
Timothy S. Fisher
Keyword(s):  
Carbon Nanotube ◽  
Paraffin Wax ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Real Contact ◽  
Cnt Arrays ◽  
Sample Structure ◽  
Individual Cnts ◽  
Thermal Interfaces ◽  
Wax Coating

Vertically oriented carbon nanotube (CNT) arrays can increase real contact in thermal interfaces and efficiently transfer heat between the mating solids. In this study, a paraffin wax that changes phase at approximately 50°C was applied to interfaces with CNT arrays directly synthesized on one side of the interface, and to foil/CNT interfaces with CNT arrays directly synthesized on one side and both sides of the foil. The bulk thermal resistances of single-sided CNT array/wax interfaces were measured using a transient photoacoustic (PA) technique to range from approximately 2 to 3 mm2·K/W under moderate pressures. The bulk thermal resistances of foil/CNT/wax interfaces were measured with the PA technique to range from approximately 10 to 20 mm2·K/W under moderate pressures. For each sample structure, the addition of paraffin wax to the CNT arrays produced significant reductions in thermal resistance. We surmise that this improved thermal performance could be a function of the wettability of paraffin wax to CNTs. A hydrophilic wetting angle of approximately 47° was observed at the interface of liquid wax and the free tips of a CNT array at 60°C, and field-emission scanning electron microscope images taken after PA testing revealed individual CNTs that were blanketed with a wax coating.

scholarly journals Carbon Nanotube Array Thermal Interfaces for High-Temperature Silicon Carbide Devices

2008 ◽  
Vol 12 (3) ◽  
pp. 228-237 ◽  
Author(s):  
Baratunde A. Cola ◽  
Xianfan Xu ◽  
Timothy S. Fisher ◽  
Michael A. Capano ◽  
Placidus B. Amama
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Carbon Nanotube ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Thermal Interfaces
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