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Chemically enhanced carbon nanotubes based Thermal Interface Materials

Daon, J. (author)
Thales Group,Centre national de la recherche scientifique (CNRS)
Sun, Shuangxi, 1986 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Jiang, Di, 1983 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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Leveugle, E. (author)
Thales Group
Galindo, C. (author)
Thales Group
Jus, S. (author)
Thales Group
Ziaei, A. (author)
Thales Group
Ye, L. (author)
Centre national de la recherche scientifique (CNRS)
Fu, Yifeng, 1984 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Liu, Johan, 1960 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Bai, J. (author)
Centre national de la recherche scientifique (CNRS)
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 (creator_code:org_t)
2015
2015
English.
In: THERMINIC 2015 - 21st International Workshop on Thermal Investigations of ICs and Systems 2015. - 9781467397056
  • Conference paper (peer-reviewed)
Abstract Subject headings
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  • With progress in microelectronics the component density on a device increases drastically. As a consequence the power density reaches levels that challenge device reliability. New heat dissipation strategies are needed to efficiently drain heat. Thermal Interface Materials (TIMs) are usually used to transfer heat across interfaces, for example between a device and its packaging. Vertically Aligned Carbon Nanotubes (VACNTs) can be used to play this role. Indeed, carbon nanotubes are among the best thermal conductors (similar to 3.000 W/mK) and in the form of VACNT mats, show interesting mechanical properties. On one side, VACNTs are in contact with their growth substrate and there is a low thermal resistance. On the other side, good contact must be created between the opposite substrate and the VACNTs in order to decrease the contact thermal resistance. A thin-film deposition of an amorphous material can be used to play this role. This paper reports a chemically enhanced carbon nanotube based TIM with creation of chemical bonds between the polymer and VACNTs. We show that these covalent bonds enhance the thermal transfer from VACNTs to a copper substrate and can dramatically decrease local resistances. Implementation processes and thermal characterizations of TIMs are studied and reported.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

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