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Findings from Tohoku University Broaden Understanding of Carbon Research (Improved thermal interface property of carbon nanotube-Cu composite based...

July 11, 2014



Findings from Tohoku University Broaden Understanding of Carbon Research (Improved thermal interface property of carbon nanotube-Cu composite based on supercritical fluid deposition)

By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Carbon Research. According to news reporting from Miyagi, Japan, by NewsRx journalists, research stated, "In this paper, we present a new synthesis method of carbon nanotubes (CNTs)-copper (Cu) composite on a silicon substrate using combination of supercritical fluid deposition (SCFD) and electrochemical plating (ECP) process. Deposition of a Cu layer onto CNTs is carried out under supercritical condition, and the CNTs-Cu composite with high-density Cu is synthesized by additional ECP process."

The news correspondents obtained a quote from the research from Tohoku University, "The Cu layer deposited by SCFD functions as a seed layer for ECP, and spaces between neighboring CNTs are filled by Cu. The measured density of the CNTs-Cu composite is 8.2 +/- 0.3 g/cm(3), and the volume percentage of voids is 3-6%. The evaluated thermal resistance including the thermal interface resistance and bulk resistance of the composite is as low as 28.4 mm(2) K W-1 at a contact pressure of 0.2 MPa. A CNT brush formed on the composite surface can reduce the thermal resistance to be 68.4 mm(2) K W-1 at a contact pressure of 0.25 MPa."

According to the news reporters, the research concluded: "The CNTs-Cu composite shows the ability applicable to many microelectronics applications as a thermal interface material."

For more information on this research see: Improved thermal interface property of carbon nanotube-Cu composite based on supercritical fluid deposition. Carbon, 2014;75():281-288. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)

Our news journalists report that additional information may be obtained by contacting Z.L. An, Tohoku University, Micro Syst Integrat Center, Aoba Ku, Sendai, Miyagi 9800845, Japan. Additional authors for this research include M. Toda and T. Ono (see also Carbon Research).

Keywords for this news article include: Asia, Japan, Miyagi, Carbon Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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