Nano Archive

Low temperature thermocompression bonding between aligned carbon nanotubes and metallized substrate

Chen, M X and Song, X H and Gan, Z Y and Liu, S (2011) Low temperature thermocompression bonding between aligned carbon nanotubes and metallized substrate. Nanotechnology, 22 (34). p. 345704.

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Official URL: http://stacks.iop.org/0957-4484/22/i=34/a=345704

Abstract

Vertically aligned carbon nanotube (VACNT) turf is proposed for use as an electrical and thermal contact material. For these applications, one route for circumventing the high temperatures required for VACNT growth using chemical vapor deposition (CVD) is used to grow firstly VACNTs on one substrate and then transfer them to other substrates. In this work, a nano thermocompression bonding technique between VACNTs and a metallized substrate is developed to allow dry mechanical transfer of the VACNTs. Unlike the diffusion bonding between two bulk materials, nano metal clusters have a high surface energy and the atoms are very active to form alloy with the contacted bulk metal material even at much lower temperatures, so nano thermocompression bonding can decrease the bonding temperature (150 °C) and pressure (1 MPa) and greatly shorten the bonding time from hours to 20 min. A debonding experiment shows that the bonding strength between VACNTs and the metallized layer is so high that a break is less likely to occur at the bonding interface.

Item Type:Article
ID Code:11136
Deposited By:Prof. Alexey Ivanov
Deposited On:01 Nov 2011 23:57
Last Modified:02 Nov 2011 00:47

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