发明名称 |
Thermal interface and switch using carbon nanotube arrays |
摘要 |
Thermal interfaces and methods include an array of carbon nanotubes aligned substantively perpendicularly from a substrate. One method includes arranging metal catalyst particles with a particular ligand on a fluid surface of a Langmuir-Blodgett trough. This forms uniformly spaced particles with spacing based on the particular ligand. The uniformly spaced metal catalyst particles are deposited on a substrate and carbon nanotubes are grown on the particles using chemical vapor deposition. A thermal interface can be produced with a carbon nanotube packing ratio greater than fifty percent and used in a thermal switch or other device. In some methods, commercially available nanotubes are condensed on a substrate using carbon nanotubes with terminal carboxylic acids in solution and an amine monolayer on the substrate. Pretreatment of the nanotubes in a switch by applying heavy pressure between two surfaces results in good thermal conductivity between those surfaces at smaller operating pressures.
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申请公布号 |
US7416019(B2) |
申请公布日期 |
2008.08.26 |
申请号 |
US20040916730 |
申请日期 |
2004.08.11 |
申请人 |
THE JOHNS HOPKINS UNIVERSITY |
发明人 |
OSIANDER ROBERT;SAMPLE JENNIFER L. |
分类号 |
F28F27/00;B32B9/00;C01B31/02;C12Q;C23C16/26;H01L23/373 |
主分类号 |
F28F27/00 |
代理机构 |
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代理人 |
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地址 |
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