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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >THERMAL PROPERTY MEASUREMENTS OF NANOTUBES, NANOWIRES, AND NANOBELTS
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THERMAL PROPERTY MEASUREMENTS OF NANOTUBES, NANOWIRES, AND NANOBELTS

机译：纳米管，纳米线和纳米带的热性能测量

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摘要

As materials are confined to low dimensions with a size comparable to the scattering mean free paths, the thermal conductivity is often reduced due to increased boundary scattering. The reduced thermal conductivity is desirable in some applications such as thermoelectric cooling, but is often unwanted for others especially for nanoelectronic devices. An exception of this scaling trend is carbon nanotubes (CNTs). Due to the unique crystalline structure, boundary scattering is nearly absent in CNTs, giving rise to super high thermal and electrical conductivity that makes the CNT an ideal candidate for replacing Cu in future VLSI interconnects. The potential electronic applications have inspired several groups to employ a variety of techniques for measuring the Seebeck coefficient, specific heat, and thermal conductivity of CNT bundles and mats. Estimated thermal conductivity from these measurements is significantly reduced by numerous tube-tube junctions in the sample and is much lower than the theoretical expectation.
机译：由于材料被限制在低尺寸且尺寸与散射平均自由程相当，因此由于边界散射的增加，导热系数通常会降低。降低的热导率在诸如热电冷却的某些应用中是期望的，但是对于其他应用尤其是对于纳米电子器件通常是不希望的。碳纳米管（CNT）是这种缩放趋势的一个例外。由于独特的晶体结构，CNT中几乎不存在边界散射，从而产生了超高的导热性和导电性，这使CNT成为替代未来VLSI互连中的Cu的理想选择。潜在的电子应用启发了数个小组，采用了多种技术来测量CNT束和毡的塞贝克系数，比热和热导率。这些测量中估计的热导率因样品中的许多管-管结而显着降低，并且远低于理论预期。

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