SGER: Experimental Investigation Into the Thermal Transport in Individual Carbon Nanotubes Along the Atomic Layer Direction

SGER：单个碳纳米管沿原子层方向热传输的实验研究

• 批准号: 0400458
• 负责人: Xinwei Wang
• 金额: $ 4.97万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-01 至 2006-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0400458&HistoricalAwards=false
• 关键词: SGER; Experimental; Investigation; Into; Thermal

The unique structure and dimension of carbon nanotubes (CNTs) lead to novel physical properties that promote a wide variety of potential applications such as high-performance field-effect nanotransistors, novel tips for scanning probe microscopes, and high-efficiency nanotube-based field-emission devices. The objectives of this one-year SGER project are to: (1) conduct exploratory experimental investigation into the high thermal conductivity of CNTs along the atomic layer in the axial direction, and (2) explore the thermal contact resistance between CNTs and the substrate. The proposed project is considered high risk because the unknown thermal conductivity of CNTs and the thermal contact resistance between CNTs and the substrate could be unusually highly to make the proposed technique unable to sense the thermal transport in CNTs with high accuracy. The project will provide important guidance on nanoscale manipulation of CNTs, leading to greater control of thermal transport at the nanometer level. The knowledge that will result from this project will also advance the step toward optimizing the thermal management of CNT devices and systems, thus improving system performance and prolonging device lifetime. Our quantitative investigation into the thermal contact resistance between CNTs and the substrate is a first and important step towards the thermal design of joints between CNTs and micro/nanodevices to achieve desired system performance and stability.

碳纳米管（CNTs）独特的结构和尺寸导致了新的物理性质，这些物理性质促进了各种潜在的应用，例如高性能场效应纳米晶体管、用于扫描探针显微镜的新型尖端以及基于纳米管的高效率场发射器件。本研究项目为期1年，主要目的是：（1）对碳纳米管的高导热性进行探索性实验研究，（2）探索碳纳米管与基板之间的接触热阻。建议的项目被认为是高风险的，因为未知的碳纳米管的热导率和碳纳米管和基板之间的热接触电阻可能是异常高，使所提出的技术无法感测的碳纳米管的热传输与高精度。该项目将为碳纳米管的纳米级操作提供重要指导，从而在纳米级更好地控制热传输。从这个项目中获得的知识也将推动CNT设备和系统的热管理优化，从而提高系统性能并延长设备寿命。我们对CNT和衬底之间的接触热阻的定量研究是CNT和微/纳米器件之间的接头的热设计以实现所需系统性能和稳定性的第一步也是重要的一步。