...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Japanese journal of applied physics >Defective Carbon Nanotube for Use as a Thermal Rectifier
【24h】

Defective Carbon Nanotube for Use as a Thermal Rectifier

机译：用作热整流器的不良碳纳米管

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigated the thermal properties of a single-walled carbon nanotube with vacancy defects to determine its applicability to solid-state thermal rectification. Nonequilibrium molecular dynamics simulation of a nanotube with randomly located defects only along half the length revealed asymmetric heat conduction at room temperature. The direction of rectification is in good agreement with that obtained in a past experiment in which C_9H_(16)Pt was asymmetrically deposited on a nanotube, as far as the local deposition is supposed to cause defects in the nanotube lattice. The mechanism underlying the current thermal rectification effect is discussed considering the temperature dependence of the local thermal conductivity and the phonon filtering effect. The calculated phonon density of states shows larger overlapping when heat flows from the defective part to the pristine part and intermediate-frequency phonons are mainly responsible for rectification.
机译：我们研究了具有空位缺陷的单壁碳纳米管的热性能，以确定其在固态热整流中的适用性。具有仅沿着长度的一半随机定位的缺陷的纳米管的非平衡分子动力学模拟显示了室温下的不对称热传导。整流方向与过去的实验中获得的方向一致，在该实验中，C_9H_（16）Pt不对称地沉积在纳米管上，只要局部沉积被认为会在纳米管晶格中引起缺陷即可。考虑到局部导热系数与声子滤波效应的温度相关性，讨论了当前热整流效应的潜在机理。当热量从缺陷部分流向原始部分时，计算得出的状态声子密度显示出更大的重叠，而中频声子主要负责整流。

著录项

  • 来源
    《Japanese journal of applied physics》 |2010年第2issue2期|p.02BD12.1-02BD12.5|共5页
  • 作者

    Koji Takahashi; Masato Inoue; Yohei Ito;

  • 作者单位

    Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395, Japan;

    Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395, Japan;

    Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号