...
首页> 外文期刊>Physica, B. Condensed Matter >Structure and thermophysical properties of single-wall Si nanotubes
【24h】

Structure and thermophysical properties of single-wall Si nanotubes

机译:单壁硅纳米管的结构和热物理性质

获取原文
获取原文并翻译 | 示例
           

摘要

In this work, molecular dynamics (MD) simulation based on the environment-dependent interatomic potential is carried out to explore the structure, atomic energy distribution, and thermophysical properties of single-wall Si nanotubes (SWSNTs). The unique structure of SWSNTs leads to a wider range energy distribution than crystal Si (c-Si), and results in a bond order in the range of 4.8-5. The thermal conductivity of SWSNTs is much smaller than that of bulk Si, and shows significantly slower change with their characteristic size than that of Si films. Out of the three types of SWSNTs studied in this work, pentagonal SWSNTs have the highest thermal conductivity while hexagonal SWSNTs have the lowest one. The specific heat of SWSNTs is a little larger than that of bulk c-Si. Pentagonal and hexagonal SWSNTs have close specific heats, which are a little larger than that of rectangular SWSNTs. (c) 2007 Elsevier B.V. All rights reserved.
机译:在这项工作中,基于环境相关的原子间电势进行了分子动力学(MD)模拟,以探索单壁Si纳米管(SWSNT)的结构,原子能分布和热物理性质。 SWSNTs的独特结构比晶体Si(c-Si)导致更大的范围能量分布,并导致键序在4.8-5范围内。 SWSNTs的热导率远小于块状Si,并且其特征尺寸的变化明显慢于Si膜。在这项工作研究的三种类型的SWSNT中,五边形SWSNT的导热系数最高,而六角形SWSNT的导热系数最低。 SWSNTs的比热略高于块状c-Si的比热。五角形和六边形SWSNT具有接近的比热,比矩形SWSNT的比热稍大。 (c)2007 Elsevier B.V.保留所有权利。

著录项

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