...
首页> 外文期刊>Physical review >Reduction of thermal conductance by coherent phonon scattering in two-dimensional phononic crystals of different lattice types
【24h】

Reduction of thermal conductance by coherent phonon scattering in two-dimensional phononic crystals of different lattice types

机译:通过不同晶格类型的二维声子晶体中的相干声子散射来降低热导

获取原文
获取原文并翻译 | 示例
           

摘要

The impact of lattice type, period, porosity, and thickness of two-dimensional silicon phononic crystals on the reduction of thermal conductance by coherent modification of phonon dispersion is investigated using the theory of elasticity and the finite element method. Increases in the period and porosity of the phononic crystal affect the group velocity and phonon density of states and, as a consequence, reduce the in-plane thermal conductance of the structure as compared to the unpatterned membrane. This reduction does not depend significantly on the lattice type and thickness of phononic crystals. Moreover, the reduction is strongly temperature dependent and strengthens as the temperature is increased.
机译:利用弹性理论和有限元方法,研究了二维硅声子晶体的晶格类型,周期,孔隙率和厚度对通过声子色散的相干修饰而降低热导率的影响。声子晶体的周期和孔隙率的增加会影响基团的速度和态的声子密度,因此,与未构图的膜相比,会降低结构的面内导热率。这种减少并不明显取决于声子晶体的晶格类型和厚度。此外,还原率强烈依赖于温度,并且随着温度升高而增强。

著录项

  • 来源
    《Physical review》 |2016年第4期|045410.1-045410.6|共6页
  • 作者单位

    Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan;

    Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan,Institute for Nano Quantum Information Electronics, University of Tokyo, Tokyo 153-8505, Japan,PRESTO, Japan Science and Technology Agency, Saitama 332-0012, 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