English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27308/39152
Visitors : 2467169      Online Users : 261
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41595

Title: Thermal conductivity modeling of periodic porous silicon with aligned cylindrical pores
Authors: Tse-Yang Hsieh;Herng Lin;Tsang-Jen Hsieh;Juan-Chen Huang
Contributors: 國立臺灣海洋大學:商船學系
Date: 2012-06
Issue Date: 2017-03-08T07:14:19Z
Publisher: Journal of Applied Physics
Abstract: ABSTRACT: We present a frequency-dependent phonon Boltzmann transport equation (BTE) solver to study phonon transport in arbitrary geometries. For composite and porous structures, most simulations adopted either gray-medium approximation or geometric simplification in phonon BTE model. To show the importance of considering the frequency-dependent phonon transport, transverse thermal transport in periodic porous silicon (PS) with aligned square-cylindrical pores is investigated by the present frequency-dependent phonon BTE solver and gray-medium phonon BTE solver. It is found that phonon size effect is underestimated by adopting the gray-medium approximation in sub-micron scale. To demonstrate geometry effect, the frequency-dependent phonon BTE solver is applied to study transverse thermal transport in the PS with square-cylindrical and circular-cylindrical pores for various characteristic sizes and porosities. The pore shape is found to make great difference to the thermal conductivity of the PS when the characteristic size is decreased or the porosity is increased. Our results indicate the importance of considering the frequency dependence of phonon transport as well as the exact geometry of material structure in the analysis of micro- and nanostructured materials.
Relation: 111(12)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41595
Appears in Collections:[商船學系] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML26View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback