Modified Ballistic-Diffusive Equations for Obtaining Phonon Mean Free Path Spectrum from Ballistic Thermal Resistance: II. Derivation of Integral Equation Based on Ballistic Thermal Resistance

被引：1
|
作者：
Kwon, Ohmyoung [1 ]
Wehmeyer, Geoff [2 ]
Dames, Chris [2 ]
机构：
[1] Korea Univ, Sch Mech Engn, Seoul 02841, South Korea
[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA
来源：
NANOSCALE AND MICROSCALE THERMOPHYSICAL ENGINEERING | 2019年 / 23卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
Phonon mean free path; effective thermal conductivity; ballistic thermal resistance; ballistic-diffusive equations; phonon mean free path spectrum; HEAT-CONDUCTION;
D O I：
10.1080/15567265.2019.1628135
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Rebuilding phonon mean free path (MFP) spectra from experimental data is integral to phonon MFP spectroscopy. However, being based on effective thermal conductivity, the current integral equation for this precludes the use of certain heat sources of convenient shapes, such as a cylindrical nanoline. Herein, to enable using diverse specimens exhibiting a ballistic effect, we develop a ballistic thermal resistance-based integral equation, utilizing the ease and accuracy of the modified ballistic-diffusive equations demonstrated in the companion paper. The availability of more diverse shapes of specimens will enhance further development and widen use of phonon MFP spectroscopy.
引用
收藏
页码：334 / 347
页数：14
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