中文版 | English
题名

Framework for analyzing the thermoreflectance spectra of metal thermal transducers with spectrally tunable time-domain thermoreflectance

作者
通讯作者Wang,Evelyn N.; Guo,Liang
共同第一作者Zhang,Liang; Li,Weiqiang
发表日期
2020-08-07
DOI
发表期刊
ISSN
0021-8979
EISSN
1089-7550
卷号128期号:5页码:55107
摘要

The time-domain thermoreflectance (TDTR) technique has been widely used to measure thermal properties. The design and interpretation of the TDTR experiment rely on an in-depth understanding of the thermoreflectance signature for a given metal thermal transducer. Although the TDTR signals of several metal thermal transducers have been experimentally investigated, a practical framework bridging the electronic properties and the thermoreflectance characteristics of metal thermal transducers will be helpful for future studies. Compiling published results and our analysis and tests, in this work, we show a theoretical strategy to determine the thermallyinduced change of reflectance spectra with the electronic properties of metal transducers as the input. As a natural consequence of the proposed framework, we show that the optimal probe photon energy occurs near the interband transition threshold of the metal. To validate our approach, TDTR experiments are performed with Au and Cu as two representative metal thermal transducers in two temporal regimes when electrons and lattices have different temperatures (<10 ps) and reach thermal equilibrium (>10 ps), respectively. The experimental results show good agreement with the theory. The work fundamentally elucidates the thermally induced optical response of metal thermal transducers and also provides practical guidelines for choosing the appropriate probe photon energy to optimize the TDTR signal for a given metal thermal transducer, which is useful for broadening the adaptability of TDTR to various experimental conditions, materials, and new laser sources.

相关链接[Scopus记录]
收录类别
SCI ; EI
语种
英语
学校署名
第一 ; 共同第一 ; 通讯
资助项目
National Natural Science Foundation of China (NNSFC)[51806094] ; Characteristic Innovation Project of the Department of Education of Guangdong Province[2018KTSCX202] ; Introduced Innovative R&D Team of Guangdong[2017ZT07C062] ; Centers for Mechanical Engineering Research and Education at MIT and SUSTech[Y01346002] ; Shenzhen Science and Technology Program[KQTD20170810110250357]
WOS研究方向
Physics
WOS类目
Physics, Applied
WOS记录号
WOS:000560399000001
出版者
EI入藏号
20203309058503
EI主题词
Time Domain Analysis ; Probes ; Photons ; Metals ; Electronic Properties
EI分类号
Mathematics:921 ; Atomic And Molecular Physics:931.3
ESI学科分类
PHYSICS
Scopus记录号
2-s2.0-85089364516
来源库
Scopus
引用统计
被引频次[WOS]:8
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/153311
专题工学院_机械与能源工程系
作者单位
1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Mechatronics Engineering,Harbin Institute of Technology,Harbin,150001,China
3.Device Research Laboratory,Department of Mechanical Engineering,Massachusetts Institute of Technology,Cambridge,77 Massachusetts Avenue,02139,United States
第一作者单位机械与能源工程系
通讯作者单位机械与能源工程系
第一作者的第一单位机械与能源工程系
推荐引用方式
GB/T 7714
Zhang,Liang,Li,Weiqiang,Zhang,Lenan,et al. Framework for analyzing the thermoreflectance spectra of metal thermal transducers with spectrally tunable time-domain thermoreflectance[J]. JOURNAL OF APPLIED PHYSICS,2020,128(5):55107.
APA
Zhang,Liang.,Li,Weiqiang.,Zhang,Lenan.,Zhong,Yang.,Guo,Xiao.,...&Guo,Liang.(2020).Framework for analyzing the thermoreflectance spectra of metal thermal transducers with spectrally tunable time-domain thermoreflectance.JOURNAL OF APPLIED PHYSICS,128(5),55107.
MLA
Zhang,Liang,et al."Framework for analyzing the thermoreflectance spectra of metal thermal transducers with spectrally tunable time-domain thermoreflectance".JOURNAL OF APPLIED PHYSICS 128.5(2020):55107.
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