Robust and high-sensitivity thermal probing at the nanoscale based on resonance Raman ratio (R3)

作     者：Hamidreza Zobeiri Nicholas Hunter Shen Xu Yangsu Xie Xinwei Wang Hamidreza Zobeiri;Nicholas Hunter;Shen Xu;Yangsu Xie;Xinwei Wang

作者机构：Department of Mechanical EngineeringIowa State UniversityAmesIA 50011United States of America School of Mechanical and Automotive EngineeringShanghai University of Engineering Science333 Longteng RoadShanghai 201620People’s Republic of China College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong 518055People’s Republic of China 

出 版 物：《International Journal of Extreme Manufacturing》 (极端制造（英文）)

年 卷 期：2022年第4卷第3期

页      面：150-161页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 070302[理学-分析化学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 0702[理学-物理学] 

基　　金：Support of this work by National Science Foundation(CBET1930866 and CMMI2032464 for X W) National Natural Science Foundation of China(No.52106220 for S X and No.51906161 for Y X) 

主　　题：resonant Raman scattering two-dimensional(2D)materials Raman intensity ratio ET-Raman thermal conductivity 

摘      要：Raman spectroscopy-based temperature sensing usually tracks the change of Raman wavenumber,linewidth and intensity,and has found very broad applications in characterizing the energy and charge transport in nanomaterials over the last *** temperature coefficients of these Raman properties are highly material-dependent,and are subjected to local optical scattering *** a result,Raman-based temperature sensing usually suffers quite large uncertainties and has low ***,a novel method based on dual resonance Raman phenomenon is developed to precisely measure the absolute temperature rise of nanomaterial(nm WS_(2) film in this work)from 170 to 470 K.A 532 nm laser(2.33 eV photon energy)is used to conduct the Raman *** photon energy is very close to the excitonic transition energy of WS_(2) at temperatures close to room temperature.A parameter,termed resonance Raman ratio(R3)Ω=I_(A1g)/IE_(2g) is introduced to combine the temperature effects on resonance Raman scattering for the A_(1g) and E_(2g) modes.Ω has a change of more than two orders of magnitude from 177 to 477 K,and such change is independent of film thickness and local optical *** is shown that when Ω is varied by 1%,the temperature probing sensitivity is 0.42 K and 1.16 K at low and high temperatures,*** on Ω,the in-plane thermal conductivity(k)of a∼25 nm-thick suspended WS_(2) film is measured using our energy transport state-resolved Raman(ET-Raman).k is found decreasing from 50.0 to 20.0 Wm^(−1) K^(−1) when temperature increases from 170 to 470 *** agrees with previous experimental and theoretical results and the measurement data using our *** R3 technique provides a very robust and high-sensitivity method for temperature probing of nanomaterials and will have broad applications in nanoscale thermal transport characterization,non-destructive evaluation,and manufacturing monitoring.