摘要
Measuring the microscopic temperature of graphene is challenging.We used cholesteric liquid crystal microcapsules(CLCMs)as temperature sensors to detect the local temperature of three-dimensional porous graphene through quantitative visualization.Based on a CLCM(~20μm in size),we determined the temperature variation in a small area with an accuracy of 0.1℃.By analyzing the color changes between two CLCMs,we demonstrated the temperature changes dynamically in a region with a diameter of approximately 110μm.Furthermore,by comparing the color evolution among the three CLCMs,we visualized the anisotropic thermal properties in the micro-zone.This convenient and low-cost temperature measurement method is expected to further improve graphene-based devices.
作者
Haoyan Jiang
Yaoyi Tang
Xiaohan Zeng
Ruiwen Xiao
Peng Lü
Lei Wang
Yanqing Lu
姜浩研;唐姚懿;曾筱涵;肖芮文;吕鹏;王磊;陆延青(College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;National Laboratory of Solid State Microstructures,Key Laboratory of Intelligent Optical Sensing and Manipulation,and College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China)
基金
supported by the Young Scientists Fund of the National Natural Science Foundation of China(No.61605088)
the Natural Science Foundation of Jiangsu Province,China(No.BK20150845)
the Open Foundation Project of the National Laboratory of Solid State Microstructures,China
the China Postdoctoral Science Foundation(No.2019M651768)。
