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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. 相似文献
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