The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2022
Session ID : 110
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Improving the Accuracy of the Temperature Measurement Using TRI method for Ag Nanowires with Thermal Deformation
*Yuta SugiharaKanji TamaiMasaki KodamaKazuya TatsumiReiko KuriyamaKazuyoshi Nakabe
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Abstract

To evaluate the characteristic of Joule heating and heat transfer of the network consisted of Ag nanowires (Ag-NWs), we measured the temperature distribution of Ag-NWs randomly dispersed on a glass substrate using the thermoreflectance imaging (TRI) method. The TRI method measures the surface temperature by measuring the change of the reflectance distribution captured by the camera. The measurement accuracy relies significantly on the accuracy of the light intensity measurement and the alignment of the wires among the images. Therefore, the thermal deformation of Ag-NW is an essential issue for the measurement. To solve this problem, we introduced the algorithm extracting the light intensity at the centerline of Ag-NWs in this study, and evaluated the measurement accuracy and confirmed that it can be improved even for small deformation on the order of sub-nanometers.

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© 2022 The Japan Society of Mechanical Engineers
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