Optical Measurements of Three-Dimensional Microscopic Temperature Distributions Around Gold Nanorods Excited by Localized Surface Plasmon

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The measurement and control of the temperature in microscopic systems, which are increasingly required in diverse applications, are fundamentally important. Yet, the measurement of the three-dimensional (3D) temperature distribution in microscopic systems has not been demonstrated. We propose and experimentally demonstrate the measurement of the 3D temperature distribution by exploiting the temperature dependency of the refractive index (RI). Measurement of the RI distribution of water makes it possible to quantitatively obtain its 3D temperature distribution above a glass substrate coated with gold nanorods with submicrometer resolution in a temperature range of 100 °C and with a sensitivity of 2.88 °C. The 3D temperature distributions that are obtained enable various thermodynamic properties including the maximum temperature, heat flux, and thermal conductivity to be extracted and analyzed quantitatively.
Publisher
AMER PHYSICAL SOC
Issue Date
2019-04
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW APPLIED, v.11, no.4

ISSN
2331-7019
DOI
10.1103/physrevapplied.11.044079
URI
http://hdl.handle.net/10203/262005
Appears in Collection
ME-Journal Papers(저널논문)BiS-Journal Papers(저널논문)PH-Journal Papers(저널논문)
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