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Ion implanted Au nanoparticles in surface plasmon temperature sensing

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Abstract

Temperature dependence of surface plasmon (SP) resonance from implanted Au nanoparticles have been studied in an ambient-air environment from 75 °C to 175 °C. Implantation provides encapsulated Au nanoparticles in a quartz substrate. The SP peak shifts linearly with the temperature increase. The experimental results were confirmed by the Drude model explaining the controlling mechanisms of the peak change. The Au nanoparticles have a higher volume thermal expansion coefficient than the substrate. Therefore, the dominant mechanism was the volume thermal expansion coefficient. This study provides another aspect of temperature sensing in Au nanoparticles which can be provided by ion implantation.

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2021-12-15

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Au nanoparticles | Ion implantation | LSPR | Temperature sensing

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