Photoacoustic property of Gallium-based liquid metals measured with intensity modulated high repetition supercontinuum laser

Xiuru Wu; Tayyab Farooq; Liangliang Li; Sheng Yan; Hui Fang

doi:10.1117/12.3005850

24 November 2023 Photoacoustic property of Gallium-based liquid metals measured with intensity modulated high repetition supercontinuum laser

Xiuru Wu, Tayyab Farooq, Liangliang Li, Sheng Yan, Hui Fang

Author Affiliations +

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351B (2023) https://doi.org/10.1117/12.3005850
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Gallium-based liquid metals (LMs), including elemental gallium and associated alloy metals, are notable for their liquid state at room temperature. These LMs have gained attention due to their safety, non-toxicity, and exceptional physical and chemical properties. They exhibit optical resonance in the UV-VIS-IR spectral range, making them potential alternatives to expensive precious metals like gold and silver. However, the optical properties of gallium-based LMs have not been fully explored, especially their photoacoustic property. Photoacoustic detection is a label free method based on photoacoustic effect, detecting the optical absorption contrast of samples through photoacoustic waves. Photoacoustic detection has the advantages of non-contact, highs sensitivity, good contrast and etc. Using the photoacoustic detection method, we can avoid the influence of light scattering on the metal surface and thus obtain the optical absorption of gallium-based LMs directly. In this paper, we report a photoacoustic detection system based on intensity modulated high repetition supercontinuum laser to explore the light absorption properties of EGaIn LM.

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Xiuru Wu, Tayyab Farooq, Liangliang Li, Sheng Yan, and Hui Fang "Photoacoustic property of Gallium-based liquid metals measured with intensity modulated high repetition supercontinuum laser", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351B (24 November 2023); https://doi.org/10.1117/12.3005850

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KEYWORDS

Photoacoustic spectroscopy

Liquids

Metals

Light absorption

Modulation

Absorption spectrum

Color

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