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31 March 2023 Plasmon-induced photoacoustic transducer for non-invasive skin tightening
Hamin Na, Hyun-Kyung Kim, Byoung-Hoon Kang, Eun-Sil Yu, Guei-Sam Lim, Nayoung Kim, Ki-Hun Jeong
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Proceedings Volume 12434, MOEMS and Miniaturized Systems XXII; 124340E (2023) https://doi.org/10.1117/12.2649566
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
This paper reports a plasmon-induced photoacoustic transducer for non-invasive skin tightening using a laser diode and an ultrathin nanoplasmonic optical absorber. The nanoplasmonic absorber consists of three-dimensional Au nanoislands (Au NIs) with high optical absorption and polydimethylsiloxane (PDMS) thin film with high thermal expansion coefficient. The low-cost and compact laser diode (LD) significantly scales down the conventional photoacoustic system based on bulk solid-state lasers and excites the nanoplasmonic absorber with sufficient optical energy to generate MHz-scale ultrasound. This plasmon-induced photoacoustic transducer opens new opportunities for ultrasound in dermatology, extending its application to portable at-home skin-care device.
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Hamin Na, Hyun-Kyung Kim, Byoung-Hoon Kang, Eun-Sil Yu, Guei-Sam Lim, Nayoung Kim, and Ki-Hun Jeong "Plasmon-induced photoacoustic transducer for non-invasive skin tightening", Proc. SPIE 12434, MOEMS and Miniaturized Systems XXII, 124340E (31 March 2023); https://doi.org/10.1117/12.2649566
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KEYWORDS
Photoacoustic spectroscopy
Transducers
Skin
Ultrasonography
Gold
Tissue optics
Nanoplasmonics
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