Optical trapping of nanoparticles suspended in water with a bull’s eye-type plasmonic chip

Chie Hosokawa; Takashi Koizumi; Tomoya Nagasue; Keiko Tawa

doi:10.1117/12.2616159

27 October 2021 Optical trapping of nanoparticles suspended in water with a bull’s eye-type plasmonic chip

Chie Hosokawa, Takashi Koizumi, Tomoya Nagasue, Keiko Tawa

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 119260W (2021) https://doi.org/10.1117/12.2616159
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

We demonstrate surface plasmon resonance (SPR) based optical trapping of quantum-dot (QD) nanoparticles suspended in water with a bull’s eye-type plasmonic chip. The particle dynamics of QD suspensions at the laser focus was evaluated by fluorescence correlation spectroscopy. The average transit time of QD suspensions on the plasmonic chip increased than that on the coverslip, suggesting that single QD was more constrained at the focal spot due to optical trapping enhanced with SPR.

Citation Download Citation

Chie Hosokawa, Takashi Koizumi, Tomoya Nagasue, and Keiko Tawa "Optical trapping of nanoparticles suspended in water with a bull’s eye-type plasmonic chip", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 119260W (27 October 2021); https://doi.org/10.1117/12.2616159

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