Optical trapping dynamics of nanoparticles by resonant optical response

Ko Ueno; Tatsunori Kishimoto; Kyoko Masui; Chie Hosokawa

doi:10.1117/12.2659047

8 December 2022 Optical trapping dynamics of nanoparticles by resonant optical response

Ko Ueno, Tatsunori Kishimoto, Kyoko Masui, Chie Hosokawa

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 124790Q (2022) https://doi.org/10.1117/12.2659047
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

For the purpose of precise manipulation of single nanoparticles by optical trapping, we demonstrated optical trapping of nanoparticles enhanced depending on the wavelength of excitation laser. The optical trapping dynamics of quantum dot (QD) nanoparticles at the focal spot was evaluated by fluorescence correlation spectroscopy (FCS). The simultaneous irradiation with excitation and near-infrared lasers increased the average transit time of QDs at the focal spot, which depended on the laser power and the wavelength of the excitation laser. This suggests that the particle motion of QD nanoparticles is constrained at the laser focus due to enhancement of optical trapping based on the resonant optical response.

Citation Download Citation

Ko Ueno, Tatsunori Kishimoto, Kyoko Masui, and Chie Hosokawa "Optical trapping dynamics of nanoparticles by resonant optical response", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 124790Q (8 December 2022); https://doi.org/10.1117/12.2659047

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