Modulation of optical force acting on small particles by using photochemical reaction and its application to control of optical transportation speed

Syoji Ito; Kenji Setoura; Hiroshi Miyasaka

doi:10.1117/12.3008386

20 September 2023 Modulation of optical force acting on small particles by using photochemical reaction and its application to control of optical transportation speed

Syoji Ito, Kenji Setoura, Hiroshi Miyasaka

Author Affiliations +

Proceedings Volume 12606, Optical Manipulation and Structured Materials Conference; 126061I (2023) https://doi.org/10.1117/12.3008386
Event: Optics and Photonics International Congress, 2023, Yokohama, Japan

Abstract

The speed of optical transportation of microparticles was modified by changing dissipative force acting on the particles through the switching of the absorption spectrum of molecules contained in the particles. Linear and orbital motions of microparticles in water were achieved by using slightly focused laser beams. Polymer microparticles containing photo-chromic molecules under the photoirradiation configuration were transported by the optical force due to scattering. The transportation speed was increased by changing the color of the particles by the photoinduced isomerization from transparent (non-resonant) to resonant with the manipulation beams.

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Syoji Ito, Kenji Setoura, and Hiroshi Miyasaka "Modulation of optical force acting on small particles by using photochemical reaction and its application to control of optical transportation speed", Proc. SPIE 12606, Optical Manipulation and Structured Materials Conference, 126061I (20 September 2023); https://doi.org/10.1117/12.3008386

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