Optical gradient force on Chiral nanoparticles

Junsuke Yamanishi; Hyo-Yong Ahn; Shun Hashiyada; Hiromi Okamoto

doi:10.1117/12.2573513

15 June 2020 Optical gradient force on Chiral nanoparticles

Junsuke Yamanishi, Hyo-Yong Ahn, Shun Hashiyada, Hiromi Okamoto

Proceedings Volume 11522, Optical Manipulation and Structured Materials Conference 2020; 115220E (2020) https://doi.org/10.1117/12.2573513
Event: SPIE Technologies and Applications of Structured Light, 2020, Yokohama, Japan

Abstract

Optical trapping of nanoparticles is realized by optical gradient force originated from the intensity gradient of light with a focused beam. It is expected that the gradient force depending on the circular polarization (CP) acts on particles with chiral structures. Here, we investigate the CP-dependent gradient force on the chiral gold nanoparticles. We found that the amplitude (dispersion of the position of the Brownian motion) depends on the handedness of the incident light in both cases of D- and L-form particles. Based on the results on the gradient force for the chiral particles, it is expected that chiral nanomaterials can be handled by the circularly polarized light.

Citation Download Citation

Junsuke Yamanishi, Hyo-Yong Ahn, Shun Hashiyada, and Hiromi Okamoto "Optical gradient force on Chiral nanoparticles", Proc. SPIE 11522, Optical Manipulation and Structured Materials Conference 2020, 115220E (15 June 2020); https://doi.org/10.1117/12.2573513

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