Analysis of a nano-particle rotation using a plasmonic trimer nano-structure

Shutaro Ishida; Kota Sudo; Keiji Sasaki

doi:10.1117/12.2275410

18 April 2017 Analysis of a nano-particle rotation using a plasmonic trimer nano-structure

Shutaro Ishida, Kota Sudo, Keiji Sasaki

Proceedings Volume 10252, Optical Manipulation Conference; 1025210 (2017) https://doi.org/10.1117/12.2275410
Event: SPIE Technologies and Applications of Structured Light, 2017, Yokohama, Japan

Abstract

In this paper, we have demonstrated a nano-particle rotation above a plasmonic gold trimer nano-structure with a nanogap. We designed the plasmonic trimer nano-structure which has a resonant frequency matched to excitation and made it with electron beam lithography with metal lift-off process. At first, with an actively rotating linearly polarized beam excitation, we have realized a rotational motion of a trapped nano-particle synchronized to a polarization of beam. Next, we observed a nano-particle rotation using a circularly polarized beam. From the auto-correlation of position time trace with sinusoidal fitting, we confirmed a faster rotation of nano-particle than that of an actively rotating linearly polarized beam.

Citation Download Citation

Shutaro Ishida, Kota Sudo, and Keiji Sasaki "Analysis of a nano-particle rotation using a plasmonic trimer nano-structure", Proc. SPIE 10252, Optical Manipulation Conference, 1025210 (18 April 2017); https://doi.org/10.1117/12.2275410

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