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We have demonstrated a linear nanomotor employing lateral optical force exerted on a plasmonic nanoparticle, in which the force direction is determined by the orientation of the nanoparticle rather than a field gradient or propagation direction of the incident light beam. The arrangements of the nanoparticles provide the lateral force distributions with nanoscale precision and resolution, resulting in not only linear but also rotational movement of a micrometer-sized object. Our nanomotors would provide a paradigm shift in optical manipulation as it removes the need for oblique incidence, focusing and steering of the light beam.
Yoshito Tanaka
"Plasmonic nanomotors with directional control of scattered light", Proc. SPIE 11477, Molecular and Nano Machines III, 114770C (20 August 2020); https://doi.org/10.1117/12.2569233
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Yoshito Tanaka, "Plasmonic nanomotors with directional control of scattered light," Proc. SPIE 11477, Molecular and Nano Machines III, 114770C (20 August 2020); https://doi.org/10.1117/12.2569233