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Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Plasmonic linear nanomotor using lateral optical forces.

Yoshito Y Tanaka¹, Pablo Albella², Mohsen Rahmani³

¹Institute of Industrial Science, University of Tokyo 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan. yoshito@iis.u-tokyo.ac.jp.

Science Advances

|November 5, 2020

Summary

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This summary is machine-generated.

This study introduces a novel plasmonic nanomotor that generates optical force from plane wave illumination. This breakthrough enables precise control over micro-objects without complex laser steering, paving the way for new light-operated devices.

Area of Science:

Nanotechnology
Optics
Materials Science

Background:

Optical forces are crucial for actuating micro-machines.
Current methods necessitate complex laser focusing and steering, hindering device integration.

Purpose of the Study:

To propose a linear nanomotor utilizing a plasmonic particle for optical actuation.
To demonstrate control over lateral optical force distribution beyond the diffraction limit.

Main Methods:

Utilizing a plasmonic nanoparticle that exhibits directional side scattering when illuminated by a plane wave.
Arranging nanoparticles to engineer lateral force distributions for controlled micro-object movement.

Main Results:

The nanomotor generates a lateral optical force independent of field gradients or light propagation direction.

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Last Updated: Dec 2, 2025

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

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Particle orientation dictates the force direction.

Demonstrated precise control over micro-object movement without laser beam manipulation.

Conclusions:

The proposed plasmonic nanomotor offers a simplified approach to optical actuation.
This technology enables the development of novel micro/nanomechanical devices operated entirely by light.