Transportation of dielectric particles along illumination pattern with bend and phase gradient
| Autor: | Dongjie Bao, Kai Niu, Shaohua Tao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Optical sorting Plane (geometry) business.industry Phase (waves) 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Optics Optical tweezers 0103 physical sciences Perpendicular Physics::Accelerator Physics Particle Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology business Beam (structure) |
| Zdroj: | Optics Communications. 458:124842 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2019.124842 |
| Popis: | Automatic transportation of optically trapped particles along a bend in the plane perpendicular to beam propagation direction was realized with a beam of designed amplitude and phase distributions. The bends were formed with illumination pattern and possessed phase gradients. The relation between the motion of dielectric particles and the bends of different angles was analyzed, and experiment was carried out to demonstrate the automatic transportation. We also investigated influence of the angle of a bend on the transportation speed of a trapped particle. The bend with phase gradients is critical for realization of automatic movement of particles along an arbitrary route which can be constructed with combination of bends, arcs, and lines. The proposed technique can be applied for directional transportation and optical sorting. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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