Optoelectronic tweezers under arbitrary illumination patterns: theoretical simulations and comparison to experiment
| Autor: | J. B. Ramiro, Cándido Arregui, Mercedes Carrascosa, Héctor Burgos, A. Méndez, Angel García-Cabañes, A. Alcazar |
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| Rok vydání: | 2014 |
| Předmět: |
Light
Optical Tweezers Lithium niobate Physics::Optics 02 engineering and technology 7. Clean energy 01 natural sciences 010309 optics Crystal chemistry.chemical_compound Optics Electricity Electric field 0103 physical sciences Tweezers Light beam Lighting Physics business.industry Física Models Theoretical 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Light intensity chemistry Optical tweezers Optoelectronics Spatial frequency 0210 nano-technology business Algorithms |
| Zdroj: | Optics Express, ISSN 1094-4087, 2014-11, Vol. 22, No. 23 Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | Photovoltaic tweezers are a promising tool to place and move particles on the surface of a photovoltaic material in a controlled way. To exploit this new technique it is necessary to accurately know the electric field created by a specific illumination on the surface of the crystal and above it. This paper describes a numerical algorithm to obtain this electric field generated by several relevant light patterns, and uses them to calculate the dielectrophoretic potential acting over neutral, polarizable particles in the proximity of the crystal. The results are compared to experiments carried out in LiNbO₃with good overall agreement. |
| Databáze: | OpenAIRE |
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