Ray optics in combination with the Gaussian beam propagation method for optical trapping of free-shaped particles in micro fluidic systems
| Autor: | Heidi Ottevaere, D. De Coster, P. Wuytens, Hugo Thienpont |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.2022430 |
| Popis: | We present a novel model for the prediction of particle trapping, in which different assets are combined to calculate optical forces and torques on free-shaped particles. This model suits well for designing an integrated dual fiber optical trap into a microfluidic chip. The force and torque estimation can easily be integrated in the scheme simulating the surrounding optofluidic chip. The propagation of the trapping laser light going through this micro-optical chip is ensured by the ‘Gaussian Beam Propagation Method’ allowing a realistic propagation of various beam profiles in and near the Rayleigh range. Back-reflected rays into and outside the particle are considered by using a non-sequential ray-tracing model. Our model enables the prediction of circumstances in which particles are trapped and how they behave in the optical trap. |
| Databáze: | OpenAIRE |
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