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5 March 2021 Dynamics and sorting of microspheres in OAM-carrying optical trapping potentials
Valeriya Bobkova, Ramon Runde, Jan Stegemann, Dominic Kampmann, Cornelia Denz
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Proceedings Volume 11701, Complex Light and Optical Forces XV; 117011C (2021) https://doi.org/10.1117/12.2579514
Event: SPIE OPTO, 2021, Online Only
Abstract
Within recent years, optical micromanipulation has opened a broad field of applications in biomechanics, microrheology and nanoparticle assembly. In these fields, a highly desired action is sorting of the objects under consideration by their size. In this contribution, we employ Laguerre-Gaussian beams with helical phase fronts as trapping potential for dielectric particles and investigate the dynamics and size-dependent assembly of silica microspheres, induced by light-matter interactions. We demonstrate both experimentally and numerically, that by adjusting the parameters of the tailored trapping potential, spatial segregation of particles by size is possible.
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Valeriya Bobkova, Ramon Runde, Jan Stegemann, Dominic Kampmann, and Cornelia Denz "Dynamics and sorting of microspheres in OAM-carrying optical trapping potentials", Proc. SPIE 11701, Complex Light and Optical Forces XV, 117011C (5 March 2021); https://doi.org/10.1117/12.2579514
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KEYWORDS
Particles
Optical tweezers
Dielectrics
Light-matter interactions
Optical micromanipulation
Optical spheres
Sensors
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