Light-induced pattern formation of colloidal particle suspensions driven by optical feedback

Valeriia Bobkova; Alexander Goenner; Cornelia Denz

doi:10.1117/12.2594192

1 August 2021 Light-induced pattern formation of colloidal particle suspensions driven by optical feedback

Valeriia Bobkova, Alexander Goenner, Cornelia Denz

Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 117980P (2021) https://doi.org/10.1117/12.2594192
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

We investigate the nonlinear behavior of a colloidal particle suspension driven by light in an optical single feedback system. We show numerically and experimentally that the process of transverse pattern formation is fundamentally similar to self-organized dynamics in volumetric media as for instance photorefractive or liquid crystals, but obtains, however, an additional degree of complexity due to the stochastic nature of colloidal suspensions. Additionally, we demonstrate experimentally the ability to control the formation of emerging patterns by sculpting the Fourier spectrum of the optical system. Thus, we extend a deeply studied feedback configuration by an ensemble of soft-matter particles and will present insights into this fascinating field of self-driven light-matter interaction.

Conference Presentation

Citation Download Citation

Valeriia Bobkova, Alexander Goenner, and Cornelia Denz "Light-induced pattern formation of colloidal particle suspensions driven by optical feedback", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 117980P (1 August 2021); https://doi.org/10.1117/12.2594192

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