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Feedback-based positioning and diffusion suppression of particles via optical control of thermoviscous flows.

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Erben,  Elena
Max Planck Institute for Molecular Cell Biology and Genetics, Max Planck Society;

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Stoev,  Iliya D.
Max Planck Institute for Molecular Cell Biology and Genetics, Max Planck Society;

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Klykov,  Sergei
Max Planck Institute for Molecular Cell Biology and Genetics, Max Planck Society;

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Maghelli,  Nicola
Max Planck Institute for Molecular Cell Biology and Genetics, Max Planck Society;

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Kreysing,  Moritz
Max Planck Institute for Molecular Cell Biology and Genetics, Max Planck Society;

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Citation

Erben, E., Seelbinder, B., Stoev, I. D., Klykov, S., Maghelli, N., & Kreysing, M. (2021). Feedback-based positioning and diffusion suppression of particles via optical control of thermoviscous flows. Optics express, 29(19), 30272-30283. doi:10.1364/OE.432935.


Cite as: https://hdl.handle.net/21.11116/0000-000A-0B87-2
Abstract
The ability to control the position of micron-size particles with high precision using tools such as optical tweezers has led to major advances in fields such as biology, physics and material science. In this paper, we present a novel optical strategy to confine particles in solution with high spatial control using feedback-controlled thermoviscous flows. We show that this technique allows micron-size particles to be positioned and confined with subdiffraction precision (24 nm), effectively suppressing their diffusion. Due to its physical characteristics, our approach might be particular attractive where laser exposure is of concern or materials are inherently incompatible with optical tweezing since it does not rely on contrast in the refractive index.