Recent applications of optical tweezers: from Casimir force measurements to enantioselective manipulation of chiral particles.

Paulo Maia Neto

doi:10.1117/12.2633327

3 October 2022 Recent applications of optical tweezers: from Casimir force measurements to enantioselective manipulation of chiral particles.

Paulo Maia Neto

Author Affiliations +

Proceedings Volume PC12198, Optical Trapping and Optical Micromanipulation XIX; PC121980J (2022) https://doi.org/10.1117/12.2633327
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

I will present an overview of recent experiments conducted at the optical tweezers (OT) group at UFRJ, including the demonstration of a negative optical torque, axial position detection and the measurement of a fN attractive Casimir force signal in the distance range from 200 to 500 nm. I will also discuss proposals of enantioselective optical manipulation and characterization of chiral materials which are based on a theoretical model for the optical force and torque in presence of chirality.

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Paulo Maia Neto "Recent applications of optical tweezers: from Casimir force measurements to enantioselective manipulation of chiral particles.", Proc. SPIE PC12198, Optical Trapping and Optical Micromanipulation XIX, PC121980J (3 October 2022); https://doi.org/10.1117/12.2633327

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KEYWORDS

Optical tweezers

Particles

Nanoparticles

Mie scattering

Optical manipulation

Optical microscopes

Optical trapping

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