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3 October 2024 Optomechanics of levitated nanorotors
Peter F. Barker, Jonthan Gosling, M. Rademacher
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Proceedings Volume PC13112, Optical Trapping and Optical Micromanipulation XXI; PC131120O (2024) https://doi.org/10.1117/12.3029794
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
We describe the characterization of single nanoparticles based on the measurement of their rotational and oscillatory motion when optically levitated within vacuum. Using colloidally grown yttrium lithium fluoride nanocrystals of different sizes, trapped in a single-beam optical tweezer, we demonstrate the utility of this method which is in good agreement with simulations of the dynamics. Size differences as small as a few nanometers could be resolved using this technique offering a new optical spectroscopic tool for non-contact characterization of single nanoparticles in the absence of a substrate
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Peter F. Barker, Jonthan Gosling, and M. Rademacher "Optomechanics of levitated nanorotors", Proc. SPIE PC13112, Optical Trapping and Optical Micromanipulation XXI, PC131120O (3 October 2024); https://doi.org/10.1117/12.3029794
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KEYWORDS
Nanoparticles
Spectroscopy
Atmospheric particles
Nanocrystals
Optical spectroscopy
Optical tweezers
Simulations
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