Measurement of single nanoparticle anisotropy by laser induced optical alignment and Rayleigh scattering for determining particle morphology

• URL: http://arxiv.org/abs/2209.10037v2
• Date: Sun, 18 Dec 2022 22:27:05 GMT
• Title: Measurement of single nanoparticle anisotropy by laser induced optical alignment and Rayleigh scattering for determining particle morphology
• Authors: Markus Rademacher, Jonathan Gosling, Antonio Pontin, Marko Toro\v{s}, Jence T. Mulder, Arjan J. Houtepen and P.F. Barker
• Abstract summary: We demonstrate the measurement of nanoparticle shape by angularly resolved Rayleigh scattering of single optical levitated particles. This technique is applied to a range of particle geometries, from perfect spherical nanodroplets to octahedral nanocrystals.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We demonstrate the measurement of nanoparticle shape by angularly resolved Rayleigh scattering of single optical levitated particles that are oriented in space via the trapping light in vacuum. This technique is applied to a range of particle geometries, from perfect spherical nanodroplets to octahedral nanocrystals. We show that this method can resolve shape differences down to a few nanometers and be applied in both low-damping environments, as demonstrated here, and in traditional overdamped fluids used in optical tweezers.

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