Rademacher, Markus;
Gosling, Jonathan;
Pontin, Antonio;
Toroš, Marko;
Mulder, Jence T;
Houtepen, Arjan J;
Barker, PF;
(2022)
Measurement of single nanoparticle anisotropy by laser induced optical alignment and Rayleigh scattering for determining particle morphology.
Applied Physics Letters
, 121
(22)
, Article 221102. 10.1063/5.0128606.
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Abstract
We demonstrate the measurement of nanoparticle anisotropy 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.
| Type: | Article |
|---|---|
| Title: | Measurement of single nanoparticle anisotropy by laser induced optical alignment and Rayleigh scattering for determining particle morphology |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0128606 |
| Publisher version: | https://doi.org/10.1063/5.0128606 |
| Language: | English |
| Additional information: | © 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10160953 |
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