Rotational dynamics and heating of trapped nanovaterite particles
Arita, Yoshihiko and Richards, Joseph M. and Mazilu, Michael and Spalding, Gabriel C. and Skelton Spesyvtseva, Susan E. and Craig, Derek and Dholakia, Kishan (2016) Rotational dynamics and heating of trapped nanovaterite particles. ACS Nano, 10 (12). pp. 11505-11510. ISSN 1936-0851 (https://doi.org/10.1021/acsnano.6b07290)
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Abstract
We synthesize, optically trap, and rotate individual nanovaterite crystals with a mean particle radius of 423 nm. Rotation rates of up to 4.9 kHz in heavy water are recorded. Laser-induced heating due to residual absorption of the nanovaterite particle results in the superlinear behavior of the rotation rate as a function of trap power. A finite element method based on the Navier-Stokes model for the system allows us to determine the residual optical absorption coefficient for a trapped nanovaterite particle. This is further confirmed by the theoretical model. Our data show that the translational Stokes drag force and rotational Stokes drag torque need to be modified with appropriate correction factors to account for the power dissipated by the nanoparticle.
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Item type: Article ID code: 74637 Dates: DateEvent27 December 2016Published1 December 2016AcceptedSubjects: Science > Physics Department: Faculty of Science > Physics
Faculty of Science > Pure and Applied ChemistryDepositing user: Pure Administrator Date deposited: 17 Nov 2020 16:27 Last modified: 04 Dec 2024 19:45 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/74637