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Nonconservative dynamics of optically trapped high-aspect-ratio nanowires

Toe, Wen Jun; Ortega-Piwonka, Ignacio; Angstmann, Christopher N.; Gao, Qian; Tan, Hark Hoe; Jagadish, Chennupati; Henry, B I; Reece, Peter


We investigate the dynamics of high-aspect-ratio nanowires trapped axially in a single gradient force optical tweezers. A power spectrum analysis of the dynamics reveals a broad spectral resonance of the order of kHz with peak properties that are strongly dependent on the input trapping power. A dynamical model incorporating linear restoring optical forces, a nonconservative asymmetric coupling between translational and rotational degrees of freedom, viscous drag, and white noise provides an...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: Physical Review E
DOI: 10.1103/PhysRevE.93.022137
Access Rights: Open Access


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