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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

Description

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]

dc.contributor.authorToe, Wen Jun
dc.contributor.authorOrtega-Piwonka, Ignacio
dc.contributor.authorAngstmann, Christopher N.
dc.contributor.authorGao, Qian
dc.contributor.authorTan, Hark Hoe
dc.contributor.authorJagadish, Chennupati
dc.contributor.authorHenry, B I
dc.contributor.authorReece, Peter
dc.date.accessioned2018-11-29T22:54:37Z
dc.date.available2018-11-29T22:54:37Z
dc.identifier.issn1063-651X
dc.identifier.urihttp://hdl.handle.net/1885/152854
dc.description.abstractWe 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 excellent fit to experimental observations. A persistent low-frequency cyclical motion around the equilibrium trapping position, with a frequency distinct from the spectral resonance, is observed from the time series data.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Physical Society
dc.sourcePhysical Review E
dc.titleNonconservative dynamics of optically trapped high-aspect-ratio nanowires
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume93
dc.date.issued2016
local.identifier.absfor020400 - CONDENSED MATTER PHYSICS
local.identifier.absfor091200 - MATERIALS ENGINEERING
local.identifier.absfor100700 - NANOTECHNOLOGY
local.identifier.ariespublicationU3488905xPUB11628
local.type.statusPublished Version
local.contributor.affiliationToe, Wen Jun, University of New South Wales
local.contributor.affiliationOrtega-Piwonka, Ignacio, The University of New South Wales
local.contributor.affiliationAngstmann, Christopher N., The University of New South Wales
local.contributor.affiliationGao, Qian, College of Science, ANU
local.contributor.affiliationTan, Hoe Hark, College of Science, ANU
local.contributor.affiliationJagadish, Chennupati, College of Science, ANU
local.contributor.affiliationHenry, B I, University of New South Wales
local.contributor.affiliationReece, Peter, University of New South Wales
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage7
local.identifier.doi10.1103/PhysRevE.93.022137
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2018-11-29T08:01:03Z
local.identifier.scopusID2-s2.0-84959286357
local.identifier.thomsonID000370809300003
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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