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dc.contributor.authorCollins, DJ
dc.contributor.authorDevendran, C
dc.contributor.authorMa, Z
dc.contributor.authorNg, JW
dc.contributor.authorNeild, A
dc.contributor.authorAi, Y
dc.date.accessioned2020-12-09T23:42:06Z
dc.date.available2020-12-09T23:42:06Z
dc.date.issued2016-07-01
dc.identifierpii: 1600089
dc.identifier.citationCollins, D. J., Devendran, C., Ma, Z., Ng, J. W., Neild, A. & Ai, Y. (2016). Acoustic tweezers via sub-time-of-flight regime surface acoustic waves. SCIENCE ADVANCES, 2 (7), https://doi.org/10.1126/sciadv.1600089.
dc.identifier.issn2375-2548
dc.identifier.urihttp://hdl.handle.net/11343/253301
dc.description.abstractMicrometer-scale acoustic waves are highly useful for refined optomechanical and acoustofluidic manipulation, where these fields are spatially localized along the transducer aperture but not along the acoustic propagation direction. In the case of acoustic tweezers, such a conventional acoustic standing wave results in particle and cell patterning across the entire width of a microfluidic channel, preventing selective trapping. We demonstrate the use of nanosecond-scale pulsed surface acoustic waves (SAWs) with a pulse period that is less than the time of flight between opposing transducers to generate localized time-averaged patterning regions while using conventional electrode structures. These nodal positions can be readily and arbitrarily positioned in two dimensions and within the patterning region itself through the imposition of pulse delays, frequency modulation, and phase shifts. This straightforward concept adds new spatial dimensions to which acoustic fields can be localized in SAW applications in a manner analogous to optical tweezers, including spatially selective acoustic tweezers and optical waveguides.
dc.languageEnglish
dc.publisherAMER ASSOC ADVANCEMENT SCIENCE
dc.titleAcoustic tweezers via sub-time-of-flight regime surface acoustic waves
dc.typeJournal Article
dc.identifier.doi10.1126/sciadv.1600089
melbourne.affiliation.departmentBiomedical Engineering
melbourne.source.titleScience Advances
melbourne.source.volume2
melbourne.source.issue7
dc.rights.licenseCC BY-NC
melbourne.elementsid1359238
melbourne.contributor.authorCollins, David
dc.identifier.eissn2375-2548
melbourne.accessrightsOpen Access


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