Plasmonic nanoantenna hydrophones

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Author
Maksymov, IS; Greentree, ADDate
2016-09-09Source Title
Scientific ReportsPublisher
NATURE PUBLISHING GROUPUniversity of Melbourne Author/s
Greentree, AndrewAffiliation
School of PhysicsMetadata
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Journal ArticleCitations
Maksymov, I. S. & Greentree, A. D. (2016). Plasmonic nanoantenna hydrophones. SCIENTIFIC REPORTS, 6 (1), https://doi.org/10.1038/srep32892.Access Status
Open AccessAbstract
Ultrasound is a valuable biomedical imaging modality and diagnostic tool. Here we theoretically demonstrate that a single dipole plasmonic nanoantenna can be used as an optical hydrophone for MHz-range ultrasound. The nanoantenna is tuned to operate on a high-order plasmon mode, which provides an increased sensitivity to ultrasound in contrast to the usual approach of using the fundamental dipolar plasmon resonance. Plasmonic nanoantenna hydrophones may be useful for ultrasonic imaging of biological cells, cancer tissues or small blood vessels, as well as for Brillouin spectroscopy at the nanoscale.
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