Plasmonic nanoantenna hydrophones
AuthorMaksymov, IS; Greentree, AD
Source TitleScientific Reports
PublisherNATURE PUBLISHING GROUP
University of Melbourne Author/sGreentree, Andrew
AffiliationSchool of Physics
Document TypeJournal Article
CitationsMaksymov, I. S. & Greentree, A. D. (2016). Plasmonic nanoantenna hydrophones. SCIENTIFIC REPORTS, 6 (1), https://doi.org/10.1038/srep32892.
Access StatusOpen Access
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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