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Proceedings Paper

Optical microcavities: single virus detection and nanoparticle trapping
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Paper Abstract

Single polystyrene nanoparticles are detected from resonance wavelength fluctuations in toroidal and spherical microcavities. The magnitude of the wavelength-shift signal follows a reactive mechanism with inverse dependence on mode volume. By reducing the size of a microsphere cavity we demonstrate sensitivity to single Influenza A virions. Furthermore, we introduce a novel mechanism for trapping and accumulation of nanoparticles at the microcavity-sensorregion by utilizing light-force exerted in evanescent field gradients.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7397, Biosensing II, 739702 (21 August 2009); doi: 10.1117/12.827264
Show Author Affiliations
Frank Vollmer, Harvard Univ. (United States)
Stephen Arnold, New York Univ. (United States)


Published in SPIE Proceedings Vol. 7397:
Biosensing II
Manijeh Razeghi; Hooman Mohseni, Editor(s)

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