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Detecting and measuring single viruses and nanoparticles with an optical microresonator

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Abstract

We show that adsorption of individual viruses and nanoparticles leads to discrete changes in the mode splitting spectra of a whispering-gallery-mode (WGM) microcavity, which enables a single nanoparticle spectrometry scheme to measure each particle.

© 2011 Optical Society of America

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