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Single Molecule Detection with an Optomechanical Nanosensor

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Abstract

We report 50-milli-Hertz-linewidth optomechanical oscillation of a silica microsphere immersed in a buffer solution. Using the microsphere as a nanosensor, single 10-nm-radius silica beads and Bovine serum albumin (BSA) protein molecules were detected.

© 2015 Optical Society of America

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