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Microparticle manipulation using femtosecond photonic nanojet-assisted laser cavitation

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Abstract

We report the effect of laser cavitation in water initiated by femtosecond pulses confined into subwavelength volume of photonic nanojet of spherical microparticles. The effect of nanoscale optical breakdown was employed for controllable and nondestructive micromanipulation of silica microspheres. We combine this technique with optical trapping for cyclic particle movements and estimate a peak velocity and an acceleration acquired by microspheres propelled by nanojet cavitation. Our study provides a strategy for nondestructive optical micromanipulation, cavitation-assisted drug delivery, and laser energy transduction in microdevices.

© 2018 Optical Society of America

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Supplementary Material (1)

NameDescription
Visualization 1       2.25 µm silica microsphere movements under femtosecond laser photonic nanojet-assisted cavitation in water at 1 kHz repetition rate.

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