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Light-Induced Shock Waves in Dense Colloidal Suspensions

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Abstract

We demonstrate theoretically and experimentally gradient-force induced, nanoparticle shock-waves forming in dense strongly scattering colloidal-suspensions. These light-induced directional 'spear-shaped' wavefronts allow concentrating and transporting large amounts of nanoparticles in local regions of a microfluidic channel.

© 2012 Optical Society of America

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