Rotation of millimeter-sized objects using ordinary light

Optics Letters
Olivier Emile, Janine Emile

Abstract

The ability to optically rotate bodies offers new degrees of control of micro-objects with applications in various domains, including microelectromechanical systems (MEMS), biomanipulations, or optofluidics. Here we demonstrate the optically-induced rotation of simple asymmetric two-dimensional objects using plane waves originating either from ordinary laser sources or from black body radiation. The objects are floating on an air/water interface. We observe a steady-state rotation depending on the light intensity and on the asymmetry of the object. We interpret this rotation in terms of light diffraction by the edges of the object. Such systems could be easily implemented in optofluidic devices to induce liquid flow without the need for special light sources.

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Citations

May 3, 2018·Soft Matter·Janine EmileOlivier Emile
Jun 6, 2019·Optics Express·Daniele E LucchettaFrancesco Simoni
Sep 30, 2017·Nano Letters·Nishant SuleNorbert F Scherer
Dec 15, 2016·Nano Letters·Paloma Rodríguez-SevillaPatricia Haro-González

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