Light propelled artificial micro-machines

Matthias Rüschenbaum; Naja Burczyk; Julian Jeggle; Jonas Hallekamp; Cornelia Denz; Raphael Wittkowski

doi:10.1117/12.2596493

1 August 2021 Light propelled artificial micro-machines

Matthias Rüschenbaum, Naja Burczyk, Julian Jeggle, Jonas Hallekamp, Cornelia Denz, Raphael Wittkowski

Proceedings Volume 11812, Molecular and Nano Machines IV; 1181209 (2021) https://doi.org/10.1117/12.2596493
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Abstract

Among the numerous propulsion mechanisms developed in the past to self-propelled nano- and micro particles, light-driven machines are most promising, since they enable a natural spatio-temporal control of the motion. We report a novel fuel-free propulsion mechanism induced by an external light stimulus. The actuation relies on refraction of light, while the net propulsion force emerges from an asymmetric particle shape and a symmetry-broken refractive index profile. Two-photon polymerization is employed for fabrication of the artificial machines, whose geometries and refractive index profiles are optimized with the help of numerical simulations. We demonstrate the directional movement of refractive light-propelled particles, and the increased performance of artificial refractive index machines.

Conference Presentation

Citation Download Citation

Matthias Rüschenbaum, Naja Burczyk, Julian Jeggle, Jonas Hallekamp, Cornelia Denz, and Raphael Wittkowski "Light propelled artificial micro-machines", Proc. SPIE 11812, Molecular and Nano Machines IV, 1181209 (1 August 2021); https://doi.org/10.1117/12.2596493

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