Optimising the optical forces from patterned actuators

Simon Hanna; Michael O'Donnell; Oliver Cohen

doi:10.1117/12.2570847

20 August 2020 Optimising the optical forces from patterned actuators

Simon Hanna, Michael O'Donnell, Oliver Cohen

Proceedings Volume 11463, Optical Trapping and Optical Micromanipulation XVII; 114630T (2020) https://doi.org/10.1117/12.2570847
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Extremely large forces and torques have been reported when light is scattered by 2-dimensional metamaterial surfaces. Potential applications include force actuators in optically driven micro-machines, and diffractive solar sails. Here we consider refractive-index patterning of a dielectric substrate achieved photo-lithographically and demonstrate, using a computational electromagnetic approach, how a periodic structure may be optimised to maximise the optical forces and torques generated. We will show that enhancements of two orders of magnitude in the optical force are available in specific cases.

Conference Presentation

Citation Download Citation

Simon Hanna, Michael O'Donnell, and Oliver Cohen "Optimising the optical forces from patterned actuators", Proc. SPIE 11463, Optical Trapping and Optical Micromanipulation XVII, 114630T (20 August 2020); https://doi.org/10.1117/12.2570847

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