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Publication - Dr Simon Hanna

    Optical forces on patterned particles

    Citation

    O'Donnell, M & Hanna, S, 2019, ‘Optical forces on patterned particles’. in: Enrique J Galvez, David L Andrews, Jesper Gluckstad (eds) Complex Light and Optical Forces XIII. Society of Photo-Optical Instrumentation Engineers (SPIE)

    Abstract

    The non-conservative nature of optical forces has been explored previously, with the initial focus on spherical particles, and latterly on particles with less than spherical symmetry. Non-conservative optical forces occur in many different guises, and include lateral forces arising from shape asymmetry, polarisation dependant optical torques and spin-dependant lateral forces. Photo-induced curing of liquid crystalline polymers is a technique that may be used to generate refractive-index patterning of surfaces. Here, we use computational methods to examine the influence of such surface structuring on optically-generated forces and torques, with a view to optimising such materials for applications as light-driven sensors and actuators.

    Full details in the University publications repository