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Brownian Motion of Graphene

First demonstration of the optical trapping and manipulation of graphene, by employing both quantitative experimental results on the centre-of-mass and angular Brownian motion of optically trapped graphene flakes, and theoretical results derived from the T-matrix model of electromagnetic scattering, showing how the flake is stably trapped only for particular orientations of the plane of the flake with respect to the laser polarization. I contributed the analysis from which, using the hydrodynamic mobilities for a flat disk and a set of uncoupled Langevin equations, quantitative information on the trapped graphene orientation and dynamics could be extracted from experimental the data.