Physics – Condensed Matter – Materials Science
Scientific paper
2010-06-02
Physics
Condensed Matter
Materials Science
Scientific paper
We study the Brownian motion (BM) of optically trapped graphene flakes. These orient orthogonal to the light polarization, due to the optical constants anisotropy. We explain the flake dynamics, measure force and torque constants and derive a full electromagnetic theory of optical trapping. The understanding of two dimensional BM paves the way to light-controlled manipulation and all-optical sorting of biological membranes and anisotropic macromolecules.
Bonaccorso F.
Borghese Ferdinando
Calogero G.
Denti Paolo
Ferrari Andrea Carlo
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