Brownian Motion of Graphene
O.M. Marago, F. Bonaccorso, R. Saija, G.Privitera, P.G. Gucciardi,, M.A. Iati, G. Calogero, P.H. Jones, F. Borghese, P. Denti, V. Nicolosi, A.C., Ferrari
TL;DR
This paper investigates the Brownian motion of optically trapped graphene flakes, providing a comprehensive electromagnetic theory and insights into light-controlled manipulation of anisotropic particles.
Contribution
It introduces a full electromagnetic theory of optical trapping for anisotropic graphene flakes and explores their Brownian dynamics.
Findings
Measured force and torque constants for graphene flakes
Developed a theoretical model explaining flake orientation and motion
Demonstrated potential for optical sorting of biological membranes
Abstract
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.
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Taxonomy
TopicsElectrohydrodynamics and Fluid Dynamics · Quantum Information and Cryptography · Mechanical and Optical Resonators