Graphene-tuned optical manipulation on microparticle by Bessel beam

Xiaoran Hou, Dongliang Gao, and Lei Gao

We study the optical force on the graphene-coated low-index microparticle by the first-order Bessel beam lighting. We theoretically demonstrate that the optical scattering pulling force is realized near the Fano resonance due to the interference between electric dipole mode and quadrupole one. Moreover, the optical force can be further enhanced and flexibly tuned by controlling the conductivity of the graphene. In order to transport the particle over a long distance, the stability for optical trapping at transverse plane is also analyzed. Our study might offer a new thought to trap and transport dielectric or plasmonic particles, as well as provide potential applications in optical manipulation and optoelectronic devices.

DOI