Probing the optical chiral response of single nanoparticles with optical tweezers

  title={Probing the optical chiral response of single nanoparticles with optical tweezers},
  author={Rfaqat Ali and F A Pinheiro and R. S. Dutra and Felipe S. S. Rosa and Paulo A. Maia Neto},
  journal={arXiv: Optics},
We propose an enantioselective scheme to sort homogeneous chiral particles using optical tweezers. For a certain range of material parameters, we show that a highly focused circularly-polarized laser beam traps particles of a specific chirality selected by the handedness of the trapping beam. Furthermore, by applying a transverse Stokes drag force that displaces the trapped particle off-axis, we allow for the rotation of the particle center-of-mass around the trapping beam axis. The rotation… 

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