Separation of chiral enantiomers by optical force and torque induced by tightly focused vector polarized hollow beams
Literature Information
Xingguang Liu, Junqing Li, Qiang Zhang, Mamo Gebeyehu Dirbeba
Enantioseparation is important for biology, chemistry and even pharmaceutical industries. We propose an approach for discriminating and separating chiral enantiomers by tightly focused vector polarized hollow beams, which possess a transverse spin angular momentum that can rotate the chiral particles along the transverse direction. We demonstrate the different optomechanical behaviours of the particles upon illumination with different vector polarized (azimuthally and radially) hollow beams by numerically calculating the optical force and spin torque. It is believed that this interesting approach may have potential applications in enantioseparation due to its simplicity and accessibility.
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