Separating and trapping of chiral nanoparticles with dielectric photonic crystal slabs
Posted on 03.05.2021 - 13:49
Chiral separation is a crucial step in many chemical synthesis processes, particularly for pharmaceuticals. Here we present a novel method for the realization of both separating and trapping of enantiomers using the dielectric photonic crystals (PhC) slabs, which possess quasi-fourfold degenerate Bloch modes (overlapping double degenerate transverse-electric-like and transverse-magnetic-like modes). Based on the designed structure, a large gradient of optical chirality appears near the PhC slab, leading to the extreme enhancement of chiral optical forces about 3 orders of magnitude larger than those obtained with circularly polarized lights. Our proposed optomechanical chiral separator possesses a great potential in the field of chemical syntheses and pharmaceuticals.
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Hou, Saisai; Liu, Ya; Zhang, Weixuan; Zhang, Xiangdong (2021): Separating and trapping of chiral nanoparticles with dielectric photonic crystal slabs. The Optical Society. Collection. https://doi.org/10.6084/m9.figshare.c.5397057.v2
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