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Enantiolective Optical Trapping of Chiral枸杞的药用价值
Nanoparticles with Plasmonic Tweezers 期刊名称： Acs Photonics
作者： Zhao, Yang,Saleh, Amr A. E.,Dionne, Jennifer A.
年份： 2016年遨游近义词
古风漫画人物关键词： chiral molecules;enantiomer paration;nano-optical tweezers;optical forces
烂肉豇豆摘要：Enantiomer paration is a critical step in many chemical synthes, particularly for pharmaceuticals, but prevailing chemical methods remain inefficient. Here, we introduce an optical technique to sort chiral specimens using coaxial plasmonic apertures. The apertures are compod of a deeply subwavelength silica channel embedded in silver and can stably trap sub-20 nm dielectric nanoparticles. Using both full-field simulations and analytic calculations, we show that lective trapping of enantiomers can be achieved with circularly polarized illumination. Opposite enantiomers experience distinct trapping forces in both sign and magnitude: one is trapped in a deep potential well,
while the other is repelled with a potential barrier. The potentials maintain opposite signs across a range of chiral
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