A chiral near-field with a highly contorted electromagnetic field builds a bridge to match chiral molecules and light wavelengths with large size differences. It significantly enhances the circular dichroism of chiral molecules and has great prospects in chirality sensing, detection, trapping, and other chirality-related applications. Surface plasmons feature outstanding light-trapping and electromagnetic-field-concentrating abilities. Plasmonic chiral nanostructures facilitate light manipulation to generate superchiral near-fields. Meanwhile, the nanophotonic structures have attracted significant interest to obtain strong chiral near-fields due to their unique electromagnetic resonant properties. During the interaction of light and chiral materials, the chiral near-field not only bridges the light and chiral molecules but is also responsible for the optical activities. This paper reviews state-of-the-art studies on generating or enhancing chiral near-fields using plasmonic and photonic nanostructures. The principle of chiral near-fields and the development of chiral near-fields with plasmonic and photonic nanostructures are reviewed. The properties and applications of enhanced chiral near-fields for chiral molecule detection, spin-orbit angular interaction, and the generation of the chiral optical force are examined. Finally, current challenges are discussed and a brief outlook of this field is provided.

中文翻译：

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手性近场的等离子体和光子增强

具有高度扭曲电磁场的手性近场建立了一座桥梁，以匹配具有较大尺寸差异的手性分子和光波长。它显着增强了手性分子的圆二色性，在手性传感、检测、捕获和其他手性相关应用方面具有广阔的应用前景。表面等离子体激元具有出色的光捕获和电磁场集中能力。等离子体手性纳米结构有助于光操纵以产生超手性近场。同时，由于其独特的电磁共振特性，纳米光子结构在获得强手性近场方面引起了人们的极大兴趣。在光与手性物质的相互作用过程中，手性近场不仅连接光和手性分子，而且还负责光学活动。本文回顾了使用等离子体和光子纳米结构产生或增强手性近场的最新研究。综述了手性近场的原理以及等离子体和光子纳米结构手性近场的发展。研究了增强手性近场在手性分子检测、自旋轨道角相互作用和手性光学力产生方面的特性和应用。最后，讨论了当前的挑战，并提供了该领域的简要展望。综述了手性近场的原理以及等离子体和光子纳米结构手性近场的发展。研究了增强手性近场在手性分子检测、自旋轨道角相互作用和手性光学力产生方面的特性和应用。最后，讨论了当前的挑战，并提供了该领域的简要展望。综述了手性近场的原理以及等离子体和光子纳米结构手性近场的发展。研究了增强手性近场在手性分子检测、自旋轨道角相互作用和手性光学力产生方面的特性和应用。最后，讨论了当前的挑战，并提供了该领域的简要展望。