All-Dielectric Chiral Metasurfaces Based on Crossed-Bowtie Nanoantennas.

ABSTRACT: Circular dichroism spectroscopy is a technique used to discriminate molecular chirality, which is essential in fields like biology, chemistry, or pharmacology where different chiral agents often show different biological activities. Nevertheless, due to the inherently weak molecular-chiroptical activity, this technique is limited to high concentrations or large analyte volumes. Finding novel ways to enhance the circular dichroism would boost the performance of these techniques. So far, the enhancement of light-matter interaction mediated by plasmons is the most common way to develop chiral plasmonic structures with extraordinarily strong chiroptical responses. However, absorptive losses of metals at optical frequencies has hindered its practical use in many scenarios. In this work, we prop

SUBMITTER: Gomez FR 

PROVIDER: S-EPMC6921257 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature