Figure 2: Measurements and simulations of an enantiomeric pair of metamaterials.
From: Chirality detection of enantiomers using twisted optical metamaterials
(a) Scanning electron microscope image and illustration of the +60° metamaterial. (b) Experimentally measured transmission (left y axis) of the twisted metamaterial with RCP (red curve) and LCP (black curve) excitation, and its extracted circular dichroism (CD) in degrees (blue curve, right y axis). The error bars correspond to the standard deviation of three measurements at different locations of the metamaterials. (c) Corresponding numerical simulations of the background transmission and circular dichroism for the +60° metamaterial. (d–f) Figures for the −60° metamaterial. All scale bars are 500 nm. Within the unit cell, each nanorod is 220 nm × 50 nm × 40 nm; the square lattice has a dimension of 300 nm × 300 nm.
