This study developed a multi-scale computational approach to disentangle the contributions of geometry and material chirality to the circular dichroism (CD) of chiral objects. The researchers used JCMsuite to perform full-wave finite element simulations, extracting transition matrices to compute the optical response of objects like helices and tetrahedral sphere arrangements. This enabled the separation of CD into geometry- and material-dependent parts, showing that their linear superposition accurately predicts total CD, even for resonant systems.
L. Rebholz, et al. Separating the Material and Geometry Contribution to the Circular Dichroism of Chiral Objects Made from Chiral Media. ACS Photonics. 11, 1171-1179 (2024).