The CD of Silver helices within Milli-Q water is measured at discrete frequencies from far infrared to the optical band. The em-chirality of the helices is optimized with JCMsuite by combining the shape derivatives for the T-matrices with the Bayesian optimization algorithm.
X. Garcia-Santiago, et al. Toward Maximally Electromagnetically Chiral Scatterers at OpticalFrequencies. ACS Photonics 9, 1954 (2022).