Materials and Results (IMAGE) Kobe University Caption (a) Photographs of colloidal Si nanoparticles in water with different diameters. (b, d) Schematics of scattering of circularly polarized light in "non-dual" (b) and "dual" (d) nanoparticles. (c, e) Calculated and measured helicity density spectra of Au (c) and Si (e) nanoparticles. Credit Reprinted with permission from Nano Letters, 2023, DOI: 10.1021/acs.nanolett.3c01026. Usage Restrictions Attribution required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.