The spectral fingerprint of a molecule when interacting with circularly polarized light reveals its chiral nature. This property is important for detection, identification, and quality control since the handedness of a molecule can critically influence its properties, such as the effectiveness of a drug. Molecular chiral properties can interact with plasmonic resonances. Here, we report a transfer of molecular chirality to collective lattice resonances of gold nanoparticle arrays. This transfer allows spectral control of the detected signal without having to rely on complex intrinsically chiral surface nanostructures and may facilitate the design of sensors based on the technology developed in POSEIDON.
Prof. Dr. rer. nat. Nicolas Vogel is Project Leader at Interdisciplinary Center for Functional Particle Systems (FPS) Friedrich-Alexander-Universität Erlangen Nürnberg. Javier Aizpurua, Professor at the Center for Materials Physics of the Spanish Council for Scientific Research (CSIC) and the University of the Basque Country (UPV/EHU) in Donostia-San Sebastián, the Basque Country.