Assessment and Optimization of Chiroptical Activity in Au-TiO2 Nanostructures

Here, we report the simulation treatment of circular dichroism (CD) enhancement, and then, propose a nanohole array structure as a suitable system to test and benchmark the measurements identified and fabricated using Electron Beam Lithography (EBL) and thermal evaporating. Then, optical properties are discussed using CD spectroscopy configuration. We aim to derive the functional dependence of the CD on background-chiroptical parameters, substrate thickness, and chirality. Having derived the dependencies, we extend this analysis by embedding a chiral biolayer on top of the nanostructure.