Optical chirality enhancement in twisted metamaterials

An important property of electromagnetic fields which is partly responsible for the interaction between fields and chiral medium is called optical chirality. By enhancing this field property while maintaining constant input power, we are able to increase absorption of circularly polarized light by chiral molecules of a certain handedness. This enhancement is achieved through the use of plasmonic nano-particles in conjunction with twisted metamaterials. Optical chirality enhancement (OCE) has an important application in sensing enantiomers of chiral molecules. Here we present a preliminary scheme to measure enantiomeric excess in mixtures of chiral molecules using OCE boosted by twisted metamaterials.