Open AccessTuning spontaneous radiation of chiral molecules by asymmetric chiral nanoparticles
Author(s) -
Д. В. Гузатов,
В. В. Климов,
Hsun-Chi Chan,
GuangYu Guo
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.006036
Subject(s) - chirality (physics) , nanoparticle , radiative transfer , molecule , metamaterial , materials science , homochirality , isotropy , shell (structure) , dielectric , molecular physics , spontaneous emission , enantiomer , chemical physics , physics , optics , nanotechnology , composite material , laser , chiral anomaly , optoelectronics , fermion , stereochemistry , chemistry , nambu–jona lasinio model , quantum mechanics
We have obtained analytical expressions for the radiative decay rate of the spontaneous emission of a chiral molecule located near a dielectric spherical particle with a chiral nonconcentric spherical shell made of a bi-isotropic material. Our numerical and graphical analyses show that material composition, thickness and degree of non-concentricity of the shell can influence significantly the spontaneous radiation of the chiral molecule. In particular, the radiative decay rates can differ in orders of magnitude for a chiral molecule located near the thin and thick parts of a nonconcentric shell as well as near a concentric shell made of chiral metamaterial. We also find that the radiative decay rates of the "right" and "left" chiral molecule enantiomers located near a nanoparticle with a chiral metamaterial shell can differ pronouncedly from each other. Our findings therefore suggest a way to tune the spontaneous emission of chiral molecules by varying the material composition, thickness and degree of non-concentricity of the shell in the nearby composite nanoparticle and also to enhance the chirality selection of chiral molecules in racemic mixtures.