Title :
Variability on the chiro-optical response of helically arranged metallic nanoparticles
Author :
Singh, Haobijam Johnson ; Ghosh, Ambarish
Author_Institution :
Dept. of Phys., Indian Inst. of Sci., Bangalore, India
Abstract :
We have studied the effects of geometrical variability on the chiro-optical response of helically arranged metal nanoparticles. A semi-analytical approach based on coupled dipole approximation model was used to study the effects of variation in shape, size, position, spacing and orientation of the metal nanoparticles. Within the extent of geometrical variability studied in our model, we found the chiro-optical response did not depend strongly on the size, position and spacing for either spherical or non spherical (ellipsoid) metal nanoparticles. On the other hand, the variability in the orientation of the ellipsoids can have significant effects on the chiro-optical response. These variability issues need to be taken into consideration in designing novel photonic polarization devices, as well as the optical system relevant for their investigation.
Keywords :
nanoparticles; particle size; chiro-optical response; coupled dipole approximation model; geometrical variability; helically arranged metal nanoparticles; metal nanoparticle orientation; metal nanoparticle position; metal nanoparticle shape; metal nanoparticle size; metal nanoparticle spacing; nonspherical ellipsoid metal nanoparticles; optical system; photonic polarization devices; semianalytical approach; spherical ellipsoid metal nanoparticles; Approximation methods; Metals; Nanoparticles; Optical device fabrication; Optical sensors; Plasmons; chiral metamaterials; chiro-optical response; coupled dipole model; process variability;
Conference_Titel :
Emerging Electronics (ICEE), 2014 IEEE 2nd International Conference on
Print_ISBN :
978-1-4673-6527-7
DOI :
10.1109/ICEmElec.2014.7151198
