Publication Details:

Established in 2008

Journal or Publication Title:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Date of publication:

2018

Volume:

11

Number:

4

ISSN:

1829-1171

Official URL:

Corporate Creators:

Yerevan State University (YSU)

Coverage:

241-245

Abstract:

The localized surface plasmon resonance (LSPR) of gold and silver spherical and cubic nanoparticles (NP), as well as NP dimers is studied. We use numerical simulations based on finite element method to derive extinction cross sections (ECS) and LSPR wavelengths of the investigated structures. Study of the dependence of the LSPR of the cubic NPs on the different values of chamfering radius shows the red shift of the resonant wavelength while decreasing the chamfering radius. For the silver nanocube the analysis suggests three extinction peaks on ~333 nm, ~364 nm due to strong absorption and on ~400 nm due to scattering, while for gold nanocube there is only one extinction peak on ~526 nm. The diameter of the spheres and the sides of the cubes is 50 nm. According to the simulations the localized surface plasmon properties of the silver nanoparticles are much stronger and more diverse than that of corresponding gold nanoparticles. The study of nanocube and nanosphere dimers is carried out as well.

Date created:

2018-12-28

Format:

pdf

Identifier:

oai:arar.sci.am:23547

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան