Հրապարակման մանրամասներ:
Ամսագրի կամ հրապարակման վերնագիր:
Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
Հրապարակման ամսաթիվ:
Հատոր:
Համար:
ISSN:
Պաշտոնական URL:
Վերնագիր:
Plasmonic Nanoparticles Arrangements for Biosensing
Ստեղծողը:
H. Parsamyan ; T. S. Yezekyan ; H. Haroyan
Համատեղ հեղինակները:
Yerevan State University (YSU)
Խորագիր:
Physics ; Electronic structure and electrical properties of surfaces ; Instruments, apparatus, components common to several branches of physics
Ծածկույթ:
Ամփոփում:
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.