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001-es BibID:	BIBFORM106838
035-os BibID:	(WoS)000794958500002 (Scopus)85127883556
Első szerző:	Szántó Géza (fizikus)
Cím:	Dimers of gold-silver core-shell nanospheres: The effect of interparticle gap on the refractive index sensitivity and extinction spectrum / Géza Szántó, Attila Bonyár, István Csarnovics
Dátum:	2022
ISSN:	1569-4410 1569-4429
Megjegyzések:	Gold-silver and silver-gold core-shell nanoparticle dimers were studied based on their extinction cross-section spectrum and bulk refractive index sensitivity. The simulations were performed by using the boundary element method (BEM) and the polarization direction of the used plane-wave excitation was parallel with the symmetry axis. The running parameters were the particles' outer and inner radii and their (interparticle gap/full diameter). For different particle sizes and distances, the shape of the spectra and the refractive index sensitivities are presented. In the extinction spectra, the observable peaks originate from either the gold or silver components and the most intense peak position can be distinctly assigned to one of them. A sharp boundary separates these two regions in the plane of the core radius and shell thickness parameters. It was found that by decreasing the interparticle gap, the boundary line between these two regions shifts towards the thinner shells for Ag@Au dimers, while it shifts towards the smaller cores for Au@Ag dimers. Since the sensitivity of peaks corresponding to the Au and Ag components are significantly different, the presented data can help optimize interparticle gaps concerning the core/shell thicknesses to maximize the sensitivity of nanoparticle dimers.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Plasmonics Nanoparticle dimer Core-shell bimetallic nanoparticle Refractive index sensitivity Localized surface plasmon resonance Boundary element method
Megjelenés:	Photonics and Nanostructures-Fundamentals and Applications. - 50 (2022), p. 101023-. -
További szerzők:	Bonyár Attila Csarnovics István (1986-) (fizikus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00041 GINOP BO/348/20 MTA EFOP-3.6.2-16-2017-00005 EFOP ÚNKP-21-5-DE-164 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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