Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays

Panagopoulou, M; Pantiskos, N; Photopoulos, P; Tang, J; Tsoukalas, D; Raptis, YS

dc.contributor.author	Panagopoulou, M	en
dc.contributor.author	Pantiskos, N	en
dc.contributor.author	Photopoulos, P	en
dc.contributor.author	Tang, J	en
dc.contributor.author	Tsoukalas, D	en
dc.contributor.author	Raptis, YS	en
dc.date.accessioned	2014-03-01T02:03:10Z
dc.date.available	2014-03-01T02:03:10Z
dc.date.issued	2011	en
dc.identifier.issn	19317573	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29359
dc.subject	Nanotechnology (design-applications)	en
dc.subject	R6g	en
dc.subject	Raman spectra	en
dc.subject	Self-aligned silver nanoparticles	en
dc.subject	Sers	en
dc.subject.other	Ag nanoparticle	en
dc.subject.other	Gas aggregation	en
dc.subject.other	Grating structures	en
dc.subject.other	Hotspots	en
dc.subject.other	Line arrays	en
dc.subject.other	Metallic nanoparticles	en
dc.subject.other	Optimal growth	en
dc.subject.other	Polarization direction	en
dc.subject.other	R6g	en
dc.subject.other	Raman enhancement	en
dc.subject.other	Randomly distributed	en
dc.subject.other	Self-aligned	en
dc.subject.other	Self-assembled	en
dc.subject.other	Sers	en
dc.subject.other	Sharp features	en
dc.subject.other	Silver nanoparticles	en
dc.subject.other	Spectroscopic features	en
dc.subject.other	Surface-enhanced Raman scattering	en
dc.subject.other	Inert gases	en
dc.subject.other	Lithography	en
dc.subject.other	Nanoparticles	en
dc.subject.other	Nanowires	en
dc.subject.other	Raman scattering	en
dc.subject.other	Silver	en
dc.title	Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays	en
heal.type	journalArticle	en
heal.identifier.primary	10.1186/1556-276X-6-629	en
heal.identifier.secondary	http://dx.doi.org/10.1186/1556-276X-6-629	en
heal.identifier.secondary	629	en
heal.publicationDate	2011	en
heal.abstract	This work reports on Raman scattering of rhodamine (R6G) molecules absorbed on either randomly distributed or grating-like arrays of approximately 8-nm Ag nanoparticles developed by inert gas aggregation. Optimal growth and surface-enhanced Raman scattering (SERS) parameters have been obtained for the randomly distributed nanoparticles, while effects related to the aging of the silver nanoparticles were studied. Grating-like arrays of nanoparticles have been fabricated using line arrays templates formed either by fracture-induced structuring or by standard lithographic techniques. Grating structures fabricated by both methods exhibit an enhancement of the SERS signal, in comparison to the corresponding signal from randomly distributed Ag nanoparticles, as well as a preferential enhancement in the areas of the sharp features, and a dependence on the polarization direction of the incident exciting laser beam, with respect to the orientation of the gratings structuring. The observed spectroscopic features are consistent with a line-arrangement of hot-spots due to the self- alignment of metallic nanoparticles, induced by the grating-like templates. © 2011 Panagopoulou et al.	en
heal.journalName	Nanoscale Research Letters	en
dc.identifier.doi	10.1186/1556-276X-6-629	en
dc.identifier.volume	6	en
dc.identifier.spage	1	en
dc.identifier.epage	22	en