Plasmonic 3D-structures based on silver decorated nanotips for biological sensing

Handle URI:
http://hdl.handle.net/10754/566148
Title:
Plasmonic 3D-structures based on silver decorated nanotips for biological sensing
Authors:
Coluccio, M. L.; Francardi, Marco; Gentile, F.; Candeloro, P.; Ferrara, L.; Perozziello, G.; Di Fabrizio, Enzo M. ( 0000-0001-5886-4678 )
Abstract:
Recent progresses in nanotechnology fabrication gives the opportunity to build highly functional nano-devices. 3D structures based on noble metals or covered by them can be realized down to the nano-scales, obtaining different devices with the functionalities of plasmonic nano-lenses or nano-probes. Here, nano-cones decorated with silver nano-grains were fabricated using advanced nano-fabrication techniques. In fabricating the cones, the angle of the apex was varied over a significant range and, in doing so, different geometries were realized. In depositing the silver nano-particles, the concentration of solution was varied, whereby different growth conditions were realized. The combined effect of tip geometry and growth conditions influences the size and distribution of the silver nano grains. The tips have the ability to guide or control the growth of the grains, in the sense that the nano-particles would preferentially distribute along the cone, and especially at the apex of the cone, with no o minor concentration effects on the substrate. The arrangement of metallic nano-particles into three-dimensional (3D) structures results in a Surface Enhanced Raman Spectroscopy (SERS) device with improved interface with analytes compared to bi-dimensional arrays of metallic nanoparticles. In the future, similar devices may find application in microfluidic devices, and in general in flow chambers, where the system can be inserted as to mimic a a nano-bait, for the recognition of specific biomarkers, or the manipulation and chemical investigation of single cells directly in native environments with good sensitivity, repeatability and selectivity. © 2015 Elsevier Ltd.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
Optics and Lasers in Engineering
Issue Date:
May-2015
DOI:
10.1016/j.optlaseng.2015.04.020
Type:
Article
ISSN:
01438166
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorColuccio, M. L.en
dc.contributor.authorFrancardi, Marcoen
dc.contributor.authorGentile, F.en
dc.contributor.authorCandeloro, P.en
dc.contributor.authorFerrara, L.en
dc.contributor.authorPerozziello, G.en
dc.contributor.authorDi Fabrizio, Enzo M.en
dc.date.accessioned2015-08-12T09:30:06Zen
dc.date.available2015-08-12T09:30:06Zen
dc.date.issued2015-05en
dc.identifier.issn01438166en
dc.identifier.doi10.1016/j.optlaseng.2015.04.020en
dc.identifier.urihttp://hdl.handle.net/10754/566148en
dc.description.abstractRecent progresses in nanotechnology fabrication gives the opportunity to build highly functional nano-devices. 3D structures based on noble metals or covered by them can be realized down to the nano-scales, obtaining different devices with the functionalities of plasmonic nano-lenses or nano-probes. Here, nano-cones decorated with silver nano-grains were fabricated using advanced nano-fabrication techniques. In fabricating the cones, the angle of the apex was varied over a significant range and, in doing so, different geometries were realized. In depositing the silver nano-particles, the concentration of solution was varied, whereby different growth conditions were realized. The combined effect of tip geometry and growth conditions influences the size and distribution of the silver nano grains. The tips have the ability to guide or control the growth of the grains, in the sense that the nano-particles would preferentially distribute along the cone, and especially at the apex of the cone, with no o minor concentration effects on the substrate. The arrangement of metallic nano-particles into three-dimensional (3D) structures results in a Surface Enhanced Raman Spectroscopy (SERS) device with improved interface with analytes compared to bi-dimensional arrays of metallic nanoparticles. In the future, similar devices may find application in microfluidic devices, and in general in flow chambers, where the system can be inserted as to mimic a a nano-bait, for the recognition of specific biomarkers, or the manipulation and chemical investigation of single cells directly in native environments with good sensitivity, repeatability and selectivity. © 2015 Elsevier Ltd.en
dc.publisherElsevier BVen
dc.subjectE-Beam Induced Depositionen
dc.subjectElectroless depositionen
dc.subjectLocalization controlen
dc.subjectSERSen
dc.subjectSilver nanoparticlesen
dc.titlePlasmonic 3D-structures based on silver decorated nanotips for biological sensingen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalOptics and Lasers in Engineeringen
dc.contributor.institutionBioNEM, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italyen
dc.contributor.institutionIstituto Italiano di Tecnologia. Via Morego, 30 16163 Genova, Italyen
dc.contributor.institutionDepartment of Electrical Engineering and Information Technology, University of Naples, 80125 Naples, Italyen
kaust.authorFrancardi, Marcoen
kaust.authorDi Fabrizio, Enzo M.en
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