Large Scale Plasmonic nanoCones array For Spectroscopy Detection

Handle URI:
http://hdl.handle.net/10754/578783
Title:
Large Scale Plasmonic nanoCones array For Spectroscopy Detection
Authors:
Das, Gobind ( 0000-0003-0942-681X ) ; Battista, Edmondo; Manzo, Gianluigi; Causa, Filippo; Netti, Paolo; Di Fabrizio, Enzo M. ( 0000-0001-5886-4678 )
Abstract:
Advanced optical materials or interfaces are gaining attention for diagnostic applications. However, the achievement of large device interface as well as facile surface functionalization largely impairs their wide use. The present work is aimed to address different innovative aspects related to the fabrication of large area 3D plasmonic arrays, their direct and easy functionalization with capture elements and their spectroscopic verifications through enhanced Raman and enhanced fluorescence techniques. In detail we have investigated the effect of Au-based nanoCones array, fabricated by means of direct nanoimprint technique over large area (mm2), on protein capturing and on the enhancement in optical signal. A selective functionalization of gold surfaces was proposed by using a peptide (AuPi3) previously selected by phage display. In this regard, two different sequences, labeled with fluorescein and biotin, were chemisorbed on metallic surfaces. The presence of Au nanoCones array consents an enhancement in electric field on the apex of cone, enabling the detection of molecules. We have witnessed around 12-fold increase in fluorescence intensity and SERS enhancement factor around 1.75 ×105 with respect to the flat gold surface. Furthermore, a sharp decrease in fluorescence lifetime over nanoCones confirms the increase in radiative emission (i.e. an increase in photonics density at the apex of cones).
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Large Scale Plasmonic nanoCones array For Spectroscopy Detection 2015:150924051021002 ACS Applied Materials & Interfaces
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
24-Sep-2015
DOI:
10.1021/acsami.5b06887
Type:
Article
Description:
Free access to the final publisher version of this article is available through the below ACS Articles on Request link: http://pubs.acs.org/articlesonrequest/AOR-yX58JrhNvzq5kftcUfGW
ISSN:
1944-8244; 1944-8252
Additional Links:
http://pubs.acs.org/doi/10.1021/acsami.5b06887; http://pubs.acs.org/articlesonrequest/AOR-yX58JrhNvzq5kftcUfGW
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorDas, Gobinden
dc.contributor.authorBattista, Edmondoen
dc.contributor.authorManzo, Gianluigien
dc.contributor.authorCausa, Filippoen
dc.contributor.authorNetti, Paoloen
dc.contributor.authorDi Fabrizio, Enzo M.en
dc.date.accessioned2015-09-28T14:00:07Zen
dc.date.available2015-09-28T14:00:07Zen
dc.date.issued2015-09-24en
dc.identifier.citationLarge Scale Plasmonic nanoCones array For Spectroscopy Detection 2015:150924051021002 ACS Applied Materials & Interfacesen
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.doi10.1021/acsami.5b06887en
dc.identifier.urihttp://hdl.handle.net/10754/578783en
dc.descriptionFree access to the final publisher version of this article is available through the below ACS Articles on Request link: http://pubs.acs.org/articlesonrequest/AOR-yX58JrhNvzq5kftcUfGWen
dc.description.abstractAdvanced optical materials or interfaces are gaining attention for diagnostic applications. However, the achievement of large device interface as well as facile surface functionalization largely impairs their wide use. The present work is aimed to address different innovative aspects related to the fabrication of large area 3D plasmonic arrays, their direct and easy functionalization with capture elements and their spectroscopic verifications through enhanced Raman and enhanced fluorescence techniques. In detail we have investigated the effect of Au-based nanoCones array, fabricated by means of direct nanoimprint technique over large area (mm2), on protein capturing and on the enhancement in optical signal. A selective functionalization of gold surfaces was proposed by using a peptide (AuPi3) previously selected by phage display. In this regard, two different sequences, labeled with fluorescein and biotin, were chemisorbed on metallic surfaces. The presence of Au nanoCones array consents an enhancement in electric field on the apex of cone, enabling the detection of molecules. We have witnessed around 12-fold increase in fluorescence intensity and SERS enhancement factor around 1.75 ×105 with respect to the flat gold surface. Furthermore, a sharp decrease in fluorescence lifetime over nanoCones confirms the increase in radiative emission (i.e. an increase in photonics density at the apex of cones).en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acsami.5b06887en
dc.relation.urlhttp://pubs.acs.org/articlesonrequest/AOR-yX58JrhNvzq5kftcUfGWen
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acsami.5b06887.en
dc.titleLarge Scale Plasmonic nanoCones array For Spectroscopy Detectionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.eprint.versionPost-printen
dc.contributor.institutionNanostructures, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italyen
dc.contributor.institutionCABHC, IIT@CRIB, Istituto Italiano di Tecnologia, L.go Barsanti e Matteucci 53, 80125, Napoli, Italyen
dc.contributor.institutionInterdisciplinary Research Center on Biomaterials (CRIB), University Federico II, P.le Tecchio 80, Napoli, Italyen
dc.contributor.institutionDepartment of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italyen
dc.contributor.institutionLab BioNEM, Università Magna Graecia di Catanzaro, Viale Europa, 81000, Catanzaro, Italyen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorDas, Gobinden
kaust.authorDi Fabrizio, Enzo M.en
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