Electroless formation of silver nanoaggregates: An experimental and molecular dynamics approach

Handle URI:
http://hdl.handle.net/10754/563401
Title:
Electroless formation of silver nanoaggregates: An experimental and molecular dynamics approach
Authors:
Gentile, Francesco T.; Monteferrante, Michele; Chiodo, Letizia; Toma, Andrea; Coluccio, Maria Laura; Ciccotti, Giovanni; Di Fabrizio, Enzo M. ( 0000-0001-5886-4678 )
Abstract:
The ability to manipulate matter to create non-conventional structures is one of the key issues of material science. The understanding of assembling mechanism at the nanoscale allows us to engineer new nanomaterials, with physical properties intimately depending on their structure.This paper describes new strategies to obtain and characterise metal nanostructures via the combination of a top-down method, such as electron beam lithography, and a bottom-up technique, such as the chemical electroless deposition. We realised silver nanoparticle aggregates within well-defined patterned holes created by electron beam lithography on silicon substrates. The quality characteristics of the nanoaggregates were verified by using scanning electron microscopy and atomic force microscopy imaging. Moreover, we compared the experimental findings to molecular dynamics simulations of nanoparticles growth. We observed a very high dependence of the structure characteristics on the pattern nanowell aspect ratio. We found that high-quality metal nanostructures may be obtained in patterns with well aspect ratio close to one, corresponding to a maximum diameter of 50 nm, a limit above which the fabricated structures become less regular and discontinuous. When regular shapes and sizes are necessary, as in nanophotonics, these results suggest the pattern characteristics to obtain isolated, uniform and reproducible metal nanospheres. © 2014 Taylor & Francis.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
Informa UK Limited
Journal:
Molecular Physics
Issue Date:
20-Feb-2014
DOI:
10.1080/00268976.2014.902518
Type:
Article
ISSN:
00268976
Sponsors:
This work was supported by the EU Commission, the European Social Fund and the Calabria Region under Grant POR Calabria FSE 2007-2013; Italian Minister of Health [grant number GR-2010-2320665]; IIT SEED project 'SIMBEDD'; SFI [grant number 08-IN.1-I1869]; CASPUR-CINECA under Grant IscraB_SNaMT.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorGentile, Francesco T.en
dc.contributor.authorMonteferrante, Micheleen
dc.contributor.authorChiodo, Letiziaen
dc.contributor.authorToma, Andreaen
dc.contributor.authorColuccio, Maria Lauraen
dc.contributor.authorCiccotti, Giovannien
dc.contributor.authorDi Fabrizio, Enzo M.en
dc.date.accessioned2015-08-03T11:47:39Zen
dc.date.available2015-08-03T11:47:39Zen
dc.date.issued2014-02-20en
dc.identifier.issn00268976en
dc.identifier.doi10.1080/00268976.2014.902518en
dc.identifier.urihttp://hdl.handle.net/10754/563401en
dc.description.abstractThe ability to manipulate matter to create non-conventional structures is one of the key issues of material science. The understanding of assembling mechanism at the nanoscale allows us to engineer new nanomaterials, with physical properties intimately depending on their structure.This paper describes new strategies to obtain and characterise metal nanostructures via the combination of a top-down method, such as electron beam lithography, and a bottom-up technique, such as the chemical electroless deposition. We realised silver nanoparticle aggregates within well-defined patterned holes created by electron beam lithography on silicon substrates. The quality characteristics of the nanoaggregates were verified by using scanning electron microscopy and atomic force microscopy imaging. Moreover, we compared the experimental findings to molecular dynamics simulations of nanoparticles growth. We observed a very high dependence of the structure characteristics on the pattern nanowell aspect ratio. We found that high-quality metal nanostructures may be obtained in patterns with well aspect ratio close to one, corresponding to a maximum diameter of 50 nm, a limit above which the fabricated structures become less regular and discontinuous. When regular shapes and sizes are necessary, as in nanophotonics, these results suggest the pattern characteristics to obtain isolated, uniform and reproducible metal nanospheres. © 2014 Taylor & Francis.en
dc.description.sponsorshipThis work was supported by the EU Commission, the European Social Fund and the Calabria Region under Grant POR Calabria FSE 2007-2013; Italian Minister of Health [grant number GR-2010-2320665]; IIT SEED project 'SIMBEDD'; SFI [grant number 08-IN.1-I1869]; CASPUR-CINECA under Grant IscraB_SNaMT.en
dc.publisherInforma UK Limiteden
dc.subjectElectroless depositionen
dc.subjectMetal nanoparticlesen
dc.subjectMolecular dynamics simulationsen
dc.subjectNanoscale systemsen
dc.subjectSuperclustersen
dc.titleElectroless formation of silver nanoaggregates: An experimental and molecular dynamics approachen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalMolecular Physicsen
dc.contributor.institutionBioNEM (Bio Nano Engineering and Technology for Medicine), Department of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italyen
dc.contributor.institutionDepartment of Nanostructures, Istituto Italiano di Tecnologia, Genova, Italyen
dc.contributor.institutionConsiglio Nazionale Delle Ricerche, Istituto di Chimica Del Riconoscimento Molecolare (ICRM), Milan, Italyen
dc.contributor.institutionCenter for Life Nano Science atSapienza, Istituto Italiano di Tecnologia, Rome, Italyen
dc.contributor.institutionDepartment of Physics, University of Rome la Sapienza, Rome, Italyen
kaust.authorDi Fabrizio, Enzo M.en
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