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Plasmonic Nanoparticles and Nanowires: Design, Fabrication and Application in Sensing.

dc.contributor.author Vo-Dinh, T
dc.contributor.author Dhawan, A
dc.contributor.author Norton, SJ
dc.contributor.author Khoury, CG
dc.contributor.author Wang, HN
dc.contributor.author Misra, V
dc.contributor.author Gerhold, MD
dc.coverage.spatial United States
dc.date.accessioned 2011-06-21T17:26:41Z
dc.date.issued 2010-04-29
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/24839505
dc.identifier.issn 1932-7447
dc.identifier.uri http://hdl.handle.net/10161/4077
dc.description.abstract This study involves two aspects of our investigations of plasmonics-active systems: (i) theoretical and simulation studies and (ii) experimental fabrication of plasmonics-active nanostructures. Two types of nanostructures are selected as the model systems for their unique plasmonics properties: (1) nanoparticles and (2) nanowires on substrate. Special focus is devoted to regions where the electromagnetic field is strongly concentrated by the metallic nanostructures or between nanostructures. The theoretical investigations deal with dimers of nanoparticles and nanoshells using a semi-analytical method based on a multipole expansion (ME) and the finite-element method (FEM) in order to determine the electromagnetic enhancement, especially at the interface areas of two adjacent nanoparticles. The experimental study involves the design of plasmonics-active nanowire arrays on substrates that can provide efficient electromagnetic enhancement in regions around and between the nanostructures. Fabrication of these nanowire structures over large chip-scale areas (from a few millimeters to a few centimeters) as well as FDTD simulations to estimate the EM fields between the nanowires are described. The application of these nanowire chips using surface-enhanced Raman scattering (SERS) for detection of chemicals and labeled DNA molecules is described to illustrate the potential of the plasmonics chips for sensing.
dc.language eng
dc.language.iso en_US
dc.relation.ispartof J Phys Chem C Nanomater Interfaces
dc.relation.isversionof 10.1021/jp911355q
dc.subject Plasmonics
dc.subject SERS
dc.subject gene diagnostics
dc.subject metallic nanostructures
dc.subject molecular sentinel
dc.subject nanoprobes
dc.subject surface-enhanced Raman scattering
dc.title Plasmonic Nanoparticles and Nanowires: Design, Fabrication and Application in Sensing.
dc.title.alternative
dc.type Journal article
dc.description.version Version of Record
duke.date.pubdate 2010-4-29
duke.description.issue 16
duke.description.volume 114
dc.relation.journal Journal of Physical Chemistry C
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/24839505
pubs.begin-page 7480
pubs.end-page 7488
pubs.issue 16
pubs.organisational-group Biomedical Engineering
pubs.organisational-group Chemistry
pubs.organisational-group Duke
pubs.organisational-group Duke Cancer Institute
pubs.organisational-group Institutes and Centers
pubs.organisational-group Pratt School of Engineering
pubs.organisational-group School of Medicine
pubs.organisational-group Trinity College of Arts & Sciences
pubs.publication-status Published
pubs.volume 114


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