Linked Life Data

15482983

Source:http://linkedlifedata.com/resource/pubmed/id/15482983

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1824
pubmed:dateCreated
2004-10-14
pubmed:abstractText
Exploiting the effect of surface-enhanced Raman scattering (SERS), the Raman signal of single-wall carbon nanotubes (SWNTs) can be enhanced by up to 14 orders of magnitude when the tubes are in contact with silver or gold nanostructures and Raman scattering takes place predominantly in the enhanced local optical fields of the nanostructures. Such a level of enhancement offers exciting opportunities for ultrasensitive Raman studies on SWNTs and allows resonant and non-resonant Raman experiments to be done on single SWNTs at relatively high signal levels. Since the optical fields are highly localized within so-called "hot spots" on fractal silver colloidal clusters, lateral confinement of the Raman scattering can be as small as 5 nm, allowing spectroscopic selection of a single nanotube from a larger population. Moreover, since SWNTs are very stable "artificial molecules" with a high aspect ratio and a strong electron-phonon coupling, they are unique "test molecules" for investigating the SERS effect itself and for probing the "electromagnetic field contribution" and "charge transfer contribution" to the effect. SERS is also a powerful tool for monitoring the "chemical" interaction between the nanotube and the metal nanostructure.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1364-503X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
362
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2361-73
pubmed:dateRevised
2009-4-16
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Surface-enhanced Raman scattering on single-wall carbon nanotubes.
pubmed:affiliation
Wellman Center for Photomedicine, Harvard Medical School, 40 Blossom Street, Boston, MA 02144, USA. kneipp@usa.net
pubmed:publicationType
Journal Article