Linked Life Data

20936794

Source:http://linkedlifedata.com/resource/pubmed/id/20936794

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2010-11-24
pubmed:abstractText
Perfect vertically aligned and periodically arranged arrays of multidielectric heterostructures are ideal platforms both for photonic crystals and photonic bandgap materials. Carbon nanotubes grown inside anodic alumina templates form a novel class of heterostructured materials ideally suited for building such platforms. By engineering metallic (cobalt) nanoclusters inside the nanotubes, we present a novel method for tailoring the photonic bandgap as well as the magnitude of the reflectivity in these systems. We present spectroscopic ellipsometry (SE) and reflectivity measurements to investigate the effect of the presence of cobalt clusters on the optical response of multiwall carbon nanotubes (MWNT) grown in anodized alumina template. The real (?(1)) and imaginary (?(2)) part of the pseudodielectric function of the MWNT and Co-MWNT system have been studied in a wide energy range (1.4-5 eV). We found that the cobalt filling modifies the electronic structure of the nanotubes, suggesting that the insertion of the clusters leads to a semiconductor behavior. Angle-resolved reflectivity measurements further show that the metal filling drastically enhances the optical response up to 2 orders of magnitude.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Nov
pubmed:issn
1936-086X
pubmed:author
pubmed:issnType
Electronic
pubmed:day
23
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6573-8
pubmed:year
2010
pubmed:articleTitle
Cobalt nanocluster-filled carbon nanotube arrays: engineered photonic bandgap and optical reflectivity.
pubmed:affiliation
CEMES, Centre d'Elaboration de Mate?riaux et d'Etudes Structurales, CNRS UPR 8011 29 rue Jeanne Marvig, Toulouse, France.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't