Role of defects in single-walled carbon nanotube chemical sensors.
Nano Lett
; 6(8): 1747-51, 2006 Aug.
Article
em En
| MEDLINE
| ID: mdl-16895367
ABSTRACT
We explore the electronic response of single-walled carbon nanotubes (SWNT) to trace levels of chemical vapors. We find adsorption at defect sites produces a large electronic response that dominates the SWNT capacitance and conductance sensitivity. This large response results from increased adsorbate binding energy and charge transfer at defect sites. Finally, we demonstrate controlled introduction of oxidation defects can be used to enhance sensitivity of a SWNT network sensor to a variety of chemical vapors.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Orgânicos
/
Transdutores
/
Modelos Moleculares
/
Nanotubos de Carbono
/
Eletroquímica
/
Gases
/
Modelos Químicos
Idioma:
En
Revista:
Nano Lett
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Estados Unidos