Nanoresonant signal boosters for carbon nanotube based infrared detectors.
Nanotechnology
; 20(18): 185201, 2009 May 06.
Article
em En
| MEDLINE
| ID: mdl-19420605
ABSTRACT
We report the development of a sensitive carbon nanotube (CNT) infrared detector whose signals are boosted by nanoantenna-like features. This assembly is fabricated using nanoassembly of CNTs and a standard photolithographic process, together with nanoantenna-like features that are designed to create a resonance structure necessary to boost the electric field intensity at the CNT sensor. A novel approach is employed to find the near-field effect of the antenna. As a result, these effects are verified and demonstrated experimentally in this paper. The first experimental demonstration of a practical infrared device with nanoantenna-like structures is reported; it shows that the photocurrent is increased by an order of magnitude. The proposed fabrication and design process enables a ready integration of resonance structures into the manufacture of infrared devices, and opens the possibility of developing high fidelity infrared sensors with wide sensing range.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fotometria
/
Transdutores
/
Nanotecnologia
/
Nanotubos de Carbono
/
Nanoestruturas
Tipo de estudo:
Evaluation_studies
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article