Carbon nanotube electrodes for electrochemiluminescence biosensors

Author

Sanginario, A. ; Demarchi, D. ; Giorcelli, M. ; Castellino, M.

Author_Institution

Electron. Dept., Politec. di Torino, Torino, Italy

Volume

01

fYear

2010

fDate

11-13 Oct. 2010

Firstpage

195

Lastpage

198

Abstract

The present application is based on the use of carbon nanotubes (CNTs) for biomolecular analysis using electrochemiluminescence (ECL) detection technique [1]-[9]. For this purpose we have grown self standing blocks of multi-wall CNTs (MWCNTs). The blocks were subsequently back-contacted and encapsulated into epoxy resin for their use as voltammetric electrodes. A ruthenium-complex solution has been used as ECL label. It has been observed a periodical light emission that lasts for hundreds of cycles, likely due to the CNTs structure. Thanks to a dataprocessing algorithm which exploits this behaviour, the experiments show that it is possible to obtain a great increase in detection limit.

Keywords

biosensors; carbon nanotubes; electrochemical electrodes; electrochemical sensors; electroluminescence; voltammetry (chemical analysis); ECL detection technique; MWCNT; biomolecular analysis; carbon nanotube electrode; data processing algorithm; electrochemiluminescence biosensor; multiwall CNT; periodical light emission; ruthenium-complex solution; voltammetric electrode; Carbon nanotubes; Chemicals; DNA; Electrodes; Gold; Noise; Silicon; ECL; biosensor; carbon nanotubes;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2010 International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4244-5783-0

Type

conf

DOI

10.1109/SMICND.2010.5649091

Filename

5649091