Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T17:23:30.675Z Has data issue: false hasContentIssue false
  • English
  • Français

Nanotube Crossbar Array via Microcontact Printing for Biomolecule Detection

Published online by Cambridge University Press:  31 January 2011

Shalini Prasad
Shalini Prasad*
Affiliation:
[email protected], Arizona State University, ECEE, Tempe, Arizona, United States
Get access

Abstract

The paper describes the fabrication and characterization of an ionic junction nanodevice as a biosensor using surfactant coated single walled carbon nanotubes (SWCNT's) via microcontact printing and its application in detecting standard protein biomolecules ( biotin-avidin). Intrinsic semiconducting SWCNT's are doped with anionic and cationic surfactant molecules respectively. Using double patterning process, these ionically doped anionic and cationic semiconducting SWCNT's are alternatively symmetrically patterned in a parallel array to form crossbar junctions onto base microelectrode arrays using flexible polymeric poly-dimethylsiloxane (PDMS) stamps. Parallel alignment of SWCNT's is achieved, due to transfer of the inked SWCNT's from the PDMS relief structure onto the microelectrode array. Base microcontacts on the microelectrode array serve as a platform for measuring electrical characteristics that get modulated due to the biomolecule binding. Functionality of the nanodevice is demonstrated by measuring impedance changes due to biomolecule binding. The modulation of the electrical behavior indicates the existence of potential for using ionically doped nanomaterial systems in fabricating functional building blocks for biosensors.

Keywords

sensorbiologicaldevices
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1204: Symposium K – Nanotubes and Related Nanostructures-2009 , 2009 , 1204-K14-28
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Claussen, J. C., Franklin, A. D., Haque, A., Porterfield, D. M. and Fisher, T. S., ACS Nano 3, 37–44 (2009)Google Scholar
2. Bakker, E. and Qin, Y., Electrochemical Sensors Anal. Chem. 78, 3965–3984 (2006)Google Scholar
3. Tasis, D., Tagmatarchis, N., Bianco, A., and Prato, M., Chem. Rev. 106, 1105–1136 (2006)Google Scholar
4. McCreery, R. L., Chem. Rev. 108, 2646–2687 (2008)Google Scholar
5. He, P. and Dai, L., “Carbon Nanotube Biosensors,” BioMEMS and Biomedical Nanotechnology, ed. Ferrari, M., 420–428 (Springer 2006)Google Scholar
6. Vaseashta, A. and Malinovska, D. D., Science and Technology of Advanced Materials 6, 312–318 (2008)Google Scholar
7. Camponeschi, E.L., “Dispersion and alignment of carbon nanotubes in polymer based composites,” PhD Dissertation, Georgia Institute of Technology, (2007)Google Scholar