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  4. Comparing the enhanced sensing interfaces of differently oriented carbon nanotubes onto silicon for bio-chip applications
 
conference paper

Comparing the enhanced sensing interfaces of differently oriented carbon nanotubes onto silicon for bio-chip applications

Taurino, Irene  
•
Carrara, Sandro  
•
Giorcelli, Mauro
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2011
Proceedings of the 4th International Workshop on Advances in Sensors and Interfaces (IWASI)
4th International Workshop on Advances in Sensors and Interfaces (IWASI)

Carbon nanotubes improve the sensitivity of electrochemical biochips. An optimized integration of the nano/bio/CMOS interface is required to realize accurate and low-cost sensors for applications in personalized medicine. The nanotubes orientation on the chip is a key parameter. The role of the sidewalls and the tips surface on the electro-activity of the nanosensor is still subject of debate in the literature. In this paper, a comparison between vertical densely-packed and randomlyoriented carbon nanotubes directly growth on silicon wafer is proposed in order to identify the best nano-system for biosensing purposes. The comparison is done by using contact-angle measurements, energy dispersive X-ray analysis and electrochemical voltammetry.

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bio-chip applications IWASI 2011.pdf

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