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has been cited by the following article:

• TITLE: Electronic Detection of Escherichia coli O157︰H7 Using Single-Walled Carbon Nanotubes Field-Effect Transistor Biosensor

  AUTHORS: Xiaoxian Zhang, Dongwei Wang, Danna Yang, Sai Li, Zhiqiang Shen

  KEYWORDS: Single-walled Carbon Nanotubes (SWNTs); Field Effect Transistors; Biosensor; Escherichia Coli O157︰H7

  JOURNAL NAME: Engineering, Vol.4 No.10B, October 21, 2013

  ABSTRACT: Field effect transistors (FET) based on Single-Walled Carbon Nanotubes (SWNTs) become the hot topic in fields of nano-electronic, clinical diagnostics, environmental testing etc. in recent years. In this paper, we reported a simple, scalable way to enrich semiconducting SWNTs by using HNO3/H2SO4. Then carbon nanotube field-effect transistors (CNTFET) biosensor was fabricated with the enrichment SWNTs for Escherichia coli O157︰H7 detection. The response of each CNTFET was monitored in real time before and after introduction of the Escherichia coli O157︰H7 at various concentrations. The results show that CNT-FET biosensors we fabricated are sensitive to change of concentration of solution and response time is really short.