Carbon Nanotube Field-Effect Transistor for DNA Sensing
- 106 Downloads
A field-effect transistor (FET) using carbon nanotubes (CNTs) as the conducting channel (CNTFET) has been developed, designed such that the CNT conducting channel (15 μm long, 700 μm wide) is directly exposed to medium containing target deoxyribonucleic acid (DNA). The CNTFET operates at high ON-current of 1.91 μA, ON/OFF-current ratio of 1.2 × 105, conductance of 4.3 μS, and leakage current of 16.4 pA. We present initial trials showing the response of the CNTFET to injection of target DNA into aqueous medium.
KeywordsField-effect transistor CNTFET DNA sensor
Unable to display preview. Download preview PDF.
This work was financially supported by the Vietnamese National Foundation for Science and Technology Development (NAFOSTED) under Project Code No. 103.99-2013.58.
- 14.T.T. Nguyen, S.U. Nguyen, and D.T. Phuong, Adv. Nat. Sci. Nanosci. Nanotechnol. 2, 1 (2011).Google Scholar
- 15.A. Javey, Q. Wang, W. Kim, and H. Dai, IEEE International Electron Devices Meeting (2004), pp. 1–4.Google Scholar
- 17.M. Simon and N. Kwok, Physics of Semiconductor Devices, 3rd ed. (Hoboken: Wiley-Interscience, 2007).Google Scholar