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Carbon Nanotube Field-Effect Transistor for DNA Sensing

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Abstract

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.

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Acknowledgements

This work was financially supported by the Vietnamese National Foundation for Science and Technology Development (NAFOSTED) under Project Code No. 103.99-2013.58.

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Authors and Affiliations

  1. International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No. 1, Dai Co Viet Road, Hai Ba Trung District, Hanoi, Vietnam

    Chu T. Xuan, Nguyen T. Thuy, Tran T. Luyen,  Tran T. T. Huyen & Mai A. Tuan

  2. Electric Power University (EPU), No. 235, Hoang Quoc Viet Road, Hanoi, Vietnam

    Nguyen T. Thuy

Authors
  1. Chu T. Xuan
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  2. Nguyen T. Thuy
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  3. Tran T. Luyen
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  4. Tran T. T. Huyen
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  5. Mai A. Tuan
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Correspondence to Mai A. Tuan.

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Xuan, C.T., Thuy, N.T., Luyen, T.T. et al. Carbon Nanotube Field-Effect Transistor for DNA Sensing. J. Electron. Mater. 46, 3507–3511 (2017). https://doi.org/10.1007/s11664-016-5238-2

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  • DOI: https://doi.org/10.1007/s11664-016-5238-2

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