Ni-DNA-based Thin-film NDR Device Development

ORAL

Abstract

DNA is a natural one-dimensional nanowire; however, the low conductivity of DNA leads to the uselessness of nanodevices. To increase the conductivity of DNA, metal-doped DNA (M-DNA), such as Ni-DNA, has demonstrated its capability to be a new generation of conducting nanowires. In this study, we developed a flexible gold nano thin-film device by sputtering the gold on a PET substrate. The Ni-DNA could conjugate covalently via Au-S linkage. I-V curves of cyclic voltage scanning indicated that NDR effect and a hysteretic loop can be observed in this device. The NDR effect may be attributed to the Ni ion redox reaction taking place within Ni-DNA. These results indicated that the nano-thin-film Ni-DNA devices show similar I-V responses to the e-beam lithography nano-devices. Moreover, the non-Ni ion redox reaction currents at depletion region (~ +/- 2 V) of Ni-DNA device were observed after external bias +/- 6 V was applied. These results support the conducting mechanism of Ni-DNA which proposed in previous studies. In summary, a flexible device can be fabricated by using simple metal sputtering process, and the I-V responses indicated the Ni-DNA-based nano thin-film device might possess both memristor and memcapacitor behavior which can be used for mem-element electric system usage.

*This study was supported in part by National Science and Theoretical Council of Taiwan (Grant numbers: MOST 111-2112-M-A49-025 and NSTC 112-2112-M-A49-003).

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Presenters

  • Yu-Chun Lin

    • Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 30068, Taiwan, ROC

Authors

  • Yu-Chun Lin

    • Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 30068, Taiwan, ROC

  • Meng-Wei Hsieh

    • Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan ROC

  • Kuan-Cheng Lu

    • Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan ROC

  • Chia-Yu Chang

    • Department of Biological Science and Technology, National Yang Ming Chiao Tung University, 30068 Hsinchu, Taiwan
    • Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 30068, Taiwan, ROC

  • Wen-Bin Jian

    • Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan ROC

  • Yu-Chang Chen

    • Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan ROC

  • Chia-Ching Chang

    • Natl Yang Ming Chiao Tung Univ
    • Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 30068, Taiwan, ROC