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