Conductance Tunable Dna Guided Nickel Ions Chain Formation and Characterization
Chia-Ching Chang1,4*, Wen-Bin Jian2, Yu-Chang Chen2, Yun-Liang Soo3, Chiun-Jye Yuan1
11. Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
2Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan
3Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
4Institute of Physics, Academia Sinica, Taipei, Taiwan
* Presenter:Chia-Ching Chang,
DNA is a native nanowire which may be used as nanomachines or nanoelectronics. However, low conductance blocked the application of regular DNA. Metal ion chain is an idea molecular wire highly potential applications in nanoelectronics. However, frame free metal ion chain is infeasible. By combining DNA and nickel ions, a micrometer long DNA guided nickel ion chain complex (Ni-DNA) has been fabricated. By applying external bias with various time periods the conductance of Ni-DNA device can be changed accordingly. Moreover, the capacitance of Ni-DNA device also changed, too. Moreover, the Ni-DNA device demonstrated a negative differential resistance (NDR) behavior by cyclic bias application. In summary, we have developed a micro-meter long conducting nanowire and exhibited characteristics of memristor and memcapacitor and NDR properties which making it a potential candidate for nano-electronics and molecular computing applications [1].
[1] H.L. Chu, at al. NPG Asia Materials 9, e430 (2017).
This study is supported in part by the Ministry of Science and Technology (MOST), Taiwan (ROC) MOST 104-2627-M-009-007, MOST 105-2627-M-009-006

Keywords: DNA, nanowire, Nickel ion chain, memristor, memcapacitor