Multifunctional Memprocessor Device with Ni-DNA
Chia-Ching Chang1,2*, Wen-Bin Jian3, Yu-Chang Chen3, Yun-Liang Soo4, Chiun-Jye Yuan1, Massimiliano Di Ventra5
1Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
2Institute of Physics, Academia Sinica, Taipei, Taiwan
3Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan
4Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
5Department of Physics, University of California, San Diego, USA
* presenting author:Chia-Ching Chang,
Molecular metal ion chains are highly desirable for their wide applications in the field of molecular electronics. However, synthesis of a scaffold-free is infeasible and long metal ion chain is exceptional challenging. DNA’s self-assembly property makes it to be an excellent template to fabricate metal ions via metal-base-pairs interaction. By using DNA as template, an 830-nm equivalent conducting nickel ion chain was fabricated. The device with nickel ion chain demonstrates the functionalities of memristor (memory resistor), memcapacitor (memory capacitor), and redox-induced hysteresis effects. The memory state operation is attributed to the dynamic response of nickel-ion states caused by redox reaction. The redox state of Ni ions is controllable by external bias, making it a multi-state memory component for a possible “memcomputer”, namely a computer that uses memory to store and process information simultaneously.

Keywords: Ni-DNA, memristor, memcapacitor, NDR