Journal
RSC ADVANCES
Volume 6, Issue 30, Pages 25179-25184Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra02915a
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Funding
- State Key Project of Fundamental Research of China (973 Program) [2012CB933004]
- National Natural Science Foundation of China [51303194, 61328402, 61306152, 11474295, 61574146, 51525103]
- Chinese Academy of Sciences [YZ201327]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Ningbo Science and Technology Innovation Team [2015B11001]
- Ningbo Major Project for Science and Technology [2014B11011]
- Ningbo Natural Science Foundations [2014A610152]
- Ningbo International Cooperation Projects [2014D10005]
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Memristors have been extensively studied for nonvolatile memory storage, neuromorphic computing, and logic applications. Particularly, synapse emulation is viewed as a key step to realizing neuromorphic computing, because the biological synapse is the basic unit for learning and memory. In this study, a memristor with the simple structure of Ta/viologen diperchlorate [EV(ClO4)(2)]/terpyridyl-iron polymer (TPy-Fe)/ITO is fabricated to simulate the functions of the synapse. Essential synaptic plasticity and learning behaviours are emulated by using this memristor, such as spike-timing-dependent plasticity and spike-rate-dependent plasticity. It is demonstrated that the redox between a terpyridyl-iron polymer and viologen species leads to our memristor behavior. Furthermore, the learning behavior depending on different amplitudes of voltage pulses is investigated as well. These demonstrations help pave the way for building bioinspired neuromorphic systems based on memristors.
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