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Vol. 7 No. 2 (2015)

Controlling Ion Conductance and Channels to Achieve Synaptic-like Frequency Selectivity

https://doi.org/10.1007/s40820-014-0024-2
Siheng Lu
Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
Fei Zeng
Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
Wenshuai Dong
Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
Ao Liu
Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
Xiaojun Li
Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
Jingting Luo
Institute of Thin Film Physics and Applications, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, People’s Republic of China

Corresponding Author: Jingting Luo

luojt@szu.edu.cn

Nano-Micro Letters, Vol. 7 No. 2 (2015), Article Number: 121-126

Abstract

Enhancing ion conductance and controlling transport pathway in organic electrolyte could be used to modulate ionic kinetics to handle signals. In a Pt/Poly(3-hexylthiophene-2,5-diyl)/Polyethylene+LiCF3SO3/Pt hetero-junction, the electrolyte layer handled at high temperature showed nano-fiber microstructures accompanied with greatly improved salt solubility. Ions with high mobility were confined in the nano-fibrous channels leading to the semiconducting polymer layer, which is favorable for modulating dynamic doping at the semiconducting polymer/electrolyte interface by pulse frequency. Such a device realized synaptic-like frequency selectivity, i.e., depression at low frequency stimulation but potentiation at high-frequency stimulation.

Keywords

Ions migration Nano-channels Frequency selectivity Semiconducting polymer Organic electrolyte Dynamic doping
Lu, Siheng, Fei Zeng, Wenshuai Dong, Ao Liu, Xiaojun Li, and Jingting Luo. 2014. “Controlling Ion Conductance and Channels to Achieve Synaptic-Like Frequency Selectivity”. Nano-Micro Letters 7 (2):121-26. https://doi.org/10.1007/s40820-014-0024-2.
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