title: Frequency-dependent learning achieved using semiconducting polymer/electrolyte composite cells.
abstract: Frequency-dependent learning has been achieved using semiconducting polymer/electrolyte composite cells. The cells composed of polymer/electrolyte double layers realized the conventional spike-rate-dependent plasticity (SRDP) learning model. These cells responded to depression upon low-frequency stimulation and to potentiation upon high-frequency stimulation and presented long-term memory. The transition threshold θm from depression to potentiation varied depending on the previous stimulations. A nanostructure resembling a bio-synapse in its transport passages was demonstrated and a random channel model was proposed to describe the ionic kinetics at the polymer/electrolyte interface during and after stimulations with various frequencies, accounting for the observed SRDP.
authors.affiliation: Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China. zengfei@tsinghua.edu.cn.
authors.forename: W S
authors.initials: WS
authors.lastname: Dong
authors.forename: F
authors.initials: F
authors.lastname: Zeng
authors.forename: S H
authors.initials: SH
authors.lastname: Lu
authors.forename: A
authors.initials: A
authors.lastname: Liu
authors.forename: X J
authors.initials: XJ
authors.lastname: Li
authors.forename: F
authors.initials: F
authors.lastname: Pan