Synaptic Plasticity of a Microfluidic Memristor with a Temporary Memory Function Based on an Ionic Liquid in a Capillary Tube

Abstract

Fluidic memristor devices have received tremendous attention for smooth resistance switching in artificial synapses due to the ion migration, concentration polarization, and redox reactions mechanism. Here we provide a novel method of preparing microfluidic memristor with superior stability, robustness, and ultralow cost. The structure of the two-terminal memristor device is Cu/[MMIm][Cl]: H 2 O/Cu, C 5 H 9 N 2 Cl. The ionic liquid of 1,3-dimethylimidazole chloride salt was used as representative IL to display resistive memory properties in a cylindrical microchannel of a capillary. The fabricated device shows hysteretic and bipolar I−V characteristics of memristor, which can respond to external stimuli, e.g., space length between two electrodes and applied voltage. Meanwhile, this artificial synapse can mimic synaptic plasticity under various pulse stimuli stably and repeatedly, which results in temporary memory behavior. Such device exhibits great potential value in the area of neuromorphic artificial synapses and memory states.

Multi-Layered Bipolar Ionic Diode Working in Broad Range Ion Concentration

“…The broad hysteresis with these characteristics was at KCl 10 mM and 0.1 Hz. In addition, the zero-crossing wide hysteresis loop in ionic memristors has been studied at the salt concentration of 10 mM, normally [ 12 , 40 ]. Figure 6 B–D shows the hysteresis loop at KCl 1 mM, 10 mM, and 100 mM, respectively, and the best form of hysteresis loop was observed at 10 mM.…”

Poly(ionic liquid)s: an emerging platform for green chemistry

“…To date, much attention has been paid to the inclusion behavior of small guest molecules with CD. 175 For example, Yu et al designed a cyclodextrin-based poly(ionic liquid) membrane (PILM) by a casting method, which can be applied for the selective separation of L-Glu and L-Thr. As presented by Fig.…”

Reconstruction of D‐Π‐A Polymer Accelerating Photocatalytic Degradation of BPA and Production of H2O2

“…It can be seen that PB-NCZ and PBNCZ-COO − were more consistent with the pseudosecond-order model, indicating that the adsorption of BPA by the polymer before and after modification was a single-layer adsorption system (Figure 2b). [22] A further fit of the experimental data with two typical linear models (Langmuir and Freundlich) was performed. The results show that the adsorption isotherms of both are more consistent with the Langmuir model (Figure 2c).…”