NickelateFigure (IMAGE) DOE/Argonne National Laboratory Caption Hydrogen ions in the nickelate enable one of four functions at different voltages (applied by platinum and gold electrodes at top). The functions are artificial synapse, artificial neuron, capacitor and resistor. The capacitor stores and releases current; the resistor blocks it. Credit (Image by Argonne National Laboratory.) Usage Restrictions Original Content License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.