Programmable Soft-Matter Electronics

The hydrogels of the polyelectrolytes
polyethylenimine and poly­(acrylic
acid) are used to form a thin-layer interface on the gallium–indium
eutectic alloy’s surface. The proposed method of gradually
increasing the applied voltage reveals the possibility of formation
of electronic components: diode, capacitor, resistor, and memristor.
The components can be changed to each other many times. A multilayer
perceptron model with one hidden layer and 12 nodes allows identifying
hydrogels’ composition and automatically setting the desired
architecture of electronic components. The design of electronic components
makes it possible to easy-to-produce new electronic parts and programmable
soft-matter electronics.