Transient form of polyvinyl alcohol-based devices with configurable resistive switching behavior for security neuromorphic computing.

This article focuses on the development and characterization of a physically transient memristive device based on an Ag/polyvinyl alcohol (PVA)/W structure with configurable resistive switching (RS) behavior for security-enhanced neuromorphic computing. The device's RS type can be modulated by controlling the compliance current, enabling emulation of synaptic functions such as short-term plasticity (STP) and its transition to long-term plasticity (LTP). Both the synaptic functions and the physical device dissolve rapidly upon immersion in de-ionized water due to the water solubility of PVA, providing a triggered-response mechanism that enhances information security. The study experimentally investigates the device's electrical performance, filament-based switching mechanisms, and dissolution characteristics, proposing this transient memristive device as a promising approach for secure neuromorphic systems.