Flexible resistive memory device based on agar

Potential applications of natural materials in environmentally friendly electronics include for information storage. In this work, natural material–agar was used to fabricate a flexible resistive memory device. Agar is one of the most widely used biomaterials for tissue engineering, medicine and other biotechnological applications. Agar is a suitable material for flexible electronics due to its good film formation, biocompatibility, low-temperature solution processability, transparency and flexibility. The flexible agar memory device described in this article exhibits an ON/OFF ratio of 103 under a bending radius of 5 mm, good bending endurance and a stable data retention time of over 104 s. Moreover, the agar could easily use a leaf as a substrate to make a fully biodegradable device. Agar, due to its exceptional flexibility, is emerging as a promising candidate for wearable and skin-compatible electronics, particularly in memory devices.