Department of Electronics and Electrical Engineering, Imperial College London, SW7 2BT London, U.K.
Department of Chemical Engineering and Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 37673 Pohang, Republic of Korea.
ACS Appl Mater Interfaces. 2021 Feb 3;13(4):5445-5450. doi: 10.1021/acsami.0c21300. Epub 2021 Jan 21.
The main requirements for skin-attachable memory devices are flexibility and biocompatibility. We represent a flexible, transparent, and biocompatible resistive switching random access memory (ReRAM) based on gold-decorated chitosan for future flexible and wearable electronics. The device with an Ag/Au-chitosan/Au cross-bar structure shows nonvolatile ReRAM properties. This fabricated Au-chitosan-based biocompatible ReRAM (bioReRAM) shows reliable bipolar memory performance with mechanical flexibility. The device shows essential memory characterizations including long data retention and hundreds of switching cycles. The origin of the resistance switching properties is related to trap-assisted space-charge-limited conduction in the high-resistance state and formation/annihilation of a conductive filament in the low-resistance state. This transparent bioReRAM is a viable candidate for flexible and biodegradable nanoelectronic devices.
对于可贴附于皮肤的存储设备，其主要要求是灵活性和生物兼容性。我们提出了一种基于金修饰壳聚糖的灵活、透明、且生物兼容的电阻式随机存取存储器（ReRAM），用于未来的灵活可穿戴电子设备。Ag/Au-壳聚糖/Au 交叉棒结构的器件表现出非易失性 ReRAM 特性。所制备的基于 Au-壳聚糖的生物兼容 ReRAM（bioReRAM）具有机械柔韧性的可靠双极存储性能。该器件表现出重要的存储特性，包括长数据保持时间和数百个开关循环。电阻开关特性的起源与高阻态下的陷阱辅助空间电荷限制传导以及低阻态下的导电丝的形成/消除有关。这种透明的 bioReRAM 是用于柔性和可生物降解纳米电子设备的可行候选材料。
