The new generation of electronics tends to be well-performed, facile and environmentally friendly. Here, we report a bio-assembled sensitive pressure senor based on reduced graphene oxide-bacterial cellulose/bacterial cellulose (RGO-BC/BC) bilayer films, integrated by bacteria in one step. The advantage of this integration is that there is strong nanofiber connection between the conductive RGO-BC and insulative highly compressible porous BC layer, which confers RGO-BC/BC film electrode with good robustness, tailorability, flexibility and wearability. Without extra bonding-interface or postprocessing, the RGO-BC/BC bilayer films could be directly assembled into pressure sensing devices. Ascribed from the good reversible compressibility of the BC layer and incorporated bilayer structure, the pressure sensor performs good sensitivity and excellent durability and bending stability. The facile sensitive capacitive sensor could monitor the human hand or finger motion in real time. The sensing array is able to detect the spatial distribution of pressure mounted in the flat plane as well as curved surface of human body, succeeding in the correction of human walking posture for health care. The e-skins are potential in wearable electronics, artificial intelligence, soft robots, healthcare etc.

Graphic Abstract

中文翻译：

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耐用且灵活的生物组装RGO-BC / BC双层电极，可用于压力传感

新一代电子产品往往性能良好，轻便且对环境友好。在这里，我们报告了基于减少的氧化石墨烯-细菌纤维素/细菌纤维素（RGO-BC / BC）双层薄膜的生物组装式灵敏压力传感器，该细菌薄膜是一步整合的。这种集成的优点是，在导电RGO-BC和绝缘的高度可压缩的多孔BC层之间存在牢固的纳米纤维连接，这赋予RGO-BC / BC膜电极良好的坚固性，可定制性，柔韧性和耐磨性。无需额外的粘合界面或后处理，RGO-BC / BC双层膜可直接组装到压力传感设备中。归因于BC层的良好可逆压缩性和结合的双层结构，压力传感器具有良好的灵敏度以及出色的耐久性和弯曲稳定性。灵敏的电容传感器可以实时监控人的手或手指的运动。该感测阵列能够检测安装在人体平面和弯曲表面上的压力的空间分布，从而成功地校正了用于医疗保健的人类行走姿势。电子皮肤在可穿戴电子，人工智能，软机器人，医疗保健等领域具有潜力。

图形摘要