Multifunctional Protein Nanowire Humidity Sensors for Green Wearable Electronics
Multifunctional Protein Nanowire Humidity Sensors for Green Wearable Electronics
复制标题
用于绿色可穿戴电子产品的多功能蛋白质纳米线湿度传感器
DOI：
10.1002/aelm.202000721
复制
发表时间：
2020-08-12
影响因子：
6.2
通讯作者：
Yao, Jun
中科院分区：
文献类型：
--
作者：
Liu, Xiaomeng;Fu, Tianda;Yao, Jun
可持续生产的生物材料可以大大提高可穿戴传感器技术的生物相容性，同时减少材料制造和处理对能源和环境的影响。开发了一种电子传感器装置，其传感元件是一层薄薄的（约2 μ m）导电蛋白质纳米线薄膜，该薄膜取材于微硫还原地杆菌。该传感器对湿度变化反应迅速，具有高选择性和高灵敏度。该传感器作为可穿戴设备集成在柔性基板上，可以实时监测呼吸和皮肤水合作用等生理状况。非接触式身体跟踪演示了一组传感器，可以在距离皮肤很远的地方以高灵敏度检测湿度梯度。湿度梯度诱导蛋白质纳米线薄膜中的定向电荷传输，使电流信号的产生无需施加外部电压偏置以进行无功率传感。这些结果显示了开发基于蛋白质纳米线的可穿戴传感器设备的巨大前景。
Sustainably produced biomaterials can greatly improve the biocompatibility of wearable sensor technologies while reducing the energy and environmental impacts of materials fabrication and disposal. An electronic sensor device in which the sensing element is a thin (approximate to 2 mu m) film of electrically conductive protein nanowires harvested from the microbeGeobacter sulfurreducensis developed. The sensor rapidly responds to changes in humidity with high selectivity and sensitivity. The sensor is integrated on a flexible substrate as a wearable device, enabling real-time monitoring of physiological conditions such as respiration and skin hydration. Noncontact body tracking is demonstrated with an array of sensors that detect a humidity gradient at distance from the skin with high sensitivity. Humidity gradients induce directional charge transport in the protein nanowires films, enabling the production of a current signal without applying an external voltage bias for powerless sensing. These results demonstrate the considerable promise for developing protein nanowire-based wearable sensor devices.