Agricultural Products Processing Research Institute, Chinese Academy of Tropical, Agricultural Sciences (CATAS), Zhanjiang 524001, China.
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
ACS Appl Mater Interfaces. 2020 May 13;12(19):22163-22169. doi: 10.1021/acsami.0c04341. Epub 2020 May 1.
Flexible strain sensors are of great interest for future applications in the next-generation wearable electronic devices. However, most of the existing flexible sensors are based on synthetic polymer materials with limitations in biocompatibility and biodegradability, which may lead to potential environmental pollution. Here, we propose a naturally derived wearable strain sensor based on natural-sourced materials including milk protein fabric, natural rubber, tannic, and vitamin C. The obtained sensors exhibit remarkably enhanced mechanical properties and high sensitivity contrast to currently reported natural resource-based sensors, owing to the metal-ligand interface design and the construction of an organized three-dimensional conductive network, which well fit the requirements of electronic skin. This work represents an important advance toward the fabrication of naturally derived high-performance strain sensors and expanding possibilities in the design of environmental-friendly soft actuators, artificial muscle, and other wearable electronic devices.
柔性应变传感器在下一代可穿戴电子设备的未来应用中具有重要意义。然而，现有的大多数柔性传感器基于合成聚合物材料，其生物相容性和可生物降解性有限，这可能会导致潜在的环境污染。在这里，我们提出了一种基于天然来源材料的可穿戴应变传感器，包括牛奶蛋白纤维、天然橡胶、单宁酸和维生素 C。由于金属配体界面设计和有组织的三维导电网络的构建，所获得的传感器表现出显著增强的机械性能和对现有报道的基于天然资源的传感器的高灵敏度对比，这非常符合电子皮肤的要求。这项工作代表了在制造高性能天然衍生应变传感器方面的重要进展，并为设计环保软致动器、人造肌肉和其他可穿戴电子设备提供了更多可能。
