Research Institute for Biomimetics and Soft Matter, College of Physical Science and Technology, Xiamen University, Xiamen, 361005, P. R. China.
Key Laboratory of Estuarine Ecological Security and Environmental Health of Fujian Province University, School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou, 363105, P. R. China.
Adv Healthc Mater. 2021 May;10(10):e2002083. doi: 10.1002/adhm.202002083. Epub 2021 Mar 24.
In recent years, the preparations of flexible electronic devices have attracted great attention. Here, a simple one-pot method of thermal polymerization is introduced to fabricate silk fibroin-dopted hydrogels (SFHs), which are both chemically and physically cross-linked by acrylamide (AM), acrylic acid (AA), and silk fibroin (SF). The addition of SF can effectively enhance the mechanical property of the SFH by 59% compared with SFH . Taking the advantage of its wide working range of stress (about 0.455-568.9 kPa), the SFH can work as a resistance-type pressure sensor to monitor different human motions. What is more, the excellent adhesion, about 75.17 N m of SFH enables it to fit tightly to other objects during the testing, which significantly reduces the loss of small signals due to poor fit. In addition, the SFH demonstrates excellent self-healing property without requiring external excitation and a sensitive temperature response in the range of -10 to 60 °C. The SFH is expected to be applied in the field of electronic skin, soft robots, and other flexible electronic products as well as speech recognition.
近年来，柔性电子设备的制备引起了极大的关注。在这里，我们介绍了一种简单的一锅热聚合方法来制备丝素蛋白水凝胶（SFH），它通过丙烯酰胺（AM）、丙烯酸（AA）和丝素蛋白（SF）进行化学和物理交联。与 SFH 相比，SF 的添加可将 SFH 的机械性能有效提高 59%。利用其宽的应力工作范围（约 0.455-568.9 kPa），SFH 可以作为一种电阻式压力传感器来监测不同的人体运动。更重要的是，SFH 具有极好的附着力，约为 75.17 N m，在测试过程中能够紧密贴合其他物体，从而显著减少因贴合不良导致的小信号损失。此外，SFH 无需外部激励即可实现出色的自修复性能，并在-10 至 60°C 的温度范围内具有灵敏的温度响应。SFH 有望应用于电子皮肤、软体机器人和其他柔性电子产品以及语音识别等领域。
