Liu Shuai, Shi Jianyang, Liu Dandan, Wang Haibo, Xiong Junjie, Du Zongliang
College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China.
Qingdao Institute, Sichuan University, Qingdao 266000, P. R. China.
ACS Appl Mater Interfaces. 2025 May 7;17(18):27076-27091. doi: 10.1021/acsami.4c20392. Epub 2025 Apr 24.
Flexible wearable electronic devices have garnered significant interest due to their inherent properties, serving as replacements for traditional rigid metal conductors in personal healthcare monitoring, human motion detection, and sensory skin applications. Here, we report a preparation strategy for a self-adhesive, ultrahigh stretchable DGel based on poly(acrylic acid) (PAA). The resulting DGel exhibits a high tensile strength (approximately 2.16 MPa) and an ultrahigh stretchability (approximately 5622.14%). More importantly, these meticulously designed DES gels demonstrate high signal recognition capabilities under strains ranging from 1 to 500%. DGel also shows excellent cyclic stability and durability (5000 cycles at 100% strain), exhibiting a superior electromechanical performance as a strain sensor. The ultrahigh strength of DGel is attributed to the synergistic effects of chemical and physical cross-linking within the gel. Additionally, DGel can be effortlessly assembled into wearable sensors. By integration of flexible sensing with deep learning, the fabricated touch recognition system achieves an identification accuracy of up to 99.33%. This advancement offers new insights into designing novel gels for a variety of applications, including tissue engineering, sensing, and wearable electronic devices.
柔性可穿戴电子设备因其固有特性而备受关注，可在个人医疗监测、人体运动检测和传感皮肤应用中替代传统的刚性金属导体。在此，我们报告了一种基于聚（丙烯酸）（PAA）的自粘性、超高拉伸性DGel的制备策略。所得的DGel具有高拉伸强度（约2.16MPa）和超高拉伸性（约5622.14%）。更重要的是，这些精心设计的DES凝胶在1%至500%的应变范围内表现出高信号识别能力。DGel还具有出色的循环稳定性和耐久性（在100%应变下5000次循环），作为应变传感器表现出卓越的机电性能。DGel的超高强度归因于凝胶内化学和物理交联的协同作用。此外，DGel可以轻松组装成可穿戴传感器。通过将柔性传感与深度学习相结合，制造的触摸识别系统实现了高达99.33%的识别准确率。这一进展为设计用于各种应用的新型凝胶提供了新的见解，包括组织工程、传感和可穿戴电子设备。
