自愈水凝胶
材料科学
导电体
软机器人
胶粘剂
导电聚合物
韧性
纳米技术
可穿戴计算机
复合材料
粘附
聚合物
执行机构
高分子化学
计算机科学
嵌入式系统
人工智能
图层(电子)
作者
Rui Lv,Zhongwu Bei,Yuan Ming Huang,Yangwei Chen,Zhiqiang Zheng,Qingliang You,Chao Zhu,Yiping Cao
标识
DOI:10.1002/marc.201900450
摘要
The latest generation of wearable devices features materials that are flexible, conductive, and stretchable, thus meeting the requirements of stability and reliability. However, the metal conductors that are currently used in various equipments cannot achieve these high performance expectations. Hence, a mussel-inspired conductive hydrogel (HAC-B-PAM) is prepared with a facile approach by employing polyacrylamide (PAM), dopamine-functionalized hyaluronic acid (HAC), borax as a dynamic cross-linker agent, and Li+ and Na+ as conductive ions. HAC-B-PAM hydrogels demonstrate an excellent stretchability (up to 2800%), high tensile toughness (42.4 kPa), self-adhesive properties (adhesion strength to porcine skin of 49.6 kPa), and good self-healing properties without any stimuli at room temperature. Furthermore, the fabricated hydrogel-based strain sensor is sensitive to deformation and can detect human body motion. Multifunctional hydrogels can be assembled into flexible wearable devices with potential applications in the field of electronic skin and soft robotics.
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