【Mater Horizons】Stretchable, self-healing and tissue-adhesive zwitterionic hydrogels as strain sensors for wireless monitoring of organ motions
writer：Xinjie Pei, Hua Zhang, Yang Zhou, Linjie Zhou, Jun Fu*
keywords：Zwitterionc hydrogels, strain sensors, wireless monitoring, tissue adhesion
source：期刊
specific source：Materials Horizons
Issue time：2020年
Skin-inspired sensors have great potential applications in wearable and implantable devices to monitor human motions. Robust tissue adhesion, fatigue resistance, and biocompatibility are desired for in situ signal capture and wireless transmission. Inspired by the mussel and zwitterionic adhesion mechanisms, we prepared novel stretchable, self-healing and polydopamine zwitterionic nanocomposite hydrogels that provide reversible and robust adhesion to tissues with a strength up to 19.4 kPa and a strain sensitivity of 4.3. The hydrogel sensors robustly adhere to organs like the heart, liver, and lungs to capture signals for remote monitoring and diagnostics through wireless transmission.