摘要
Electromyography(EMG)signal is the electrical potential generated by contracting muscle cells.Long-term and accurate EMG monitoring is desirable for neuromuscular function assessment in clinical and the human–computer interfaces.Herein,we report a skin-integrated,biocompatible,and stretchable silicon microneedle electrode(SSME)inspired by the plant thorns.The silicon microneedles are half encapsulated by the polyimide(PI)to enhance the adaptability to deformation and resistance to fatigue.Thorn-like SSME is realized by the semi-additive method with a stretchability of not less than 36%.The biocompatibility of SSME has been verified using cytotoxicity tests.EMG monitoring in motion and long-term has been conducted to demonstrate the feasibility and performance of the SSME,which is compared with a commercial wet electrode.Hopefully,the strategies reported here can lead to accurate and long-term EMG monitoring,facilitating an effective and reliable human–computer interface.
基金
the financial support from the National Natural Science Foundation of China(Grant No.U20A6001,11902292)
Zhejiang Province Key Research and Development Project(Grant No.2021C01183,2021C05007-4).
