Bio-signal recording is vital for human condition monitoring and early disease diagnosis. An electrode is a biosensor for bio-signal collection. The conventional wet electrode is not suitable for long-term bio-signal recording owing to the gradual drying of the electrolytic gel and increase in the electrode-skin interface impedance. Microneedle array electrode is a dry electrode that can painlessly pierce skin, form a contact interface between the microneedles and skin tissue, eliminate the high impedance of stratum corneum, weaken the motion artifact, and accurately record bio-signals without skin preparation and application of electrolytic gel. This review focuses on the recently developed fabrication techniques, the mechanical performance, and bio-signal recording performance of microneedle array electrode. The microneedle array electrode is a potential electrode for long-term bio-signal recording, although progress is required in terms of safety and scaled-up manufacture.

中文翻译：

---

用于生物信号记录的微针阵列电极的小型回顾：回顾

生物信号记录对于人体状况监测和早期疾病诊断至关重要。电极是用于收集生物信号的生物传感器。由于电解凝胶的逐渐干燥和电极-皮肤界面阻抗的增加，传统的湿电极不适合长期生物信号记录。微针阵列电极是一种干式电极，可无痛刺穿皮肤，在微针与皮肤组织之间形成接触界面，消除角质层高阻抗，减弱运动伪影，无需皮肤准备和应用电解液即可准确记录生物信号。凝胶。本综述重点介绍了最近开发的微针阵列电极的制造技术、机械性能和生物信号记录性能。