This paper introduces a high-performance, reusable, ultrathin, and ultrasoft electronic tattoo sensor. The sensor, composed of a parylene-hydrogel double-layer system, demonstrates significantly improved performance compared to existing electronic tattoo sensors and even surpasses gold-standard medical-grade silver/silver chloride wet gel electrodes in terms of sensor-skin interface impedance (SSII), signal-to-noise ratio (SNR), and susceptibility to motion. The sensor is fabricated using a scalable and cost-effective method on tattoo paper, allowing for easy application and removal. Its reusability has been demonstrated over six months.

Shuyun Zhuo, Alexandre Tessier, Mina Arefi, Anan Zhang, Chris Williams, Shideh Kabiri Ameri