(Invited) Programmable Gold Nanowire Tattoo for Multimodal Wearable Sensors

Abstract

Sensitive, specific yet multifunctional tattoo-like electronics are ideal wearable systems for health monitoring anytime anywhere because they are virtually becoming parts of Human skins offering burdenless “unfeelable” wearing experience. Here, I will present a new skin-like, multifunctional electronic tattoo entirely from gold using standing enokitake mushroom-like vertically aligned nanowire membrane in conjunction with programmable local cracking technology. Only a single material type is needed for our integrated gold circuits involved in interconnects and multiplexed specific sensors, thereby avoiding complex multi-materials interface. We can fine-tune the properties of elastic gold conductors from strain-insensitive to highly strain-sensitive simply by programming localized crack size, shape and orientations. Furthermore, we demonstrate in-plane integration of strain/pressure sensor, anisotropic orientation-specific sensors, strain-insensitive stretchable interconnects, temperature sensors, glucose sensors, and lactate sensors without the need of soldering or gluing.