Angular Accelerometer with Integrated Liquid Spiral Channel and lig Sensing Element on Polyimide Film

This paper reports on the fabrication method of an angular accelerometer with integrated liquid spiral channels and laser-induced graphene (LIG) sensing element. The proposed fabrication process forms the LIG sensing element and the spiral grooves via a CO
2
laser and a UV laser, respectively, on a polyimide (PI) film. The liquid-sealed spiral channels are fabricated by filling the grooves with silicone oil and applying parylene deposition. Thus, the fabrication process is quite simple. The prototype sensor was validated for its response to angular acceleration.