Mycrojet has been used to fabricate direct write sensors on metal parts. Temperature, strain, proximity, and continuity sensors are printed directly onto the part, or sensors are printed onto a flexible polymer that is attached to the part. Electrical measurements show conductive traces with resistances of a few ohms/cm. Various patterns are printed to form sensors. A data acquisition system is used to take resistance measurements as a function of time, measuring and recording the sensor response.
3-Layer Device and Response Curve: layer 1: polyimide film base; layer 2: silver interconnects; layer 3: polymer overcoat