On-chip flexible multi-layer sensors for Human stress monitoring

We present a flexible multimodal stress sensor, where a skin temperature sensor, a skin conductance sensor, and a pulse wave sensor are integrated; thereby minimizing skin contact area as well as increasing device flexibility for applications to human stress monitoring in daily life. We design and fabricate the multilayered stress sensor, and experimentally verify the sensor performance for the simultaneous measurement of skin temperature, skin conductance and arterial pulse wave. The skin contact area of the flexible multimodal stress sensor has been reduced the 0.8% of the conventional stress measurement device; thus, demonstrating sensor´s potential for multimodal Human bio-signal monitoring applications, such as mobile electronics and wearable devices with improved wearing comfort.