A Flexible-Integrated Multimodal Hydrogel-Based Sensing Patch

A flexible multimodal proximity–pressure–temperature sensing patch with a simple structure was developed. Thanks to structural design and material synthesis, the sensor has an outstanding temperature sensitivity of 0.5 °C −1 with good linearity, a high pressure sensitivity of 30.6 kPa −1 and a non-contact sensing range is 2 m. After the multimodal sensing patches are integrated at different locations of the pillow, the sleeping conditions can be monitored comfortably.