Flexible hybrid sensor systems with feedback functions

An overview of feedback-driven, skin-like multifunctional sensor systems, from the basic material/structural design to applications. Emerging functional nanomaterials and innovative structures for constructing flexible sensors are highlighted, followed by an introduction of various integrated flexible sensor systems. Several categories of feedback sensor systems are described in terms of prosthesis- and AR/VR-based human-machine interfaces, smartphone-based approaches for point-of-care detection, and smart wearable displays for direct signal visualization. The profound significance of these innovations is also highlighted.