When you’re driving your car, you’re probably regularly looking at the speedometer to make sure you comply with the local speed limits. The method by which it works is simple enough: ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Designing organic polymers for visual sensing is highly desirable, yet tuning their properties remains challenging. Here, the authors report interfacial click polymerized pyridinium-yne films that ...