Scientists have qualified plastics to use a combination of photosensitive bio-inspiration and light-reactive coatings to manoeuvre on their own

The researchers use a parallel to the puppy of Pavlov, but the fact is more like how a plant bends towards the light and away from the shadow. The reaction of light and heat creates constriction or extension which twists joints and enables mobility. Any Pavlovian reaction is built-in for plants because the light is the food itself. But even after the heat stimulus is withdrawn, which is the Pavlovian hand, the plastic robot is trained to respo....