This is a strip with extraordinary properties. It could revolutionize medicine and robotics . It is capable of moving on its own in light of light stimuli. It is composed of polymeric materials , and manages to ripple and propel itself under the effects of a fixed light . It completely absorbs ultraviolet light, and creates a shadow behind it. Thanks to this "self-shadow" effect, the researchers were able to create a continuous ripple . It moves at the speed of a caterpillar, half a centimeter per second and is the size of a paperclip. It is the first device in the world to achieve it.
Video: The tiny strip that 'moves by itself' by light
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