Dutch scientists built a tiny robotic arm using living algae and two layers of gel; controlled by light, the two-centimetre strip grasped a metal ball and lifted a rubber ring underwater without a conventional motor
Researchers use light to trigger living algae’s metabolism, enabling the tiny robotic arm to bend without electrical signals. Think of a robot without battery, without traditional motor and without complicated mechanical joints and only living microalgae, soft gels and source of light. That’s the unusual premise of a new experiment by researchers at Delft University…