Delft researchers create algae-powered soft robot arm controlled by light
Researchers from Delft University of Technology in the Netherlands have developed a small soft robot arm covered with microalgae that moves using light.
Light triggers bending motion
The device consists of a green strip made from two hydrogel layers with algae growing on the surface. When exposed to changing light conditions, this actuator bends back and forth in large, reversible movements. Lead researcher Marie-Eve Aubin-Tam describes the unit as being about 2 cm long and 1 mm thick.
Demonstrations show grasping ability
First author Fan Jiang used the actuator to hook a rubber ring and lift it from water. The team also demonstrated the robot grasping a small metal ball in underwater environments. These tasks highlight how soft handling could be useful for manipulating small objects.
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