Imagine microrobots the size of a grain of sand, teaming up underwater using only light to power up and communicate. The new 'smartlets' from Chemnitz University are self-powered, self-organizing, and can coordinate in real time—no wires, no external controls. Are we on the verge of robotic colonies that can adapt and collaborate like living organisms? Would you trust a swarm of these in medical or environmental missions? #Tech #microrobots #robotics