Scientists create robots smaller than a grain of salt that can think Researchers have created microscopic, light-powered robots that can think, swim, and survive for months. Date: January 6, 2026 Source: University of Pennsylvania School of Engineering and Applied Science Summary: Researchers have created microscopic robots so small they’re barely visible, yet smart enough to sense, decide, and move completely on their own. Powered by light and equipped with tiny computers, the robots swim by manipulating electric fields rather than using moving parts. They can detect temperature changes, follow programmed paths, and even work together in groups. The breakthrough marks the first truly autonomous robots at this microscopic scale.
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