Swim, Sperm Robots, Swim

To transport goods within the body, scientists turn to a familiar design.

magnetosperm
If you could shrink yourself down to the size of a bacterium and explore a watery pool, your normal swimming technique would soon prove worthless. Liquids feel thicker, more like moving through honey than water, and tiny swimmers are easily jostled off course. So when an international team of engineers wanted to design tiny robots that could move cells around, deliver drugs deep inside the body or clean clogged arteries, they looked to nature for inspiration: sperm. The team’s “magne...
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