To push through goo, use itty, bitty propellers

Tiny machines mimic the chemical action of ulcer-causing bacteria

Helicobacter pylori

POWERING THROUGH  Inspired by the bacterium Helicobacter pylori, researchers designed microscopic, protein-coated propellers (illustrated) that can push through thick mucus.  

 

Alejandro Posada 

By stealing a trick from bacteria, tiny human-made vehicles can cruise through goo.