Micromotors get supercharged with three ‘engines’

Someday, microscopic robots could perform useful
functions, such as diagnostic testing in lab-on-a-chip sensors,
micropatterning surfaces or repairing equipment in tight spaces.
But first, scientists need to be able to tightly control the
microbots’ speed. Now, researchers reporting in ACS’ Chemistry of
Materials have developed micromotors with three “engines” that they
can control separately with chemical fuel, magnets and
light.