Key points from article :
A miniature 0.25 mm long medical robot has been developed by 3D lithography.
This allows both metal and plastic to be incorporated in these micro machines.
The plastic help construct soft, flexible parts that dissolve inside the body.
The metal part can be controlled by a magnetic field in medical applications.
“..Both materials offer certain advantages..our goal was to benefit from all these properties simultaneously by combining the two," said Carlos Alcântara, ETH Zurich.
Micro machines could manoeuvre through our blood vessels and deliver medications.
Future applications also include treating life-threatening aneurysms or performing other surgeries.
Research by ETH Zurich published in Nature Communcations.