New sperm-based biological robots or biobots developed by scientists can be used to fertilize individual eggs or to deliver targeted doses of drugs to them.
Oliver Schmidt and his team at the Institute for Integrative Nanosciences in Dresden, Germany, made this breakthrough by combining individual sperm cells with tiny magnetic metal tubes, New Scientist reported.
For creating them, Schmidt's group fashioned microtubes 50 microns long, by 5 to 8 microns in diameter from iron and titanium nanoparticles.
Scientists were able to control microtubes' orientation by using external magnetic fields.
The paper has been published in journal Advanced Materials.