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packman

(16,296 posts) Wed May 24, 2017, 10:12 PM May 2017

Damn lazy sperm needs a microbot to help it

NOTE: The sperm and egg are bovine

".., a helix of magnetic material spins around its axis under a rotating magnetic field. These devices are easier to control: changing the field's orientation and frequency alters the direction and speed of the motor. Such 'magnetic swimmers' mimic flagella, the tails that propel some microorganisms4. Ultrasound, too, can be used for propulsion and guidance"

More on how it's done:

http://www.nature.com/news/medical-microbots-need-better-imaging-and-control-1.22022?WT.mc_id=TWT_NatureNews&sf81490522=1