Low sperm motility, or otherwise healthy sperm that just can’t swim, can be a big factor in infertility.
A German research team has developed tiny motors that can make sperm better swimmers as they make their way to an egg.
The so-called spermbots basically consist of a tiny micromotor, a spiraled piece of metal that wraps that wraps around the tail of a sperm and helps propel it using a rotating magnetic field. The sperm is then delivered to an egg, hopefully leading to fertilization.
Once the sperm is securely lodged in the wall of an egg, the spermbot would reverse direction and releases its passenger.
This video shows how it works!