A simple device made from silicon and glass takes advantage of the natural behaviour of human sperm to separate healthy, swimming ones from defunct cells without harming them, which could boost the success of in vitro fertilisation (IVF) treatment.
Isolating the most active sperm from a sample is important for fertility treatments like IVF, but current clinical separation methods using centrifuges can harm the delicate cells.
The success rate of such assisted reproductive techniques is generally …