Each helix is:
- Made from biocompatible polymer materials
- Coated with a thin metallic layer
- Responsive to external magnetic fields
- Large enough to fit around a sperm tail
- Small enough to operate within biological fluids
Despite their microscopic size, these structures can be manipulated with remarkable accuracy.
Capturing the Sperm Cell
The process begins by introducing both sperm cells and magnetic micro-helices into a controlled environment.
When researchers apply a rotating magnetic field, the helix begins spinning like a miniature screw.
As it moves through the fluid, the helix encounters sperm cells and can gently slide around the flagellum—the tail responsible for propulsion.
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