This is a thermo-polyurethane (TPU) fibre of around φ=17μm that is coiled inside a silicone oil droplet of around φ=200μm. The fibre deforms the droplet and gives it a lens shape.
This is a thermo-polyurethane (TPU) fibre of around φ=17μm that is coiled inside a silicone oil droplet of around φ=200μm. The fibre deforms the droplet and gives it a lens shape.