Laser builds mirror by pushing beads together
Light manipulates particles to form a reflective surface
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/01/ag_laser_feat.jpg?fit=860%2C460&ssl=1)
BUILT WITH LIGHT About 150 plastic beads arranged themselves into a micrometers-wide mirror when illuminated with green laser light.
T.M. Grzegorczyk et al./Phys. Rev. Lett. 2014