The ability to control the selectivity and angular flexibility of interparticle interactions 5 makes it possible to provide valence to colloids. This can be done by means of chemical 6,7,8 or physical ...

Several years ago, scientists discovered that a single microscopic particle could rock back and forth on its own under a steady electric field. The result was curious, but lonely. Now, Northwestern ...

Scientists didn’t understand why independently oscillating microscopic particles suddenly begin moving in perfect sync when grouped together. Researchers showed that fluid-driven hydrodynamic ...