Colloids

Definition

Colloids are particles that have a diameter of between approximately 1 and 1,000 nanometres and that are evenly dispersed in fluids. Colloids are also known as colloidal dispersions because the particles remain dispersed and don't settle to the bottom.

Latest Research and Reviews

News and Comment

  • News and Views |

    There is growing evidence for the kinetics of homogeneous nucleation being a multi-step process. Colloid experiments and simulations now suggest that heterogeneous nucleation is no exception.

    • Rajesh Ganapathy
    •  & Ajay K. Sood
    Nature Physics 13, 421–422
  • News and Views |

    Ensembles of magnetic colloids can undergo an instability triggering the formation of clusters that move faster than the particles themselves. The many-body process relies on hydrodynamics alone and may prove useful for load delivery in fluidics.

    • Pietro Tierno
    Nature Physics 13, 324–326
  • News and Views |

    Confocal microscopy and computational analysis, now used for measuring microscale stresses in colloidal crystals, could be developed for investigation of amorphous materials, crystal melting, and mechanical properties of tissues.

    • Mark Bowick
    •  & Paul Chaikin
    Nature Materials 15, 1151–1152
  • News and Views |

    Simple models have given us surprising insight into how animals flock, but most assume they do so through a homogeneous landscape. Colloidal experiments now suggest that a little disorder can have unexpected — and spectacular — effects.

    • C. J. Olson Reichhardt
    •  & C. Reichhardt
    Nature Physics 13, 10–11