Living crystals of light-activated colloidal surfers

J.A. Palacci, S. Sacanna, A.P. Steinberg, D.J. Pine, P.M. Chaikin, Science 339 (2013) 936–940.

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Journal Article | Published | English

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Author
Palacci, Jérémie AIST Austria; Sacanna, S.; Steinberg, A. P.; Pine, D. J.; Chaikin, P. M.
Abstract
Spontaneous formation of colonies of bacteria or flocks of birds are examples of self-organization in active living matter. Here, we demonstrate a form of self-organization from nonequilibrium driving forces in a suspension of synthetic photoactivated colloidal particles. They lead to two-dimensional "living crystals," which form, break, explode, and re-form elsewhere. The dynamic assembly results from a competition between self-propulsion of particles and an attractive interaction induced respectively by osmotic and phoretic effects and activated by light. We measured a transition from normal to giant-number fluctuations. Our experiments are quantitatively described by simple numerical simulations. We show that the existence of the living crystals is intrinsically related to the out-of-equilibrium collisions of the self-propelled particles.
Publishing Year
Date Published
2013-02-22
Journal Title
Science
Volume
339
Issue
6122
Page
936-940
ISSN
eISSN
IST-REx-ID

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Palacci JA, Sacanna S, Steinberg AP, Pine DJ, Chaikin PM. Living crystals of light-activated colloidal surfers. Science. 2013;339(6122):936-940. doi:10.1126/science.1230020
Palacci, J. A., Sacanna, S., Steinberg, A. P., Pine, D. J., & Chaikin, P. M. (2013). Living crystals of light-activated colloidal surfers. Science. American Association for the Advancement of Science . https://doi.org/10.1126/science.1230020
Palacci, Jérémie A, S. Sacanna, A. P. Steinberg, D. J. Pine, and P. M. Chaikin. “Living Crystals of Light-Activated Colloidal Surfers.” Science. American Association for the Advancement of Science , 2013. https://doi.org/10.1126/science.1230020.
J. A. Palacci, S. Sacanna, A. P. Steinberg, D. J. Pine, and P. M. Chaikin, “Living crystals of light-activated colloidal surfers,” Science, vol. 339, no. 6122. American Association for the Advancement of Science , pp. 936–940, 2013.
Palacci JA, Sacanna S, Steinberg AP, Pine DJ, Chaikin PM. 2013. Living crystals of light-activated colloidal surfers. Science. 339(6122), 936–940.
Palacci, Jérémie A., et al. “Living Crystals of Light-Activated Colloidal Surfers.” Science, vol. 339, no. 6122, American Association for the Advancement of Science , 2013, pp. 936–40, doi:10.1126/science.1230020.

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