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Void-based Assembly of Colloidal Crystals



Nathan Mahynski, Lorenzo Rovigatti, Christos Likos, Athanassios Panagiotopoulos


We have used computer simulations to reveal how colloidal crystals may be assembled by engineering the shape and charge of polymeric additives, which act as structure-directing agents (SDAs). Using these agents, only a single desired polymorph may be obtained from a crystallizing mixture of colloids and polymers, which would otherwise result in a defective crystal in the absence of these agents. Building on previous work, which demonstrated this principle in the limiting case of high-density, close-packed crystals, we have now achieved this control over low-density, open crystals, which have broad utility especially in optical applications. These results reveal the general utility of the SDA paradigm in assembling tailored colloidal crystals, which represents a new design method that does not rely on any modification of the colloids themselves.
GIT Laboratory Journal, Europe


colloidal crystals, polymorphism, material science, optics


Mahynski, N. , Rovigatti, L. , Likos, C. and Panagiotopoulos, A. (2017), Void-based Assembly of Colloidal Crystals, GIT Laboratory Journal, Europe (Accessed April 23, 2024)
Created June 1, 2017, Updated August 1, 2017