Metallization of colloidal crystals
ORAL
Abstract
Size asymmetric binary colloidal crystals with structures analogous to ionic atomic crystals undergo a transition where the smaller component delocalizes as the temperature increases, generating "metallic" colloidal crystals. The small particles roam among the large particles holding together the lattice, as electrons do in metals. In this talk, I will describe the nature of this localized-delocalized sublattice transition in size asymmetric colloidal mixtures and make analogies with an insulator-metal transition that is largely driven by phonons of different crystal phases.
*This work was supported by the Center for Bio-Inspired Energy Science, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award DE-SC0000989. H.L.-R. thanks a fellowship from Fulbright-Garcia Robles and A.E. thanks a fellowship from the National Science Foundation under grant DGE-1450006. M.O.d.l.C. thanks the computational support of the Sherman Fairchild Foundation.
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Publication: Metallization of colloidal crystals (arXiv:2107.03968)
Delocalization transition of colloidal crystals (https://doi.org/10.1021/acs.jpcc.0c09730)
Presenters
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Hector Manuel Lopez Rios
- Northwestern University