Journal
SCIENCE
Volume 291, Issue 5503, Pages 453-457Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.291.5503.453
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We report a nanoscale lost-wax method for forming colloids with size distributions around 5% and their corresponding colloidal crystals. Macroporous polymer templates are first prepared from a silica colloidal crystal. We then use the uniform and interconnected voids of the porous polymer:to generate a wide variety of highly monodisperse inorganic, polymeric, and metallic solid and core-shell colloids, as well as hollow colloids with controllable shell thickness, as colloidal crystals. We can also uniformly deform the polymer template to alter colloidal shape and demonstrate the formation of elliptical particles with precisely controlled aspect ratios.
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