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. 1998 Dec 18;282(5397):2244-6.
doi: 10.1126/science.282.5397.2244.

Hierarchically ordered oxides

P Yang  1 , T Deng, D Zhao, P Feng, D Pine, BF Chmelka, GM Whitesides, GD Stucky
Affiliations

Hierarchically ordered oxides

P Yang et al. Science. .

Abstract

Porous silica, niobia, and titania with three-dimensional structures patterned over multiple length scales were prepared by combining micromolding, polystyrene sphere templating, and cooperative assembly of inorganic sol-gel species with amphiphilic triblock copolymers. The resulting materials show hierarchical ordering over several discrete and tunable length scales ranging from 10 nanometers to several micrometers. The respective ordered structures can be independently modified by choosing different mold patterns, latex spheres, and block copolymers. The examples presented demonstrate the compositional and structural diversities that are possible with this simple approach.

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