Made on Many Scales

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Science  18 Dec 1998:
Vol. 282, Issue 5397, pp. 2149
DOI: 10.1126/science.282.5397.2149q

Silicon, niobium, and titanium oxides with nanometer-scale pores have been patterned on a micrometer scale to create hierarchically ordered materials. Yang et al. (p. 2244) used rubber micromolds to create surface patterns the sol-gel precursors, which could contain triblock copolymers or polystyrene spheres that directed pore formation.

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