High Aspect-Ratio Cylindrical Nanopore Arrays and Their Use for Templating Titania Nanoposts


  • We gratefully thank DuPont for providing the samples of DuPont Tyzor. O.-H.P. and H.-C.K. acknowledge the support of the IBM Almaden Innovation Grant. Supporting Information is available online at Wiley InterScience or from the author.


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Well-defined arrays of titania nanoposts are generated by using high aspect-ratio cylindrical nanopore templates. The simple and controllable fabrication scheme of the nanoporous templates makes them very attractive for creating well-defined nanostructures out of a variety of functional materials. The arrays of titania nanoposts can find a variety of applications such as photonic crystals, photocatalysts, and photovoltaics.