Three-dimensional patterning and morphological control of porous nanomaterials by gray-scale direct imprinting.

Ryckman JD, Jiao Y, Weiss SM
Sci Rep. 2013 3: 1502

PMID: 23518798 · PMCID: PMC3604788 · DOI:10.1038/srep01502

We present a method for direct three-dimensional (3D) patterning of porous nanomaterials through the application of a premastered and reusable gray-scale stamp. Four classes of 3D nanostructures are demonstrated for the first time in porous media: gradient profiles, digital patterns, curves and lens shapes, and sharp features including v-grooves, nano-pits, and 'cookie-cutter' particles. Further, we demonstrate this technique enables morphological tuning and direct tailoring of nanomaterial properties, including porosity, average pore size, dielectric constant, and plasmonic response. This work opens a rapid and low-cost route for fabricating novel nanostructures and devices utilizing porous nanomaterials, with promising applications spanning diffractive and plasmonic sensing, holography, micro- and transformation optics, and drug delivery and imaging.

MeSH Terms (8)

Drug Delivery Systems Holography Humans Nanopores Nanostructures Nanotechnology Optics and Photonics Surface Properties

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