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Rationally designed complex, hierarchical microarchitectures.(RESEARCH ARTICLES)(Author abstract)

Noorduin, Wim L. ; Grinthal, Alison ; Mahadevan, L. ; Aizenberg, Joanna

Science, May 17, 2013, Vol.340(6134), p.832(6) [Peer Reviewed Journal]

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  • Title:
    Rationally designed complex, hierarchical microarchitectures.(RESEARCH ARTICLES)(Author abstract)
  • Author: Noorduin, Wim L. ; Grinthal, Alison ; Mahadevan, L. ; Aizenberg, Joanna
  • Subjects: Crystal Structure -- Research ; Nanotechnology -- Research
  • Is Part Of: Science, May 17, 2013, Vol.340(6134), p.832(6)
  • Description: The emergence of complex nano- and microstructures is of fundamental interest, and the ability to program their form has practical ramifications in fields such as optics, catalysis, and electronics. We developed carbonate-silica microstructures in a dynamic reaction-diffusion system that allow us to rationally devise schemes for precisely sculpting a great variety of elementary shapes by diffusion of carbon dioxide (C[O.sub.2]) in a solution of barium chloride and sodium metasilicate. We identify two distinct growth modes and show how continuous and discrete modulations in C[O.sub.2] concentration, pH, and temperature can be used to deterministically switch between different regimes and create a bouquet of hierarchically assembled multiscale microstructures with unprecedented levels of complexity and precision. These results outline a nanotechnology strategy for "collaborating" with self-assembly processes in real time to build arbitrary tectonic architectures. 10.1126/science.1234621
  • Language: English
  • Identifier: ISSN: 0036-8075

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