My NCBISign In

Display Settings:

Format

Send to:

Choose Destination
    Science. 2009 Jan 16;323(5912):362-5.

    Morphogenesis of self-assembled nanocrystalline materials of barium carbonate and silica.

    García-Ruiz JM, Melero-García E, Hyde ST.

    Source

    Laboratorio de Estudios Cristalográficos, Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investígacìones Cientificas-Universidad de Granada, Avenida del Conocimiento, Parque Tecnológico, Ciencias de la Salud, 18100 Armilla, Spain.

    Abstract

    The precipitation of barium or strontium carbonates in alkaline silica-rich environments leads to crystalline aggregates that have been named silica/carbonate biomorphs because their morphology resembles that of primitive organisms. These aggregates are self-assembled materials of purely inorganic origin, with an amorphous phase of silica intimately intertwined with a carbonate nanocrystalline phase. We propose a mechanism that explains all the morphologies described for biomorphs. Chemically coupled coprecipitation of carbonate and silica leads to fibrillation of the growing front and to laminar structures that experience curling at their growing rim. These curls propagate in a surflike way along the rim of the laminae. We show that all observed morphologies with smoothly varying positive or negative Gaussian curvatures can be explained by the combined growth of counterpropagating curls and growing laminae.

    Comment in

    PMID:
    19150841
    [PubMed]

    Publication Types

    Publication Types

    LinkOut - more resources

    Full Text Sources

      Supplemental Content

      Click here to read

      Related citations

      See reviews... See all...

      Cited by 2 PubMed Central articles

      Related information

      • Related Citations
        Calculated set of PubMed citations closely related to the selected article(s) retrieved using a word weight algorithm. Related articles are displayed in ranked order from most to least relevant, with the “linked from” citation displayed first.
      • Cited in PMC
        Full-text articles in the PubMed Central Database that cite the current articles.

      Recent activity

      Clear Turn Off Turn On

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      You are here: NCBI > Literature > PubMed
      Write to the Help Desk