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    Etched glass self-assembles into micron-size hollow platonic solids

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    Type
    Article
    Authors
    Boukhalfa, Sofiane
    Chaieb, Saharoui cc
    KAUST Department
    Bioscience Program
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2012-09-13
    Online Publication Date
    2012-09-13
    Print Publication Date
    2012-10-03
    Permanent link to this record
    http://hdl.handle.net/10754/562358
    
    Metadata
    Show full item record
    Abstract
    The interaction between the spreading of a hydrofluoric acid-based drop on a glass surface and its etching rate gives rise to hollow crystals of various shapes, including cubes, triangles, and icosahedra. These geometries are dependent on their position with respect to the contact line, where a rim forms by agglutination, similar to the formation of a coffee stain. Atomic force microscopy indentation and transmission electron microscopy observations revealed that these crystals are hollow ammonium-fluosilicate-based cryptohalite shells. © 2012 American Chemical Society.
    Citation
    Boukhalfa, S., & Chaieb, S. (2012). Etched Glass Self-Assembles into Micron-Size Hollow Platonic Solids. Crystal Growth & Design, 12(10), 4692–4695. doi:10.1021/cg3002702
    Sponsors
    S.C. thanks R. Haasch for XPS assistance, M. Sardela for his comments on the X-ray spectra, B. Cunningham for lending us the reflectance measurement equipment, and S. Salapaka for the AFM measurements. These experimental characterizations were carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under Grant DEFG02-91-ER45439. S.B. is an undergraduate at the department of material science and engineering.
    Publisher
    American Chemical Society (ACS)
    Journal
    Crystal Growth & Design
    DOI
    10.1021/cg3002702
    ae974a485f413a2113503eed53cd6c53
    10.1021/cg3002702
    Scopus Count
    Collections
    Articles; Bioscience Program; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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