Structure of a large colloidal crystal: controlling orientation and three-dimensional order
2012 (English)In: RSC Advances, ISSN 2046-2069, Vol. 2, no 18, 7091-7098 p.Article in journal (Refereed) Published
The three-dimensional crystal structure of charge stabilised polystyrene latex in deionised water was investigated by small-angle neutron diffraction. Crystallisation with a grain size of approximately 1 x 1 cm(2) was observed when the sample was flowed gently in to a 2 mm path cell. Bragg scattering peaks arising from the structure were observed under rotation about three perpendicular axes of the sample. The diffraction patterns indicate clearly that there is a cubic close packed structure with a 110 axis perpendicular to the cell wall. Rotations in small steps show large changes and indicate that the crystal is well oriented and has three-dimensional order. The crystal orientation was controlled by the meniscus and direction of flow when filling the cell.
Place, publisher, year, edition, pages
2012. Vol. 2, no 18, 7091-7098 p.
Other Physics Topics
IdentifiersURN: urn:nbn:se:uu:diva-171737DOI: 10.1039/c2ra21092dISI: 000306946500014OAI: oai:DiVA.org:uu-171737DiVA: diva2:512222
Original manucript title: Structure of colloidal crystal : controlling size and three-dimensional order2012-03-262012-03-262012-10-02Bibliographically approved