Dresden 2009 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 39: POSTERS Colloids and Liquids

CPP 39.13: Poster

Donnerstag, 26. März 2009, 17:00–19:30, P3

Shear stable colloidal crystals. — Roy Goldberg, Jose Marquez Hueso, Ana Barreira Fontecha, and •Hans Joachim Schöpe — Johannes Gutenberg-Universität Mainz, Institut für Physik, Staudinger Weg 7, 55099 Mainz, Deutschland

Colloidal crystals show interesting optical properties with potential application as new types of optical gratings or optical filters. For these applications it is necessary to prepare rigid and robust opaline materials where the crystalline order of the particles is maintained and can not be disturbed by thermal or mechanical forces. We here present several methods producing shear stable colloidal crystals and discuss their advantages and disadvantages. We present colloidal crystals with bcc, fcc and exotic crystal structure and characterize their optical properties. José Marqués-Hueso and Hans Joachim Schöpe, Progr. Colloid. Polym. Sci. 134, 48*56 (2008) A. Barreira Fontecha, H. J. Schöpe, Phys. Rev. E. 77, Art. No. 061401(2008). R. Goldberg and H. J. Schöpe, Chem. Mat. 19, 6095-6100 (2007).