Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: POSTER: Colloids and Nanoparticles

CPP 9.13: Poster

Montag, 26. März 2007, 16:00–18:00, Poster B

An Investigation of Precipitated Silica using Transmission Electron Microscope Tomography — •Benjamin Georg Greiner, Gerald Johannes Schneider, and Dietmar Göritz — Institut für Physik, Universität Regensburg, 93040 Regensburg

In general the morphology of active fillers is investigated using transmission electron microscopy. However, only projections of the samples are accessible. Thus, one can not differentiate between a disc-like or a spherical structure. In order to obtain such information we investigated precipitated silica using different tilt angles between the sample and the wave vector of the incident electron beam and reconstructed a three dimensional volume of the object. This method, denoted as electron tomography, allows a detailed investigation of the structure of objects at a length scale of a few nanometers. In particular a detailed investigation of the shape is possible.