Figure 2
X-ray microscope images recorded at 1000 eV showing aggregates of 50 nm-sized magnetite particles in a liquid polydimethylsiloxane matrix (a), repeated after 12 min (b), and their reorganization after shear (c). After loading the sample this sample area has already been scanned six times beforehand, demonstrating that even after several scans no significant cross-linking could be detected, i.e. the PDMS matrix is still liquid-like. The area marked in white has been cross-linked prior to the experiment and serves as a reference region. |