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CPP: Chemische Physik und Polymerphysik

CPP 11: Colloids and Nanoparticles I

CPP 11.3: Vortrag

Montag, 8. März 2004, 14:30–14:45, H 39

Probing gradient noble metal nano-cluster surfaces with high spatial resolution grazing incidence small-angle x-ray scattering — •S.V. Roth¹, H. Walter², M. Burghammer¹, C. Riekel¹, and P. Müller-Buschbaum³ — ¹ESRF, B.P. 220, F-38043 Grenoble Cedex, France — ²november AG, Ulrich-Schalk-Str. 3, D-91056 Erlangen, Germany — ³TU München Physik Department LS E13, James-Franck-Str.1, D-85747 Garching, Germany

Noble metal nanometer-sized cluster layers play an important role in many technological and scientific applications, e.g. biomedical analysis. Especially for property optimization it is necessary to vary the structure and morphology of the cluster layer and to produce laterally heterogeneous multilayer systems. We present a novel approach to characterize non-destructively laterally heterogeneous nanostructured multilayers based on grazing incidence small-angle x-ray scattering (GISAXS). This new method called µGISAXS combines the advantages of micrometer spatial resolution by using a 5µm-sized x-ray beam with the well-known order-of-magnitude increase in q-resolution of GISAXS method [1,2]. This renders µGISAXS a powerful method to scan inhomogeneous surfaces on a micrometer scale. We applied µGISAXS to investigate the morphological changes of novel gradient noble metal cluster/polymer multilayer systems, produced by different procedures.

[1] P. Müller-Buschbaum et al., Europhys. Lett. 61 639 (2003)

[2] S.V. Roth et al., Appl. Phys. Lett. 82 1935 (2003)