Plenarvorträge - DPG-Tagungen

Symposium Functional Nanoparticles Dienstag
ing. Other nanoscale dispersions are useful for highly polished surfaces
as, e.g., microchips. The combination of electrical conductivity and optical
transparency is a great challenge in further developments of plastics.
Nanoscaled indium-tin-oxide is being developed for use as a raw material
for these applications. In cancer therapy, nanomaterials are of great
interest. Superparamagnetic nanoparticles of iron oxide could be helpful
to destroy tumors when using fast changing magnetic fields.
Hauptvortrag SYNP 2.4 Di 12:50 H1
Nanomaterials in Industrial Applications — •Ralf Anselmann,
V. Hilarius, G. Pfaff, M. Kursawe, and H. Winkler — Merck
KGaA, D-64271 Darmstadt, Germany
The lecture gives an overview on materials with nanostructures in at
least one dimension. It describes the results of many years of research
done in the Chemicals divisions of Merck. Most of the materials are com-
mercially very successful products. Included are examples of materials
such as:
1. Platelets: Uncoated mica platelets as fillers for cosmetics to improve
the skin feeling of formulations. Mica platelets, which are coated with
metal oxides (pearlescent pigments), where the interaction of the metal
oxide layers with light yields interference colours. Multilayer coatings of
metal oxides on mica with tunable optical and electrical characteristics.
Silica and alumina flakes coated with metal oxides for special optical
effects.
2. Silica spheres: Uncoated as fillers for cosmetics to influence skin feeling
and viscosity of formulations. Coated with inorganic nano materials
to impart colour and good skin feel or hide wrinkles by controlled light
scattering. Monodisperse silica spheres.
3. Ordered structures made from spheres, photonic materials.