Terry Turney, Director of CSIRO's Nanotechnology Centre and Science Director for New Materials within its Manufacturing division, will present the following seminar from the Pacific Rim Conference in Nanoscience (7-11 September 2004). The seminar will be available for viewing and discussion through the internanotech Community at http://nanotech.colayer.net/
Functional Interfaces and Nanostructures
The study, design and control of interfacial phenomena are just as important to the application of nanotechnology for practical outcomes as they are to its scientific understanding. This talk will examine the properties of tailored nanoparticles and their effect on nanocomposite properties.
Nanoparticles of ZnO exhibit a correlation between particle size and photochemical activity, with controlled doping allowing the modification of both photochemical and biological activity. A range of nanocomposites, produced by nanoparticle dispersion into polymers, has found application in UV-resistant composites, nucleating agents for polyolefins, coatings and gas barrier membranes.
Addition of nanoparticles to a polymer can selectively modify chain packing allowing hybrid membranes with increased diffusion coefficients and even selective passage of larger molecules through the membrane rather than smaller molecules. The interaction between the inorganic domains and the polymer chains is important to tuning these hybrid properties.
internanotech Community: http://nanotech.colayer.net/
Blog On Nanotechnology - Nanomosis: http://barryhardy.blogs.com/nanomosis/