From: Gerd Kaupp
Date: 26 Jul 2000
Time: 13:23:31
Remote Name: kaupp.chemie.uni-oldenburg.de
Usually the surfaces are scanned without any pretreatments and that is most advantageous. They must be fixed in some way. Crystals, polymers, biological samples can be glued to any support. Microcrystals require search for reasonably flat-lying planes. Nanoparticles can be covered with about 5 nm of standard resin. Even then, AFM still gives the shape and SNOM gives the optical contrast if the resin is transparent as usual. We had nice SNOM fluorescence contrasts, could study the type of aggregation of nanoparticles and determined the depth of the resin cover. All of that can be found at my homepage or at the links in my poster. Gerd