Proceedings of scanning 98 Baltimore, Maryland, USA

Abstract

at ambient conditions (the whole tunneling region embedded within the isotropic phase of a liquid crystal) (Walzer and Hietschold 1996), but the tunneling spectroscopy shows only very weakly developed features in this case.A combined scanning tunneling microscopy (STM) and atomic force microscopy study has illustrated several aspects and roles of alkanethiolate self-assembled monolayers (SAM) (and tail-functionalized alkanethiolate SAM) in nanochemistry. These include strategies for preparation of SAMs with a high degree of perfection on nanometer length scales, and the nature and relative stability of different polymorphs of SAMs. In addition, the role of ultra-low current (<1 pA) STM in imaging and lithography operations on SAMs will be discussed. Proceedings of SCANNING 98 133 the sample is at least as great as that of an FFM pushing on the surface with a 30 nN force.