Mechanical Relaxation of Organic Monolayer Films Measured by Force Microscopy

摘要

Using the newly developed interfacial-force microscope, we present results fromthe first measurements of the mechanical relaxation of a Au supported, self-assembled monolayer film interacting with a microscope tungsten tip. For a methyl-terminated n-alkanethiol film, we observe negligible adhesive film-tip interaction and complete passivation of tip-substrate bonding. The mechanical behavior of the film itself shows a time-dependent, elastic response.