Frictional properties of molecular thin films
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In this paper, we discuss the frictional behaviour of molecular thin films on a mica surface at a nanometre scale. Carbon 60 (C60)-based macromolecules were synthesized experimentally. Analytical techniques such as Fourier transform infrared spectroscopy, UV-VIS spectroscopy and gel permeation chromatography were used to analyze the synthesized product. The Langmuir-Blodgett technique was used in making the macromolecules in the thin film on the mica surface. Atomic force microscopy and friction force microscopy were used for surface characterization. The properties, novel structures and their effects on frictional properties are discussed based on experiment results. It is found that the molecular thin films can be transferred onto the mica surface. These thin films possess significant tribological properties. Copyright 2001 John Wiley & Sons, Ltd.