Surface force interactions between micrometer-size polystyrene spheres and silicon substrates using atomic force techniques
1994
The surface force interactions between a single micrometer-size polystyrene sphere and a p-type silicon substrate were investigated using atomic force microscope techniques. The force of removal and the degree of deformation of the particle determined as a function of the applied loading force. The work of removal, estimated assuming a perfectly spherical particle and a smooth substrate, was also determined. The influence of surface contamination and the implications of the short contact times used in these experiments are discussed.
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