Colloid Probe Characterization: Radius and Roughness Determination
In the last 10 years the atomic force microscope (AFM) has routinely been applied to the direct measurement of surface forces. A particle is often attached to the tip of the force-sensing cantilever in order to control the chemistry and the geometry of the interaction. Usually a spherical particle (colloid probe) is employed, and the measured interaction force is normalized by the radius, enabling comparisons to be made with both theory and other techniques. Here we report a simple method for...[Show more]
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