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Effect of pH and hydration on the normal and lateral interaction forces between alumina surfaces
Interaction forces between alumina surfaces were measured using an AFM-colloid probe method at different pHs. For an α-alumina-sapphire system at acidic pH, the force curve exhibited a well-defined repulsive barrier and ...
Determination of electrostatic potential distribution by atomic force microscopy (AFM) on model silica and alumina surfaces in aqueous electrolyte solutions
AFM was employed as a physicochemical probe to determine the electrostatic potential distribution quantitatively on selected ideal oxide surfaces (quartz 0 0 0 1 and sapphire 0 0 0 1) in aqueous media. The force of interaction ...
Characterization of polysulfone based hemodialysis membranes by afm
Most of the hemodialysis membrane materials are hydrophobic in nature and allow protein adsorption on the surface easily due to hydrophobic interaction between membrane surface and protein molecules when in contact with ...