By J. Drelich, Kash L. Mittal
Seeing that its discovery, Atomic strength Microscopy (AFM) has develop into a strategy of selection for non-destructive floor characterization with sub-molecular answer. The AFM has additionally emerged as a problem-solving software in purposes correct to particle-solid and particle-liquid interactions, layout, fabrication, and characterization of recent fabrics, and improvement of latest applied sciences for processing and amendment of fabrics. This quantity is a complete evaluate of AFM thoughts and their program in adhesion stories.
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Additional info for Atomic Force Microscopy in Adhesion Studies
Additionally, steric, hydrodynamic and frictional forces may also need to be considered in specific systems. The understanding of most industrially relevant phenomena such as particle adhesion and dispersion are based on the DLVO theory and other contact mechanics models such as the Hertz model , the Johnson-Kendall-Roberts (JKR) model  and the Derjaguin-Muller-Toporov (DMT) model [ 5 ] . The first systematic attempt at understanding the role of roughness in the interaction forces was made in terms of the Rumpf model .
S. Grierson et al. Figure 1. Interaction forces (per unit area) for the Hertz, JKR and DMT models, compared to an actual interaction. There is no attractive force in the Hertz model, only hard wall repulsion at contact. The JKR model includes short-range adhesion that is essentially a delta function with strength y , and thus only acts within the contact zone. The DMT curve shown represents a long-range surface force. A volume integrated force, like the van der Waals force, can also lead to a DMT dependence, where the contact profile remains Hertzian and the attractive forces act like an additional external load.
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