The deformation and adhesion of randomly rough and patterned surfaces

Article Abstract:

The effects of surface roughness on the deformations and loading and unloading forces of various polymeric surfaces were studied. The results show that depending on the nature of the roughness and also the load time some polymer surfaces may exhibit a roughness-dependent adhesion but a sharp roughness-independent repulsive regime while others a=having the same RMS roughness may exhibit an adhesion that is largely independent of the roughness.

Polymers, Atomic properties

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Internal ceramic reconstruction weakens metal-ZrO2 adhesion

Article Abstract:

The mechanisms that control at the quantum level the adhesion of metals to ZrO2 are studied on the basis of density functional theory calculations of the Ni/c-ZrO2 interface. Results indicate that the interface fragility is inherently connected to the ability of the ceramic matrix to locally reconstruct from the stabilized cubic structure toward the more stable low temperature phases.

Usage, Density functionals, Density functional theory, Zirconium oxide, Chemical properties

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Interaction and deformation of elastic bodies: origin of adhesion hysteresis

Article Abstract:

The deformation and adhesion of soft elastic particles interacting with a Lennard-Jones potential is obtained by solving self-consistently the elasticity equations. Hysteresis is demonstrated between loading and unloading, and the pull-off force or maximum adhesion is shown to increase and eventually to saturate as the maximum applied load is increased.

Analysis, Observations, Hysteresis, Hysteresis (Physics), Deformations (Mechanics), Deformation

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