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Geckos and some insects can easily adhere to and detach from surfaces with micro/nanoscale hair structures on their foot, called setae and spatulas. Here, a model is developed to describe the detachment of the seta. In this model, the seta is assumed to be a beam whose tip adheres to a surface. When normal and tangential forces are applied to the root of the beam, a moment is generated at the contact...
Adhesion between the lower surface of an elastic beam and the flat surface of a substrate during a loading–unloading cycle is experimentally investigated. In the presence of adhesion, it has been theoretically explained that the force curve for the loading and the unloading coincides with each other because reversible thermodynamic work of adhesion, which is the work to separate a unit area of the...
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