modeling of the intermolecular force-induced adhesion in freestanding nanostructures made of nano-beams

among the intermolecular interactions, the casimir and van der waals forces are the most important forces that highly affect the behavior of nanostructures. this paper studies the effect of such forces on the adhesion of cantilever freestanding nanostructures. the nanostructures are made of a freestanding nano-beam which is suspended between two upper and lower conductive surfaces. the linear spring model is applied to derive the elastic force. the lumped parameter model (lpm) is used to obtain constitutive equations of the systems. the maximum length of the nano-beam which prevents the adhesion is computed. results of this study are useful for design and development of miniature devices.