Determination of the rate-dependent adhesion of polydimethylsiloxane using an atomic force microscope
Alessandra Petroli, Mario Petroli, Marcello Romagnoli, Mark Geoghegan
Abstract
A JKR (Johnson-Kendall-Roberts) formalism is used to extract the Young modulus, the contact radius, and the energy release rate simply from the retraction curve of a borosilicate glass colloidal probe from a polydimethylsiloxane (PDMS) surface using an atomic force microscope. PDMS samples ranged from perfectly elastic to those with incipient viscoelasticity. The dependence of the release rate energy with the crack speed is verified using a fracture mechanics-based method.
Topics & Concepts
PolydimethylsiloxaneBorosilicate glassMaterials scienceViscoelasticityAtomic force microscopyComposite materialElastic modulusStrain energy release rateSurface energyRADIUSMicroscopeFracture mechanicsNanotechnologyOpticsComputer sciencePhysicsComputer securityForce Microscopy Techniques and ApplicationsAdhesion, Friction, and Surface InteractionsMechanical and Optical Resonators