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Published online by Cambridge University Press: 22 March 2016
The Shuttleworth effect ensures that at an interface, where one of the phases isan elastic solid, surface stress is not equal to the surface energy. In thispaper, we provide a free energy based approach to quantify the impact of theShuttleworth effect in the adhesion of a rigid, spherical particle on an elasticsolid. Our paper has four key findings. Firstly, we demonstrate that thedifference in the elastic-solid-particle surface stress and surface energies islinearly proportional to the adhesion energy. Secondly, we establish that thesurface stresses being larger than the surface energies provide the sufficientcondition for an energetically favorable adhesion. Thirdly, we show that for agiven adhesion energy and solid-vapor surface energy increase in particle-vaporsurface energy makes the adhesion, in presence of the Shuttleworth effect, morefavorable. Finally, and most importantly, we identify the necessary parameterspace corresponding to which the Shuttleworth effect may or may not enhance theadhesion as compared to the case that does not account for the Shuttlewortheffect. We anticipate that our findings will significantly impact ourunderstanding of a plethora of problems involving adhesion and indentation onsoft surfaces, such as nanoparticle adhesion on cells, nanoindentation basedcharacterization of soft solids, applications of adhesion-based soft lithographytechniques, etc.