Effect of the density of pillar-patterned substrates on contact mechanics: Transition from top to mixed contact with a detailed pressure-field description.

@article{LedesmaAlonso2021EffectOT,
  title={Effect of the density of pillar-patterned substrates on contact mechanics: Transition from top to mixed contact with a detailed pressure-field description.},
  author={Ren{\'e} Ledesma-Alonso and E. Raphael and F. Restagno and Corinne Poulard},
  journal={Physical review. E},
  year={2021},
  volume={104 5-2},
  pages={
          055007
        }
}
Different contact regimes between a spherical lens and a periodically patterned substrate are observed, when they are pressed against each other. Top contact occurs when only the highest substrate sections touch the lens, whereas mixed contact implies that both the highest and the lowest substrate sections come into contact with the lens. In this paper, we study how the pattern density of the substrate, along with its physical properties and those of the lens, determine the transition from top… 

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