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Creasing in microscale, soft static friction

Author

Listed:
  • Justin D. Glover

    (University of Kentucky)

  • Xingwei Yang

    (University of Colorado Boulder)

  • Rong Long

    (University of Colorado Boulder)

  • Jonathan T. Pham

    (University of Kentucky
    University of Cincinnati)

Abstract

Utilizing colloidal probe, lateral force microscopy and simultaneous confocal microscopy, combined with finite element analysis, we investigate how a microparticle starts moving laterally on a soft, adhesive surface. We find that the surface can form a self-contacting crease at the leading front, which results from a buildup of compressive stress. Experimentally, creases are observed on substrates that exhibit either high or low adhesion when measured in the normal direction, motivating the use of simulations to consider the role of adhesion energy and interfacial strength. Our simulations illustrate that the interfacial strength plays a dominating role in the nucleation of a crease. After the crease forms, it progresses through the contact zone in a Schallamach wave-like fashion. Interestingly, our results suggest that this Schallamach wave-like motion is facilitated by free slip at the adhesive, self-contacting interface within the crease.

Suggested Citation

  • Justin D. Glover & Xingwei Yang & Rong Long & Jonathan T. Pham, 2023. "Creasing in microscale, soft static friction," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38091-7
    DOI: 10.1038/s41467-023-38091-7
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    References listed on IDEAS

    as
    1. P. Ciarletta, 2018. "Matched asymptotic solution for crease nucleation in soft solids," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    2. Robert W. Style & Callen Hyland & Rostislav Boltyanskiy & John S. Wettlaufer & Eric R. Dufresne, 2013. "Surface tension and contact with soft elastic solids," Nature Communications, Nature, vol. 4(1), pages 1-6, December.
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