Contact Instability in Adhesion and Debonding of Thin Elastic Films
Manoj Gonuguntla, Ashutosh Sharma, Jayati Sarkar, Subash A. Subramanian, Moniraj Ghosh, Vijay Shenoy
Abstract
Based on experiments and 3-D simulations, we show that a soft elastic film during adhesion and debonding from a rigid flat surface undergoes morphological transitions to pillars, labyrinths and cavities, all of which have the same lateral pattern length scale, close to λ/H ~ 3 for thick films, H > 1 micrometer. The linear stability analysis and experiments show a new thin film regime where λ/H ≈ 3+ 2 (γ/3 μH)(1/4) (γis surface tension, μis shear modulus) because of significant surface energy penalty (for example, λ/H = 6 for H = 200 nm; μ= 1MPa).
Create a lesson
Related papers
Nonparametric multiscale modeling of boundary lubrication: hexadecane in highly pressurized gold asperity contacts
Hannes Holey, Michael Moseler, Peter Gumbsch et al.
Asymmetric Ions in Solution are Similar to Active Brownian Particles
Setare Mostajabi Sarhangi, Dmitry V. Matyushov
Influence of twist direction and large deformation on soft material torsional contact
Yucai Hu, Pengfei Li, Michele Ciavarella et al.
Phase transitions and microphases in elastomers. II. Anisotropy-driven morphologies
Manu Mannattil, David Andelman, Haim Diamant
Comparing non-local granular fluid continuum models for silo discharge: Toward clogging prediction
Y. Zhou, Y. Wang, M. Li et al.
Residual semi-crystalline particles released during enzymatic degradation of plastics
Michael Schindler, Ludwik Leibler