“…[36][37][38][39] Such contradictions are expected because the Flory-Rehner model has been shown to severely underestimate the volumetric elasticity of the polymer network. 40 In the lack of an accurate compressible constitutive model for polymer networks, here we use the classical compressible neo-Hookean model to qualitatively illustrate the effect of network compressibility. 41 We tune the Poisson's ratio between n = 0 to 0.5 and repeat the simulations for the elastocapillary and osmocapillary cases.…”
Actively tuning surface topography is crucial for the design of smart surfaces with stimuli-responsive friction, wetting, and adhesion properties. This paper studies how elastocapillary deformation and osmocapillary phase separation can...
“…[36][37][38][39] Such contradictions are expected because the Flory-Rehner model has been shown to severely underestimate the volumetric elasticity of the polymer network. 40 In the lack of an accurate compressible constitutive model for polymer networks, here we use the classical compressible neo-Hookean model to qualitatively illustrate the effect of network compressibility. 41 We tune the Poisson's ratio between n = 0 to 0.5 and repeat the simulations for the elastocapillary and osmocapillary cases.…”
Actively tuning surface topography is crucial for the design of smart surfaces with stimuli-responsive friction, wetting, and adhesion properties. This paper studies how elastocapillary deformation and osmocapillary phase separation can...
“…For example, the transparency of fluorogel can be varied from opaque to transparent by changing its degree of swelling; 2 reversible and strong adhesion can be achieved between less swollen hydrogels due to osmocapillary adhesion. 42 And it is well-established that adhesion will affect friction. This study explains the mechanism behind these applications.…”
Osmocapillary phase separation can pull solvent out from a gel surface and lead to length-dependent surface flattening. The osmocapillary flattening can be orders of magnitude larger than the existing studies of elastocapillary flattening.
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