Dynamic adhesion due to fluid infusion

Wang, Yumo; Feng, Zhiquan; Fréchette, Joëlle

doi:10.1016/j.cocis.2020.101397

Cited by 10 publications

(9 citation statements)

References 73 publications

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“…In contrast, such motions do induce a lift force at first order in κ, due to the symmetry breaking of the contact geometry associated with the elastic deformation. Interestingly as well, normal motions generate a viscous adhesive force at first order in compliance (Wang, Feng & Frechette 2020).…”

Section: Forces and Torquementioning

confidence: 97%

Soft-lubrication interactions between a rigid sphere and an elastic wall

et al. 2021

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The motion of an object within a viscous fluid and in the vicinity of a soft surface induces a hydrodynamic stress field that deforms the latter, thus modifying the boundary conditions of the flow. This results in elastohydrodynamic interactions experienced by the particle. Here, we derive a soft-lubrication model, in order to compute all the forces and torque applied on a rigid sphere that is free to translate and rotate near an elastic wall. We focus on the limit of small deformations of the surface with respect to the fluid-gap thickness, and perform a perturbation analysis in dimensionless compliance. The response is computed in the framework of linear elasticity, for planar elastic substrates in the limiting cases of thick and thin layers. The EHD forces are also obtained analytically using the Lorentz reciprocal theorem.

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Section: Forces and Torquementioning

confidence: 97%

Soft-lubrication interactions between a rigid sphere and an elastic wall

et al. 2021

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“…Recently, there has been a great attention on application of elastohydrodynamic lubrication (soft lubrication) for a broad range of systems such as stereolithography and biological adhesion. 171,189,289–292 In this field of technology, experimental efforts showed that droplet impact dynamics on a soft material is governed by the elasticity of the soft material. 281,286,293–295 Similarly, it was reported that the droplet impact physics is effected by the mechanical deformation of the soft material via absorbing part of energy or due to the contact line dynamics.…”

Section: Droplet Impact On Soft Smooth Substratesmentioning

confidence: 99%

“…The Cassie-Baxter model was applied to a droplet shape on a material with chemical and roughness heterogeneity. 68,69,72,135,166–199…”

Section: Introductionmentioning

confidence: 99%

Physics of droplet impact on flexible materials: A review

Karim

2022

Advances in Mechanical Engineering

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Droplet impact on a flexible substrate is a prevalent phenomenon in nature and various advanced technologies such as soft bio-printing, tissue engineering, smart biomaterials and flexible electronics. Recent rapid advancement in new functional surfaces, ultra-high-speed imaging, nanotechnology, deep learning, advanced computational strength and the relation between fluid dynamics and interfacial science have intensified the physical understanding of droplet impact on soft materials. Once a droplets impacts on a solid surface, it deposits, spreads, rebounds or splashes. Given the importance of the droplet impact onto soft substrates in biotechnology, medicine and advanced flexible electronics, a deep physical understanding of such complex phenomenon is vital. This review initially presents the liquid-solid interaction physics and relevant interfacial science. Next, this review discusses the physics of droplet impact on soft materials with different physical and interfacial characteristics. Moreover, this review presents advancements in droplet impact on elastic materials relevant to new technologies such as soft electronics, elastic smart biomaterials, tissue engineering and the fight against COVID-19 pandemic. Finally, this review lays out future research directions related to current problems in such complex physical phenomenon.

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“…Over recent years there has been an emerging interest in how soft materials influence capillary flows (Bico, Reyssat & Roman 2018;Andreotti & Snoeijer 2020). Problems involving elastohydrodynamic lubrication, also known as soft lubrication (Skotheim & Mahadevan 2005;Essink et al 2021), are also critical for a wide variety of systems ranging from stereolithography to biological adhesion (Wang et al 2017;Chan & Carlson 2019;Wang, Feng & Frechette 2020). In this context, experiments have demonstrated that the dynamics of drop impacts can be controlled by the softness of the solid (Pepper, Courbin & Stone 2008;Chen & Li 2010;Chen et al 2016;Howland et al 2016;Langley, Castrejón-Pita & Thoroddsen 2020).…”

Section: Introductionmentioning

confidence: 99%

Droplet settling on solids coated with a soft layer

Poulain

Carlson

2022

J. Fluid Mech.

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Gravitational settling of a droplet in air onto a soft substrate is a ubiquitous event relevant to many natural processes and engineering applications. We study this phenomenon by developing a three-phase lubrication model of droplet settling onto a solid substrate coated by a thin soft layer represented by a viscous film, an elastic compressible layer and an elastic sheet supported by a viscous film. By combining scaling analysis, analytical methods and numerical simulations we elucidate how the resulting droplet dynamics is affected by the nature of the soft layer. We show that these soft layers can significantly affect the droplet shape during gravitational settling. When there is a linear response of the deformations of the soft layer, the air layer takes longer to drain as compared with the case of a droplet settling onto a rigid substrate. Our results provide new insight into the coupled interactions between droplets and solids coated by a thin film of a soft material.

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Dynamic adhesion due to fluid infusion

Cited by 10 publications

References 73 publications

Soft-lubrication interactions between a rigid sphere and an elastic wall

Soft-lubrication interactions between a rigid sphere and an elastic wall

Physics of droplet impact on flexible materials: A review

Droplet settling on solids coated with a soft layer

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