منابع مشابه
Wetting: Contact with what?
news & views between the two surfaces (as shown by the laminated array withstanding pinching and twisting in the left inset of Fig. 1), and reduces discomfort to the user, who eventually will not feel the presence of the device on the skin. The researchers also show that the arrays can be mounted on microperforated elastomeric substrates, enabling perspiration of the tissues and allowing temper...
متن کاملFirst-order wetting transition at finite contact angle.
The wetting of a polymer brush by a melt of similar chains can have a window of complete wetting with a classical allophobic wetting transition at low grafting density sigma and an autophobic one at high sigma. However, when the melt chains are much longer than the brush chains, the contact angle alpha goes through a nonzero minimum where partial differential alpha/ partial differential sigma h...
متن کاملThe wetting problem of fluids on solid surfaces: Dynamics of lines and contact angle hysteresis
In 1805, Young was the first who introduced an expression for contact angle in static, but today, the motion of the contact-line formed at the intersection of two immiscible fluids and a solid is still subject to dispute. By means of the new physical concept of line viscosity, the equations of motions and boundary conditions for fluids in contact on a solid surface together with interface and c...
متن کاملAnalysis of Wetting and Contact Angle Hysteresis on Chemically Patterned Surfaces
The wetting and contact angle hysteresis on chemically patterned surfaces in two dimensions are analyzed from a stationary phase-field model for immiscible two phase fluid. We first study the sharp interface limit of the model by the method of matched asymptotic expansions. We then justify the results rigorously by the Γ-convergence theory for the related variational problem and study the prope...
متن کاملThe wetting problem of fluids on solid surfaces. Part 2: the contact angle hysteresis
Abstract In part 1 (Gouin, [13]), we proposed a model of dynamics of wetting for slow movements near a contact line formed at the interface of two immiscible fluids and a solid when viscous dissipation remains bounded. The contact line is not a material line and a Young-Dupré equation for the apparent dynamic contact angle taking into account the line celerity was proposed. In this paper we con...
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ژورنال
عنوان ژورنال: Journal of Coal Chemistry
سال: 2021
ISSN: 1681-309X
DOI: 10.31081/1681-309x-2021-0-1-4-10