scholarly journals Nucleated dewetting in supported ultra-thin liquid films with hydrodynamic slip

Soft Matter ◽  
2017 ◽  
Vol 13 (27) ◽  
pp. 4756-4760 ◽  
Author(s):  
Matthias Lessel ◽  
Joshua D. McGraw ◽  
Oliver Bäumchen ◽  
Karin Jacobs
Keyword(s):  
Boundary Condition ◽  
Surface Energy ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Thin Polymer Films ◽  
Breakup Mechanism ◽  
Thin Polymer ◽  
Hydrodynamic Slip ◽  
Liquid Boundary ◽  
Solid Liquid

This study reveals the influence of the surface energy and solid/liquid boundary condition on the breakup mechanism of dewetting ultra-thin polymer films.

scholarly journals Sliding fluids: Dewetting experiments reveal the solid/liquid boundary condition

2010 ◽  
Vol 216 ◽  
pp. 012002 ◽  
Author(s):  
Oliver Bäumchen ◽  
Matthias Lessel ◽  
Renate Fetzer ◽  
Ralf Seemann ◽  
Karin Jacobs
Keyword(s):  
Boundary Condition ◽  
Liquid Boundary ◽  
Solid Liquid

The Effect of Short and Long Range Interactions on Break up and Dewetting of Thin Polymer Films

1991 ◽  
Vol 248 ◽  
Author(s):  
Gtonter Reiter
Keyword(s):  
Average Distance ◽  
Substrate Surface ◽  
Liquid Films ◽  
Recent Theory ◽  
Thin Polymer Films ◽  
Dewetting Process ◽  
Thin Polymer ◽  
Long Range Interactions ◽  
Cylindrical Holes ◽  
Break Up

AbstractWe report investigations of instabilities of thin polystyrene films (< 100 nm). In the liquid state films break up by creating cylindrical holes. The average distance between holes is approx. proportional to the film thickness squared. This dependence compares well with the prediction of a recent theory on spinodal decomposition of thin liquid films. The subsequent dewetting process (=growth of holes) depends strongly on the composition of the substrate surface whereas the break up does not seem to be influenced by this surface. The importance of long and short range interactions in this context is discussed.

scholarly journals Influence of bidisperse self-assembled monolayer structure on the slip boundary condition of thin polymer films

2017 ◽  
Vol 146 (20) ◽  
pp. 203326 ◽  
Author(s):  
Joshua D. McGraw ◽  
Mischa Klos ◽  
Antoine Bridet ◽  
Hendrik Hähl ◽  
Michael Paulus ◽  
...  
Keyword(s):  
Boundary Condition ◽  
Polymer Films ◽  
Slip Boundary Condition ◽  
Thin Polymer Films ◽  
Self Assembled Monolayer ◽  
Slip Boundary ◽  
Thin Polymer ◽  
Self Assembled

Instability and Pattern Formation of Thin Liquid Films Sandwiched between Soft Elastomer Layers

2013 ◽  
Vol 745-746 ◽  
pp. 417-423
Author(s):  
Ling Qiao ◽  
Fu Ying Tan
Keyword(s):  
Growth Rate ◽  
Fluid Layer ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Wave Number ◽  
Critical Wave Number ◽  
Periodic Surface ◽  
Surface Buckling ◽  
Solid Liquid ◽  
Soft Elastomer

The surface instability of trilayer films consisting of a fluid layer sandwiched in between the two thin elastomer capping layers was studied. The solid-liquid-solid sandwiched films will form well-defined periodic surface buckling spontaneously. In the present study, the flow of the sandwiched liquid layer was approximated by the theory of lubrication. The elastic capping films was modeled with the nonlinear theory of a thin plate. A linear stability analysis identified the growth rate and the critical wave number of the surface undulation of trilayer films. The analysis showed that applied deformation in the capping layers regulated the surface buckling and resulted in well-defined periodic surface corrugation with tunable wavelength. The result of this study may provide a mechanism to control the morphology of the films in a mechanical way.

Is the chain dynamics in thin polymer films isotropic ?

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-233-Pr7-237 ◽  
Author(s):  
S. Rivillon ◽  
P. Auroy ◽  
B. Deloche
Keyword(s):  
Polymer Films ◽  
Thin Polymer Films ◽  
Chain Dynamics ◽  
Thin Polymer

Surface Modification of Poly (alkyl/Arylphosphazene) Thin Films

2000 ◽  
Vol 629 ◽  
Author(s):  
John V. St. John ◽  
Patty Wisian-Neilson
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Chemical Resistance ◽  
Chemical Properties ◽  
Inorganic Polymers ◽  
Thin Polymer Films ◽  
Hydrophilic Interactions ◽  
Carboxylic Acid Groups ◽  
Polymer Interface ◽  
Thin Polymer

ABSTRACTPoly (methylphenylphosphazene) (PMPP) is an example of a unique class of inorganic polymers with alternating – (P=N)– backbones. Chemical modification of bulk PMPP can result in changes of physical properties such as chemical resistance, onset temperature of thermal degradation, elasticity, and flexibility. Surface modification of PMPP allows tailoring of the chemical properties at the polymer interface while maintaining the integrity of the bulk polymer. In this research, PMPP thin films were treated to form carboxylate or carboxylic acid groups at the surface. Surface modification was monitored by following changes in contact angle. The hydrophobic/hydrophilic interactions of carboxylated PMPP surfaces allow for mesoscale interactions of thin polymer films.

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