Dewetting applications

Spreading dynamics plays a key role in numerous applications. However, controlling the dewetting of liquids may be potentially more important for some industrial uses. 

The theory of viscoelastic braking in liquid spreading exposes the various possibilities that may exist for controlling wetting or dewetting speeds by changing solid rather than liquid properties. Applications may exist in the fields of contact lenses, printing, and vehicle tire adhesion. 

Applications of Dewetted Structures in Oi anic Photonics and Electronics... 

Applications of Dewetted Structures in Organic Photonics and Electronics 197... 

Yield stress is crucial in design applications since when yield stress is exceeded, separation or dewetting takes place between the PVC binder and the oxidizer or other solids in the propellant (3). The burning surface progresses abnormally rapidly into zones of such overstress causing an excessive rate of gasification and consequent abnormal pressure-time and thrust-time curves. Specific data are normally developed, therefore, to support the design application of each formulation. 

Considerable interest still exists in the application of fluorine-containing cyclophosphazenes in lubricant technology. Recent advances in the use of N3P3(OC6H4F-4) (OC6H4CF3-3)6-n (n 2 code name X-IP) as lubricant either by itself or as an additive to perfluoropolyethers (PFPE) have been reviewed. Addition of X-IP to PFPE films reduces the critical dewetting thickness on amorphous nitrogenated carbon compared to that of neat PFPE. The influence of X-IP on the stabilization of the PFPE lubricant for the slider/disk interface in hard disk drives has been studied. Micro-phase separation of X-IP... 

The dewetting films above were treated as a continuum, i.e a fluid without (micro)structure. However, in most applications the coating fluids are suspensions which contain particles and often macromolecules. The fluids also behave as non-Newtonian. 

When a polymer solution is allowed to evaporate from a surface, dewetting instabilities can arise, producing modulated patterns like spinodal structures (68). Section IV addresses the applicability of these interesting phenomena to making opto-electronical devices. 

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