Final dewetting patterns

Figure 6. Optical micrographs of the final dewetting patterns at 18(fC (A) polygons for a 29nm thick film, (B) polygons and random droplets for a 6nm thick film. The width of micrograph is 730pm (A), 186pm (B) respectively.

In summary, the methods bom in recent decades to pattern polymer films by means of an underlying templated substrate have grown in sophistication and flexibility. These techniques harness the natural tendencies of polymer Aims to dewet and phase separate, and through a simple means guide these natural processes. In all cases, the template and the desired stmcture must be matched to the properties of the polymer film and the processing conditions, but the final Alms can exhibit a variety of designs over many length scales. 

Figure 11.7 The influence of pattern dimension on the final morphology (aligned, partially aligned and random droplet arrays) of structures resulting from dewetting of a 12 nm-thick PS film. Optical micrographs and insets show transition from the doublet state (15-12 pm stripe width), to coalescence (9 pm), confinement (6 and 3 pm), and a...

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