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In this chapter we overview electric-field-induced effects on block copolymer microdomains. First, we will consider the thin film behavior and elucidate the parameters governing electric-field-induced alignment. We describe the structural evolution of the alignment in an electric field via quasi in situ scanning force microscopy (SFM) using a newly developed SFM setup that allows solvent vapor treatment...
The present contribution reviews novel insights into block copolymer phase behavior and nanostructure formation in confined geometries. We focus on state-of-the-art experimental and theoretical progress in this area, with an emphasis on characterization methods and techniques that provide a quantitative framework for fundamental analysis. We discuss and compare basic system parameters that are readily...
This contribution reviews recent findings on nonlithographic approaches for topographical structuring of polymeric surfaces and application of the resulting surfaces for creating hierarchical structures. External mechanical fields are used to induce a so-called buckling instability, which causes the formation of wrinkles with well-defined wavelength. We introduce the theoretical foundations of the...
We discuss and review a generalization of the usual hydrodynamic description of smectic A liquid crystals motivated by the experimentally observed shear-induced destabilization and reorientation of smectic A like systems. We include both the smectic layering (via the layer displacement u and the layer normal $$\hat{p}$$ ) and the director $$\hat{n}$$ of the underlying nematic order in...
We discuss the dynamic critical properties of a binary blend of the two polymers poly(dimethyl siloxane) (PDMS) and poly(ethyl-methyl siloxane) (PEMS), and we have investigated experimentally and theoretically patterning and structure formation processes above and below the spinodal in the case of a spatially varying temperature. Asymptotic critical scaling is found close to Tc in the range...
Foaming of multiphase blend systems can be identified as a promising approach to satisfy the steadily growing demand for cellular materials with enhanced properties. However, combining the sophisticated fields of polymer blends and polymer foams not only offers great chances, but also poses a significant challenge, as the multiphase characteristics of blends and the complexity of foam processing need...
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