Pawel W. Majewski, Manesh Gopinadhan and Chinedum O. Osuji Magnetic field alignment of block copolymers and polymer nanocomposites: Scalable microstructure control in functional soft materials Journal of Polymer Science Part B: Polymer Physics 50
Alignment of block copolymer microdomains and polymer nanocomposites in mechanically robust films on large length scales (1 mm–1 m) over short timescales (<1 h) remains a significant challenge in the practical implementation of these functional soft materials. This is particularly the case where vertical alignment is desired. In this perspective, we highlight the utility and flexibility of magnetic fields for controlling alignment in such systems. Under appropriate conditions, near single-crystal materials can be readily produced over large areas, offering a route to truly scalable microstructure control.
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