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Graphoepitaxy of Spherical Domain Block Copolymer Films
Author(s) -
Segalman R. A.,
Yokoyama H.,
Kramer E. J.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200108)13:15<1152::aid-adma1152>3.0.co;2-5
Subject(s) - copolymer , materials science , polystyrene , layer (electronics) , spheres , nanotechnology , composite material , polymer , physics , astronomy
The long‐range order of spherical block copolymer films is greatly improved if the underlying surface has been etched to form wells and mesas. Epitaxial growth of polystyrene/poly(2‐vinylpyridine) block copolymers on SiO 2 with structures 1–10 μm wide yields single‐crystal‐like structures on top of the mesas (see Figure), and in the wells, provided the height of the mesas exceeds one layer of copolymer spheres (27 nm). (See also inside front cover.)