Journal
NANOSCALE
Volume 8, Issue 6, Pages 3268-3273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr09140c
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Funding
- National Natural Science Foundation of China [51272010, 51472018]
- Beijing Nova Program [XX2013009]
- Research Fund for the Doctoral Program of Higher Education [20121102120001]
- Program for New Century Excellent Talents in University [NCET-12-0035]
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The orientation transition from perpendicular to parallel alignment of PEO cylindrical domains of PEO-b-PMA(Az) films has been demonstrated by extruding the block copolymer (BCP) solutions through a micropore of a plastic gastight syringe. The parallelized orientation of PEO domains induced by this micropore extrusion can be recovered to perpendicular alignment via ultrasonication of the extruded BCP solutions and subsequent annealing. A plausible mechanism is proposed in this study. The BCP films can be used as templates to prepare nanowire arrays with controlled layers, which has enormous potential application in the field of integrated circuits.
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