Reversible morphology control of three-dimensional block copolymer nanostructures by the solvent-annealing-induced wetting in anodic aluminum oxide templates |
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Authors: | Chiang-Jui Chu Ming-Hsiang Cheng Pei-Yun Chung Mu-Huan Chi Kai-Sheng Jeng |
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Affiliation: | Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan |
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Abstract: | In this work, the authors study the fabrication of three-dimensional block copolymer nanostructures in which the morphologies can be reversibly controlled. Polystyrene-block-polydimethylsiloxane (PS-b-PDMS), a promising candidate for nanolithography, is introduced into cylindrical nanopores of anodic aluminum oxide (AAO) templates using a solvent annealing–induced nanowetting in templates (SAINT) method. Not only the morphologies of the infiltrated PS-b-PDMS nanostructures can be tuned by the annealing solvents, but also the solvent-vapor-controlled morphologies can be altered reversibly by annealing the samples repeatedly between different solvent vapors. |
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Keywords: | Block copolymer self-assembly solvent vapor annealing template wetting |
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