Directed self-assembly of a two-state block copolymer system

In this work, ladder-shaped block copolymer structures consisting of parallel bars, bends, and T-junctions are formed inside square confinement. We define binary states by the two degenerate alignment orientations, and study properties of the two-state system. We control the binary states by creatin...

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Detalles Bibliográficos
Autores principales: Do, Hyung Wan, Choi, Hong Kyoon, Gadelrab, Karim R., Chang, Jae-Byum, Alexander-Katz, Alfredo, Ross, Caroline A., Berggren, Karl K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2018
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6158142/
https://www.ncbi.nlm.nih.gov/pubmed/30467681
http://dx.doi.org/10.1186/s40580-018-0156-z
Descripción
Sumario:In this work, ladder-shaped block copolymer structures consisting of parallel bars, bends, and T-junctions are formed inside square confinement. We define binary states by the two degenerate alignment orientations, and study properties of the two-state system. We control the binary states by creating openings around the confinement, changing the confinement geometry, or placing lithographic guiding patterns inside the confinement. Self-consistent field theory simulations show templating effect from the wall openings and reproduce the experimental results. We demonstrate scaling of a single binary state into a larger binary state array with individual binary state control. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s40580-018-0156-z) contains supplementary material, which is available to authorized users.

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