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Emergent symmetries in block copolymer epitaxy
The directed self-assembly (DSA) of block copolymers (BCPs) has shown promise in fabricating customized two-dimensional (2D) geometries at the nano- and meso-scale. Here, we discover spontaneous symmetry breaking and superlattice formation in DSA of BCP. We observe the emergence of low symmetry phas...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611865/ https://www.ncbi.nlm.nih.gov/pubmed/31278275 http://dx.doi.org/10.1038/s41467-019-10896-5 |
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author | Ding, Yi Gadelrab, Karim R. Mizrahi Rodriguez, Katherine Huang, Hejin Ross, Caroline A. Alexander-Katz, Alfredo |
author_facet | Ding, Yi Gadelrab, Karim R. Mizrahi Rodriguez, Katherine Huang, Hejin Ross, Caroline A. Alexander-Katz, Alfredo |
author_sort | Ding, Yi |
collection | PubMed |
description | The directed self-assembly (DSA) of block copolymers (BCPs) has shown promise in fabricating customized two-dimensional (2D) geometries at the nano- and meso-scale. Here, we discover spontaneous symmetry breaking and superlattice formation in DSA of BCP. We observe the emergence of low symmetry phases in high symmetry templates for BCPs that would otherwise not exhibit these phases in the bulk or thin films. The emergence phenomena are found to be a general behavior of BCP in various template layouts with square local geometry, such as 4(4) and 3(2)434 Archimedean tilings and octagonal quasicrystals. To elucidate the origin of this phenomenon and confirm the stability of the emergent phases, we implement self-consistent field theory (SCFT) simulations and a strong-stretching theory (SST)-based analytical model. Our work demonstrates an emergent behavior of soft matter and draws an intriguing connection between 2-dimensional soft matter self-assembly at the mesoscale and inorganic epitaxy at the atomic scale. |
format | Online Article Text |
id | pubmed-6611865 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-66118652019-07-08 Emergent symmetries in block copolymer epitaxy Ding, Yi Gadelrab, Karim R. Mizrahi Rodriguez, Katherine Huang, Hejin Ross, Caroline A. Alexander-Katz, Alfredo Nat Commun Article The directed self-assembly (DSA) of block copolymers (BCPs) has shown promise in fabricating customized two-dimensional (2D) geometries at the nano- and meso-scale. Here, we discover spontaneous symmetry breaking and superlattice formation in DSA of BCP. We observe the emergence of low symmetry phases in high symmetry templates for BCPs that would otherwise not exhibit these phases in the bulk or thin films. The emergence phenomena are found to be a general behavior of BCP in various template layouts with square local geometry, such as 4(4) and 3(2)434 Archimedean tilings and octagonal quasicrystals. To elucidate the origin of this phenomenon and confirm the stability of the emergent phases, we implement self-consistent field theory (SCFT) simulations and a strong-stretching theory (SST)-based analytical model. Our work demonstrates an emergent behavior of soft matter and draws an intriguing connection between 2-dimensional soft matter self-assembly at the mesoscale and inorganic epitaxy at the atomic scale. Nature Publishing Group UK 2019-07-05 /pmc/articles/PMC6611865/ /pubmed/31278275 http://dx.doi.org/10.1038/s41467-019-10896-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Ding, Yi Gadelrab, Karim R. Mizrahi Rodriguez, Katherine Huang, Hejin Ross, Caroline A. Alexander-Katz, Alfredo Emergent symmetries in block copolymer epitaxy |
title | Emergent symmetries in block copolymer epitaxy |
title_full | Emergent symmetries in block copolymer epitaxy |
title_fullStr | Emergent symmetries in block copolymer epitaxy |
title_full_unstemmed | Emergent symmetries in block copolymer epitaxy |
title_short | Emergent symmetries in block copolymer epitaxy |
title_sort | emergent symmetries in block copolymer epitaxy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611865/ https://www.ncbi.nlm.nih.gov/pubmed/31278275 http://dx.doi.org/10.1038/s41467-019-10896-5 |
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