Symmetry-breaking in double gyroid block copolymer films by non-affine distortion

Jo, Seungyun; Park, Haedong; Jun, Taesuk; Kim, Kwangjin; Jung, Hyunsoo; Park, Sungmin; Lee, Byeongdu; Lee, Seungwoo; Ryu, Du Yeol

doi:10.1016/j.apmt.2021.101006

Title: Symmetry-breaking in double gyroid block copolymer films by non-affine distortion

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Abstract

Soft-matter bicontinuous networks find a double gyroid structure from block copolymer (BCP) self-assembly. A gyroid structure composed of dissimilar blocks has proven its potential as a soft crystal capable of tuning structural periodicity and symmetry, of which the lattice dimension is variable with molecular weight of the polymer. Using an asymmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA), in this study we show that the self-assembled gyroid films formed via a solvent vapor annealing (SVA) process undergo unique structural distortion due to directional deformation immediately upon deswelling. During the SVA process with PS-b-PMMA films, transient cylinders developed from the as-cast morphology transform into a cubic gyroid structure in a swollen state. Rapid and spontaneous deswelling processes -the manners in which the films contract along the z-direction while retaining an enlarged lateral dimension of the cubic form -lead to triclinic gyroid structures with z-directional contraction ratios (C_z) of 2.5 and 2.0, respectively. Our X-ray analysis reveals that the deswelling process of the swollen gyroid films produces a notable symmetry-breaking in non-affine gyroid structure that elicits several forbidden reflections such as {110} and {200} reflections. For further characterization of the symmetry-breaking, we delineate the structural features of noncubic gyroid films by computing electron-density difference maps assistedmore »« less

Authors:

Jo, Seungyun ^[1]; Park, Haedong ^[2]; Jun, Taesuk ^[1]; Kim, Kwangjin ^[2]; Jung, Hyunsoo ^[1]; Park, Sungmin ^[3]; Lee, Byeongdu ^[4]; Lee, Seungwoo ^[2]; Ryu, Du Yeol ^[1]

Yonsei Univ., Seoul (Korea, Republic of)
Korea Univ., Seoul, (Korea, Republic of)
Korea Research Institute of Chemical Technology (KRICT), Daejeon (Korea, Republic of)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Publication Date:: Thu Mar 18 00:00:00 EDT 2021

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Samsung Electronics

OSTI Identifier:: 1839089

Alternate Identifier(s):: OSTI ID: 1817274

Grant/Contract Number:: AC02-06CH11357; SRFC-MA1801-04; AC0206CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Applied Materials Today

Additional Journal Information:: Journal Volume: 23; Journal ID: ISSN 2352-9407

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; gyroid; solvent vapor annealing; Z-directional contraction; symmetry-breaking; non-affine distortion; Weyl point

Citation Formats


                    Jo, Seungyun, Park, Haedong, Jun, Taesuk, Kim, Kwangjin, Jung, Hyunsoo, Park, Sungmin, Lee, Byeongdu, Lee, Seungwoo, and Ryu, Du Yeol. Symmetry-breaking in double gyroid block copolymer films by non-affine distortion.  United States: N. p., 2021. 
Web.  doi:10.1016/j.apmt.2021.101006.

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                    Jo, Seungyun, Park, Haedong, Jun, Taesuk, Kim, Kwangjin, Jung, Hyunsoo, Park, Sungmin, Lee, Byeongdu, Lee, Seungwoo, & Ryu, Du Yeol. Symmetry-breaking in double gyroid block copolymer films by non-affine distortion.  United States.  https://doi.org/10.1016/j.apmt.2021.101006

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                    Jo, Seungyun, Park, Haedong, Jun, Taesuk, Kim, Kwangjin, Jung, Hyunsoo, Park, Sungmin, Lee, Byeongdu, Lee, Seungwoo, and Ryu, Du Yeol. Thu .  
"Symmetry-breaking in double gyroid block copolymer films by non-affine distortion".  United States.  https://doi.org/10.1016/j.apmt.2021.101006.  https://www.osti.gov/servlets/purl/1839089.

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@article{osti_1839089,

  title        = {Symmetry-breaking in double gyroid block copolymer films by non-affine distortion},

  author       = {Jo, Seungyun and Park, Haedong and Jun, Taesuk and Kim, Kwangjin and Jung, Hyunsoo and Park, Sungmin and Lee, Byeongdu and Lee, Seungwoo and Ryu, Du Yeol},

  abstractNote = {Soft-matter bicontinuous networks find a double gyroid structure from block copolymer (BCP) self-assembly. A gyroid structure composed of dissimilar blocks has proven its potential as a soft crystal capable of tuning structural periodicity and symmetry, of which the lattice dimension is variable with molecular weight of the polymer. Using an asymmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA), in this study we show that the self-assembled gyroid films formed via a solvent vapor annealing (SVA) process undergo unique structural distortion due to directional deformation immediately upon deswelling. During the SVA process with PS-b-PMMA films, transient cylinders developed from the as-cast morphology transform into a cubic gyroid structure in a swollen state. Rapid and spontaneous deswelling processes -the manners in which the films contract along the z-direction while retaining an enlarged lateral dimension of the cubic form -lead to triclinic gyroid structures with z-directional contraction ratios (Cz) of 2.5 and 2.0, respectively. Our X-ray analysis reveals that the deswelling process of the swollen gyroid films produces a notable symmetry-breaking in non-affine gyroid structure that elicits several forbidden reflections such as {110} and {200} reflections. For further characterization of the symmetry-breaking, we delineate the structural features of noncubic gyroid films by computing electron-density difference maps assisted with X-ray measurements. Level-set approach is accordingly developed to quantitate the structural characteristics of the maps in terms of inversion symmetry-breaking, suggesting its possible application to optical Weyl photonic crystals.},

  doi          = {10.1016/j.apmt.2021.101006},

  journal      = {Applied Materials Today},

  number       = ,

  volume       = 23,

  place        = {United States},

  year         = {Thu Mar 18 00:00:00 EDT 2021},

  month        = {Thu Mar 18 00:00:00 EDT 2021}

}

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