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Priming self-assembly pathways by stacking block copolymers

Author

Listed:
  • Sebastian T. Russell

    (Brookhaven National Laboratory)

  • Suwon Bae

    (Brookhaven National Laboratory)

  • Ashwanth Subramanian

    (Stony Brook University)

  • Nikhil Tiwale

    (Brookhaven National Laboratory)

  • Gregory Doerk

    (Brookhaven National Laboratory)

  • Chang-Yong Nam

    (Brookhaven National Laboratory
    Stony Brook University)

  • Masafumi Fukuto

    (Brookhaven National Laboratory)

  • Kevin G. Yager

    (Brookhaven National Laboratory)

Abstract

Block copolymers spontaneously self-assemble into well-defined nanoscale morphologies. Yet equilibrium assembly gives rise to a limited set of structures. Non-equilibrium strategies can, in principle, expand diversity by exploiting self-assembly’s responsive nature. In this vein, we developed a pathway priming strategy combining control of thin film initial configurations and ordering history. We sequentially coat distinct materials to form prescribed initial states, and use thermal annealing to evolve these manifestly non-equilibrium states through the assembly landscape, traversing normally inaccessible transient structures. We explore the enormous associated hyperspace, spanning processing (annealing temperature and time), material (composition and molecular weight), and layering (thickness and order) dimensions. We demonstrate a library of exotic non-native morphologies, including vertically-oriented perforated lamellae, aqueduct structures (vertical lamellar walls with substrate-pinned perforations), parapets (crenellated lamellae), and networks of crisscrossing lamellae. This enhanced structural control can be used to modify functional properties, including accessing regimes that surpass their equilibrium analogs.

Suggested Citation

  • Sebastian T. Russell & Suwon Bae & Ashwanth Subramanian & Nikhil Tiwale & Gregory Doerk & Chang-Yong Nam & Masafumi Fukuto & Kevin G. Yager, 2022. "Priming self-assembly pathways by stacking block copolymers," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34729-0
    DOI: 10.1038/s41467-022-34729-0
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    References listed on IDEAS

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    1. Jae Won Jeong & Se Ryeun Yang & Yoon Hyung Hur & Seong Wan Kim & Kwang Min Baek & Soonmin Yim & Hyun-Ik Jang & Jae Hong Park & Seung Yong Lee & Chong-Ook Park & Yeon Sik Jung, 2014. "High-resolution nanotransfer printing applicable to diverse surfaces via interface-targeted adhesion switching," Nature Communications, Nature, vol. 5(1), pages 1-12, December.
    2. E. Huang & L. Rockford & T. P. Russell & C. J. Hawker, 1998. "Nanodomain control in copolymer thin films," Nature, Nature, vol. 395(6704), pages 757-758, October.
    3. Amir Tavakkoli K. G. & Samuel M. Nicaise & Karim R. Gadelrab & Alfredo Alexander-Katz & Caroline A. Ross & Karl K. Berggren, 2016. "Multilayer block copolymer meshes by orthogonal self-assembly," Nature Communications, Nature, vol. 7(1), pages 1-10, April.
    4. Pawel W. Majewski & Atikur Rahman & Charles T. Black & Kevin G. Yager, 2015. "Arbitrary lattice symmetries via block copolymer nanomeshes," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    5. Atikur Rahman & Pawel W. Majewski & Gregory Doerk & Charles T. Black & Kevin G. Yager, 2016. "Non-native three-dimensional block copolymer morphologies," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    6. A. Stein & G. Wright & K. G. Yager & G. S. Doerk & C. T. Black, 2016. "Selective directed self-assembly of coexisting morphologies using block copolymer blends," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    7. Yi Ding & Karim R. Gadelrab & Katherine Mizrahi Rodriguez & Hejin Huang & Caroline A. Ross & Alfredo Alexander-Katz, 2019. "Emergent symmetries in block copolymer epitaxy," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
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