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Majewski PW, Rahman A, Black CT, et al. Arbitrary lattice symmetries via block copolymer nanomeshes. Nat Commun. 2015;6:7448doi: 10.1038/ncomms8448.
Majewski, P. W., Rahman, A., Black, C. T., & Yager, K. G. (2015). Arbitrary lattice symmetries via block copolymer nanomeshes. Nature communications, 67448. https://doi.org/10.1038/ncomms8448
Majewski, Pawel W, et al. "Arbitrary lattice symmetries via block copolymer nanomeshes." Nature communications vol. 6 (2015): 7448. doi: https://doi.org/10.1038/ncomms8448
Majewski PW, Rahman A, Black CT, Yager KG. Arbitrary lattice symmetries via block copolymer nanomeshes. Nat Commun. 2015 Jun 23;6:7448. doi: 10.1038/ncomms8448. PMID: 26100566; PMCID: PMC4557284.
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Nat Commun. 2015 Jun 23;6:7448. doi: 10.1038/ncomms8448.

Arbitrary lattice symmetries via block copolymer nanomeshes.

Nature communications

Pawel W Majewski, Atikur Rahman, Charles T Black, Kevin G Yager

Affiliations

  1. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA.

PMID: 26100566 PMCID: PMC4557284 DOI: 10.1038/ncomms8448

Abstract

Self-assembly of block copolymers is a powerful motif for spontaneously forming well-defined nanostructures over macroscopic areas. Yet, the inherent energy minimization criteria of self-assembly give rise to a limited library of structures; diblock copolymers naturally form spheres on a cubic lattice, hexagonally packed cylinders and alternating lamellae. Here, we demonstrate multicomponent nanomeshes with any desired lattice symmetry. We exploit photothermal annealing to rapidly order and align block copolymer phases over macroscopic areas, combined with conversion of the self-assembled organic phase into inorganic replicas. Repeated photothermal processing independently aligns successive layers, providing full control of the size, symmetry and composition of the nanoscale unit cell. We construct a variety of symmetries, most of which are not natively formed by block copolymers, including squares, rhombuses, rectangles and triangles. In fact, we demonstrate all possible two-dimensional Bravais lattices. Finally, we elucidate the influence of nanostructure on the electrical and optical properties of nanomeshes.

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