journal article·2023-12-20Open access

Directed Self-Assembly of Diamond Networks in Triblock Terpolymer Films on Patterned Substrates

Doha Abdelrahman, René Iseli, Michimasa Musya, Butsurin Jinnai, Shunsuke Fukami, Takeshi Yuasa, Hiroaki Sai, Ulrich B. Wiesner, Matthias Saba, Bodo D. Wilts, Ullrich Steiner, Justin Llandro, Ilja Gunkel

ACS Applied Materials & Interfaces· Volume 15· Issue 50

Abstract

Block copolymers (BCPs) are particularly effective in creating soft nanostructured templates for transferring complex 3D network structures into inorganic materials that are difficult to fabricate by other methods. However, achieving control of the local ordering within these 3D networks over large areas remains a significant obstacle to advancing material properties. Here, we address this challenge by directing the self-assembly of a 3D alternating diamond morphology by solvent vapor annealing of a triblock terpolymer film on a chemically patterned substrate. The hexagonal substrate patterns were designed to match a (111) plane of the diamond lattice. Commensurability between the sparse substrate pattern and the BCP lattice produced a uniformly ordered diamond network within the polymer film, as confirmed by a combination of atomic force microscopy and cross-sectional imaging using focused ion beam scanning electron microscopy. The successful replication of the complex and well-ordered 3D network structure in gold promises to advance optical metamaterials and has potential applications in nanophotonics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Block Copolymer Self-Assembly · Polymer Surface Interaction Studies · Pickering emulsions and particle stabilization

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland

Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan

Inamori Research Institute for Science, Kyoto 600-8411, Japan

Department of Materials Science and Engineering, Cornell University, 214 Bard Hall, Ithaca, New York 14853-1501, United States

Swiss National Center of Competence in Research (NCCR) Bio-Inspired Materials, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland

Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Str. 2a, Salzburg 5020, Austria

Funding

Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Adolphe Merkle Foundation

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