Soft-Shear-Aligned Vertically Oriented Lamellar Block Copolymers for Template-Free Sub-10 nm Patterning and Hybrid Nanostructures

Maninderjeet Singh; Aman Agrawal; Wenjie Wu; Ali Masud; Edward Armijo; Damian Gonzalez; Shenghui Zhou; Tanguy Terlier; Chenhui Zhu; Joseph Strzalka; Krzysztof Matyjaszewski; Michael Bockstaller; Jack F. Douglas; Alamgir Karim

doi:10.1021/acsami.1c23865

journal article·2022-03-16Open access

Soft-Shear-Aligned Vertically Oriented Lamellar Block Copolymers for Template-Free Sub-10 nm Patterning and Hybrid Nanostructures

Maninderjeet Singh, Aman Agrawal, Wenjie Wu, Ali Masud, Edward Armijo, Damian Gonzalez, Shenghui Zhou, Tanguy Terlier, Chenhui Zhu, Joseph Strzalka, Krzysztof Matyjaszewski, Michael Bockstaller, Jack F. Douglas, Alamgir Karim

ACS Applied Materials & Interfaces· Volume 14· Issue 10

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Source abstract

Abstract

The template-free unidirectional alignment of lamellar block copolymers (l-BCPs) for sub-10 nm high-resolution patterning and hybrid multicomponent nanostructures is important for technological applications. We demonstrate a modified soft-shear-directed self-assembly (SDSA) approach for aligning pristine l-BCPs and l-BCPs with incorporated polymer-grafted nanoparticles (PGNPs), as well as the l-BCP conversion to aligned gold nanowires, and hybrid of metallic gold nanowire and dielectric silica nanoparticle in the form of line-dot nanostructures. The smallest patterns have a half-pitch as small as 9.8 nm. In all cases, soft-shear is achieved using a high-molecular-mass polymer topcoat layer, with support on a neutral bottom layer. We also show that the hybrid line-dot nanostructures have a red-shifted plasmonic response in comparison to neat gold nanowires. These template-free aligned BCPs and nanowires have potential use in nanopatterning applications, and the line-dot nanostructures should be useful in the sensing of biomolecules and other molecular species based on the plasmonic response of the nanowires.

Source: openalex_inverted_index · Quality: baseline

Research context

Polymers Nanomaterials

OpenAlex topics: Block Copolymer Self-Assembly · Polymer Surface Interaction Studies · Advanced Polymer Synthesis and Characterization

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

Affiliations

Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States

Materials Science Program, University of Houston, Houston, Texas 77204, United States

SIMS Laboratory, Shared Equipment Authority, Rice University, Houston, Texas 77005, United States

Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, United States

X-Ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States

Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States

Material Science and Engineering Division, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, United States

Funding

Basic Energy Sciences · Division of Materials Research

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