Hierarchical multi-level block copolymer patterns by multiple self-assembly

Jung, Hyunsung; Shin, Weon Ho; Park, Tae Wan; Choi, Young Joong; Yoon, Young Joon; Park, Sung Heum; Lim, Jae‐Hong; Kwon, Jung‐Dae; Lee, Jung Woo; Kwon, Se‐Hun; Seong, Gi Hun; Kim, Kwang Ho; Park, Woon Ik

doi:10.1039/c9nr00774a

Cited by 22 publications

(16 citation statements)

References 37 publications

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“…It is noteworthy that the addition of PS homopolymer chains was crucial to limit the dot overlap between layers, which is a primary concern for enabling density multiplication methodologies. Recently Jung et al proposed a more direct approach to form dense dot layers from sphere‐forming BCP thin films . A double layer of PDMS spherical domains was formed by spin‐coating a concentrated sphere‐forming PS‐ b ‐PDMS solution in toluene.…”

Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Demazy

Cummins

Aissou

et al. 2019

Adv Materials Inter

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Nanostructured block copolymer (BCP) thin films constitute an elegant tool to generate complex periodic patterns with periodicities ranging from a few nanometers to hundreds of nanometers. Such well‐organized nanostructures are foreseen to enable next‐generation nanofabrication research with potent applications in the design of functional materials in biology, optics or microelectronics. This valuable platform is, however, limited by the geometric features attainable from diblock copolymer architectures considering the thermodynamic driving force leaning toward the formation of structures minimizing the interface between the blocks. Therefore, strategies to enrich the variety of structures obtained by BCP self‐assembly processes are gaining momentum and this progress report reviews the opportunities inherent to iterative BCP self‐assembly by considering the emerging strategies for the generation of “non‐native” morphologies.

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Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Demazy

Cummins

Aissou

et al. 2019

Adv Materials Inter

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“…Block copolymer lithography (BCPL) is a patterning method that allows BCPs to selfassemble spontaneously or via directed self-assembly into various polymeric structures of molecular dimensions [195][196][197][198] followed by the selective removal of one of the blocks, for instance via etching, in order to obtain 3D surface relief patterns [19,[199][200][201][202][203][204] (note that the resulting polymeric patterns can further serve as templates for additional surface modification to obtain 3D surface relief patterns of various other non-polymeric materials; see the next section [205,206]). Here, we refer to self-assembly as to a natural nanostructure formation process based on the interplay between van der Waals forces, hydrogen bonding, and hydrophobic interactions that induces a spontaneous ordering of polymer building blocks [207][208][209].…”

Section: Block Copolymer Lithography Based On (Directed) Self-assemblymentioning

confidence: 99%

“…Instead, directed self-assembly [211] uses various external stimuli (e.g., thermal annealing [197,199,209,[212][213][214], solvent annealing [199,200,209,215], thermal and solvent annealing [199], ultrasounds [216], microwaves [217], magnetic fields [218], photoirradiation [219], shearing [220], addition of an ionic liquid [221], controlled spreading area [222], or epitaxy [210,223]) in order to induce and favor the self-assembly process. This process is also favored when employing click chemistry [214], and it displays a series of advantages: high-quality hierarchical [195,224] nanostructures exhibiting a low number of defects can be rapidly generated [195,213] over a large area [222].…”

Section: Block Copolymer Lithography Based On (Directed) Self-assemblymentioning

confidence: 99%

Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

Handrea-Dragan

Botiz

2021

Polymers

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There is an astonishing number of optoelectronic, photonic, biological, sensing, or storage media devices, just to name a few, that rely on a variety of extraordinary periodic surface relief miniaturized patterns fabricated on polymer-covered rigid or flexible substrates. Even more extraordinary is that these surface relief patterns can be further filled, in a more or less ordered fashion, with various functional nanomaterials and thus can lead to the realization of more complex structured architectures. These architectures can serve as multifunctional platforms for the design and the development of a multitude of novel, better performing nanotechnological applications. In this work, we aim to provide an extensive overview on how multifunctional structured platforms can be fabricated by outlining not only the main polymer patterning methodologies but also by emphasizing various deposition methods that can guide different structures of functional nanomaterials into periodic surface relief patterns. Our aim is to provide the readers with a toolbox of the most suitable patterning and deposition methodologies that could be easily identified and further combined when the fabrication of novel structured platforms exhibiting interesting properties is targeted.

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“…For the past several decades, in order to generate well-defined active nanostructures, various lithography methods have been extensively developed, such as photolithography [26,27], nanoimprint lithography (NIL) [28,29], extreme ultraviolet (EUV) lithography [30,31], directed self-assembly (DSA) of block copolymer (BCP) [32][33][34][35], and nanotransfer printing (nTP) [36][37][38][39]. Among these useful lithography methods, nTP has received considerable attention due to its high resolutions, simple process, and good costeffectiveness.…”

Section: Introductionmentioning

confidence: 99%

Formation of Li2CO3 Nanostructures for Lithium-Ion Battery Anode Application by Nanotransfer Printing

Park

Lee

No³

et al. 2021

Materials

Self Cite

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Various high-performance anode and cathode materials, such as lithium carbonate, lithium titanate, cobalt oxides, silicon, graphite, germanium, and tin, have been widely investigated in an effort to enhance the energy density storage properties of lithium-ion batteries (LIBs). However, the structural manipulation of anode materials to improve the battery performance remains a challenging issue. In LIBs, optimization of the anode material is a key technology affecting not only the power density but also the lifetime of the device. Here, we introduce a novel method by which to obtain nanostructures for LIB anode application on various surfaces via nanotransfer printing (nTP) process. We used a spark plasma sintering (SPS) process to fabricate a sputter target made of Li2CO3, which is used as an anode material for LIBs. Using the nTP process, various Li2CO3 nanoscale patterns, such as line, wave, and dot patterns on a SiO2/Si substrate, were successfully obtained. Furthermore, we show highly ordered Li2CO3 nanostructures on a variety of substrates, such as Al, Al2O3, flexible PET, and 2-Hydroxylethyl Methacrylate (HEMA) contact lens substrates. It is expected that the approach demonstrated here can provide new pathway to generate many other designable structures of various LIB anode materials.

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Hierarchical multi-level block copolymer patterns by multiple self-assembly

Abstract: Unusual pattern generation of various 2D and 3D nanostructures can be achieved by the multiple self-assembly of block copolymers (BCPs) such as big-dot, double-dot, line-on-dot, pondering, dot-in-honeycomb, dot-in-pondering, and line-on-pondering patterns.

Cited by 22 publications

References 37 publications

Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Multifunctional Structured Platforms: From Patterning of Polymer-Based Films to Their Subsequent Filling with Various Nanomaterials

Formation of Li2CO3 Nanostructures for Lithium-Ion Battery Anode Application by Nanotransfer Printing

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