Self-assembled folding of a biaxially compressed film on a compliant substrate

Ahmed, Sk. Faruque; Nagashima, So; Lee, Jiyeong; Lee, Kwang-Ryeol; Kim, Kyung-Suk; Moon, Myoung‐Woon

doi:10.1016/j.carbon.2014.04.056

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…The films remain on the substrate through adhesion at the valley floor regions, and the local delamination produces cavities with triangular cross-sections between the substrate and film. This delamination buckling in multilayer GO has also been observed in pristine few-layer or multi-layer graphene films [16, 18], while amorphous carbon films fabricated by ion beam deposition from hydrocarbons do not show such local delamination when they undergo spontaneous buckling associated with growth-induced film compression [19]. The difference may reflect very different film-substrate bonding in the graphene-based films and the ion-beam deposited films.…”

Section: Resultsmentioning

confidence: 72%

“…An exciting new approach to the creation of these textured surface films is the growth or deposition of two-dimensional, sheet-like nanomaterials, such as graphene, whose atomically thin nature enables the creation of the ultrathin flexible films suitable for controlled wrinkling. Topographically patterned graphene has found numerous applications in optical and electronic devices, energy storage, and functional coatings [10–19]. …”

Section: Introductionmentioning

confidence: 99%

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Wrinkled, wavelength-tunable graphene-based surface topographies for directing cell alignment and morphology

Wang

Tonderys

Leggett

et al. 2016

Carbon

108

123

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Textured surfaces with periodic topographical features and long-range order are highly attractive for directing cell-material interactions. They mimic physiological environments more accurately than planar surfaces and can fundamentally alter cell alignment, shape, gene expression, and cellular assembly into superstructures or microtissues. Here we demonstrate for the first time that wrinkled graphene-based surfaces are suitable as textured cell attachment substrates, and that engineered wrinkling can dramatically alter cell alignment and morphology. The wrinkled surfaces are fabricated by graphene oxide wet deposition onto pre-stretched elastomers followed by relaxation and mild thermal treatment to stabilize the films in cell culture medium. Multilayer graphene oxide films form periodic, delaminated buckle textures whose wavelengths and amplitudes can be systematically tuned by variation in the wet deposition process. Human and murine fibroblasts attach to these textured films and remain viable, while developing pronounced alignment and elongation relative to those on planar graphene controls. Compared to lithographic patterning of nanogratings, this method has advantages in the simplicity and scalability of fabrication, as well as the opportunity to couple the use of topographic cues with the unique conductive, adsorptive, or barrier properties of graphene materials for functional biomedical devices.

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Section: Resultsmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Wrinkled, wavelength-tunable graphene-based surface topographies for directing cell alignment and morphology

Wang

Tonderys

Leggett

et al. 2016

Carbon

108

123

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“…The stiff skin [51] formed in the initial period of ion beam processing on PDMS surface is simultaneously compressed under ion bombardments to give rise to highly nonlinear winkle patterns. Aiming to induce the wrinkle and control the strain and morphological evolution during ion beam deposition, acetylene (C 2 H 2 ) IB has been deposited on PDMS in 30 s–30 min to form a stiff thin film of amorphous carbon [52]. The wrinkle formation is explained by the induced strain, and the mismatching strain in amorphous carbon film.…”

Section: Surface Nanostructuring By Plasmamentioning

confidence: 99%

Plasma-Based Nanostructuring of Polymers: A Review

2017

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There are various fabrication methods for synthesizing nanostructures, among which plasma-based technology is strongly competitive in terms of its flexibility and friendly uses, economy, and safety. This review systematically discusses plasma techniques and the detailed interactions of charged particles, radicals, and electrons with substrate materials of, in particular, polymers for their nanostructuring. Applications employing a plasma-based nanostructuring process are explored to show the advantages and benefits that plasma treatment brings to many topical and traditional issues, and are specifically related to wettability, healthcare, or energy researches. A short perspective is also presented on strategic plans for overcoming the limitations in dimension from surface to bulk, lifetime of surface functions, and selectivity for interactions.

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