Making photonic structures via cell culture: <i>Morpho</i> butterfly scales

Parker, Andrew R.; Townley, Helen E.

doi:10.1680/bbn.14.00026

Cited by 8 publications

(6 citation statements)

References 10 publications

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“…While the focused ion beam method is promising, it is currently costprohibitive and very time consuming (one week is needed for approximately 1 cm 2 ). Thus current replication techniques are highly sophisticated and techniques such as producing photonic structures via cell culture [36] or laser interference lithography [49] are overly complicated and expensive. For industrial use low-tech/high-yield solutions are of interest since they lower costs and simplify production.…”

Section: Introductionmentioning

confidence: 99%

Morpho peleides butterfly wing imprints as structural colour stamp

et al. 2016

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This study presents the replication of a color-causing nanostructure based on the upper laminae of numerous cover scales of Morpho peleides butterfly wings and obtained solely by imprinting their upper-wing surfaces. Our results indicate that a simple casting technique using a novel integrated release agent can obtain a large positive replica using negative imprints via Polyvinylsiloxane. The developed method is low-tech and high-yield and is thus substantially easier and less expensive than previous methods. The microstructures were investigated with light microscopy, the nanostructures with both scanning and transmission electron microscopy, and the reflections with UV visible spectrometry. The influence of the release agent and the quality of the master stamp were determined by comparing measurements of the cover-scale sizes and their chromaticity values obtained by their images and with their positive imprints. The master stamp provided multiple positive replicas up to 3 cm(2) in just 1 h with structural coloration effects visible to the naked eye. Thus, the developed method proves the accuracy of the replicated nanostructure and its potential industrial application as a color-producing nanostamp.

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Section: Introductionmentioning

confidence: 99%

Morpho peleides butterfly wing imprints as structural colour stamp

et al. 2016

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“…Many plants and animals have evolved wavelength-scale microstructures as means of producing colour 38 39 40 41 . Study of these architectures can inspire the development of industrial scale fabrication techniques for next-generation PhC-based technologies 42 43 44 .…”

Section: Resultsmentioning

confidence: 99%

“…It may be possible to produce amorphous gyroid networks via block co-polymer experiments or equivalent self-assembly methods. This poses an interesting experimental challenge, the solution of which will facilitate the fabrication of advanced optical metamaterials for industrial applications 43 60 .…”

Section: Discussionmentioning

confidence: 99%

Local self-uniformity in photonic networks

et al. 2017

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The interaction of a material with light is intimately related to its wavelength-scale structure. Simple connections between structure and optical response empower us with essential intuition to engineer complex optical functionalities. Here we develop local self-uniformity (LSU) as a measure of a random network's internal structural similarity, ranking networks on a continuous scale from crystalline, through glassy intermediate states, to chaotic configurations. We demonstrate that complete photonic bandgap structures possess substantial LSU and validate LSU's importance in gap formation through design of amorphous gyroid structures. Amorphous gyroid samples are fabricated via three-dimensional ceramic printing and the bandgaps experimentally verified. We explore also the wing-scale structuring in the butterfly Pseudolycaena marsyas and show that it possesses substantial amorphous gyroid character, demonstrating the subtle order achieved by evolutionary optimization and the possibility of an amorphous gyroid's self-assembly.

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“…8 Biological structures often exhibit functional characteristics, which rely on their specific architecture. However, generating the complexity of biological structure with artificial methods is limited.…”

Section: Ice | Sciencementioning

confidence: 99%

Editorial

Zollfrank¹

2015

Bioinspired, Biomimetic and Nanobiomaterials

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1Dr Mallick was an internationally renowned material scientist with a strong focus on biological and medicinal sciences. As a material scientist, he was always open to other scientific disciplines and innovative technology routes as such the bioinspired approach. He strongly developed the new field of bioinspired materials, especially for biomedical applications. Most recently, he headed the Tissue Engineering and Ceramic Processing research group (TiECeP), which includes a large number of undergraduate and graduate students, as well as doctoral candidates from the natural and engineering sciences. His research and teaching was focused on the synthesis, structure, processing and characterisation of materials including ceramics, glass and glass-ceramics, polymers, metals and biomedical materials. His other areas of significant research impact included functional, engineering and electroceramics for mobile and telecommunication applications as well as superconductors. He published nearly 100 refereed papers in leading peer-reviewed high-impact international journals, as well as a number of contributed/invited conference papers.The Dr Kajal Mallick memorial issue honours his life's work in his various fields of research. It includes part of his own work and contributions from his friends and partners in sciences. Major contributions come from the area of biomedical science, and novel scaffold fabrication and bone regenerative medicine. This issue further encompasses innovative ceramic manufacturing techniques and bioinspired materials such as optical structures and theoretical consideration on the toucan beak.The first paper by Winnet and Mallick 2 and accompanied work derives from the renowned Warwick Manufacturing Group and reflects the research of Dr Kajal Mallick. The topic of this paper is the fabrication of porous 3D bioscaffolds by adaptive foam reticulation. Highly interconnected and porous hydroxyapatite (HA) scaffolds with controllable macroporosity and microporosity were produced using the adaptive foam reticulation technique, combining foam reticulation and freeze-casting methodologies. The developed process yielded an optimised macropore structure from the polymeric template. Designed micropores are introduced into the struts using the porogen approach. The cell culture and assay test distinctly showed that the scaffolds are not cytotoxic and can be used as bone grafts.The next paper by Gu et al.3 deals with the evaluation of the dynamic nanomechanical behaviour of healthy compared with disordered (osteogenesis imperfecta (OI)) human cortical bone. The assessment of the viscoelastic properties of bone is of profound interest, because the time-dependent mechanical properties relate to the fracture risk of bone under dynamic loading. The authors studied the nanomechanical behaviour of the intact, demineralised and OI human cortical bone specimens by dynamic nanoindentation. Their results suggest that the viscoelasticity of bone is primarily attributable to the mineral component. This study is a valuable ...

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Making photonic structures via cell culture: Morpho butterfly scales

Cited by 8 publications

References 10 publications

Morpho peleides butterfly wing imprints as structural colour stamp

Morpho peleides butterfly wing imprints as structural colour stamp

Local self-uniformity in photonic networks

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