Origin of order in bionanostructures

Sergeev, Anton; Timchenko, A. A.; Kryuchkov, Mikhail; Blagodatski, Artem; Enin, Gennadiy A.; Katanaev, Vladimir L.

doi:10.1039/c5ra10103d

Cited by 12 publications

(12 citation statements)

References 27 publications

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“…refs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10). One specific case of surface structure has drawn particular attention: the nano-nipple arrays observed on many butterfly and moth eyes.…”

mentioning

confidence: 99%

“…refs 5,6,8 and 9). It can be expected that much more insight will come from further analysis of the corneal nipple arrays in much greater detail than has been done in the past.…”

mentioning

confidence: 99%

“…The corneal surface structures of many insect eyes have been studied for several decades (e.g. refs 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ). One specific case of surface structure has drawn particular attention: the nano-nipple arrays observed on many butterfly and moth eyes.…”

mentioning

confidence: 99%

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Mesostructure of Ordered Corneal Nano-nipple Arrays: The Role of 5–7 Coordination Defects

Lee

Erb

2016

Sci Rep

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Corneal nano-nipple structures consisting of hexagonally arranged protrusions with diameters around 200 nm have long been known for their antireflection capability and have served as biological blueprint for solar cell, optical lens and other surface designs. However, little is known about the global arrangement of these nipples on the ommatidial surface and their growth during the eye development. This study provides new insights based on the analysis of nano-nipple arrangements on the mesoscale across entire ommatidia, which has never been done before. The most important feature in the nipple structures are topological 5- and 7-fold coordination defects, which align to form dislocations and interconnected networks of grain boundaries that divide the ommatidia into crystalline domains in different orientations. Furthermore, the domain size distribution might be log-normal, and the domains demonstrate no preference in crystal orientation. Both observations suggest that the nipple growth process may be similar to the nucleation and growth mechanisms during the formation of other crystal structures. Our results are also consistent with the most recently proposed Turing-type reaction-diffusion process. In fact, we were able to produce the key structural characteristics of the nipple arrangements using Turing analysis from the nucleation to the final structure development.

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“…refs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10). One specific case of surface structure has drawn particular attention: the nano-nipple arrays observed on many butterfly and moth eyes.…”

mentioning

confidence: 99%

“…refs 5,6,8 and 9). It can be expected that much more insight will come from further analysis of the corneal nipple arrays in much greater detail than has been done in the past.…”

mentioning

confidence: 99%

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Mesostructure of Ordered Corneal Nano-nipple Arrays: The Role of 5–7 Coordination Defects

Lee

Erb

2016

Sci Rep

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“…The surfaces of many insects are decorated with nanostructure topographies that control and determine specific physical and chemical properties. The wings and eyes of many insects—including cicadas and moths—have arrays of multimodal nanoscale cones and cylinders that are anti-reflective, anti-wetting, self-cleaning, and anti-microbial [ 1 , 2 , 3 , 4 , 5 ]. Insect cuticles are complex natural composite materials that are composed of a polysaccharide chitin fiber network and a matrix of proteins and lipids, and can potentially form through complex interactions during cuticle deposition [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Nanosphere Lithography of Chitin and Chitosan with Colloidal and Self-Masking Patterning

2018

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Complex surface topographies control, define, and determine the properties of insect cuticles. In some cases, these nanostructured materials are a direct extension of chitin-based cuticles. The cellular mechanisms that generate these elaborate chitin-based structures are unknown, and involve complicated cellular and biochemical “bottom-up” processes. We demonstrated that a synthetic “top-down” fabrication technique—nanosphere lithography—generates surfaces of chitin or chitosan that mimic the arrangement of nanostructures found on the surface of certain insect wings and eyes. Chitin and chitosan are flexible and biocompatible abundant natural polymers, and are a sustainable resource. The fabrication of nanostructured chitin and chitosan materials enables the development of new biopolymer materials. Finally, we demonstrated that another property of chitin and chitosan—the ability to self-assemble nanosilver particles—enables a novel and powerful new tool for the nanosphere lithographic method: the ability to generate a self-masking thin film. The scalability of the nanosphere lithographic technique is a major limitation; however, the silver nanoparticle self-masking enables a one-step thin-film cast or masking process, which can be used to generate nanostructured surfaces over a wide range of surfaces and areas.

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“…Model insect organisms, permitting genetic manipulations and/or providing complete information on their genome sequences, have been instrumental in advancing the research on insect molecular, developmental, and cell biology [ 15 ]. Following our research on the corneal nanocoatings in Drosophila melanogaster [ 16 , 17 ], we are now turning to another famous model insect—the silkmoth Bombyx mori .…”

Section: Introductionmentioning

confidence: 99%

Alternative moth-eye nanostructures: antireflective properties and composition of dimpled corneal nanocoatings in silk-moth ancestors

et al. 2017

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Moth-eye nanostructures are a well-known example of biological antireflective surfaces formed by pseudoregular arrays of nipples and are often used as a template for biomimetic materials. Here, we provide morphological characterization of corneal nanostructures of moths from the Bombycidae family, including strains of domesticated Bombyx mori silk-moth, its wild ancestor Bombyx mandarina, and a more distantly related Apatelodes torrefacta. We find high diversification of the nanostructures and strong antireflective properties they provide. Curiously, the nano-dimple pattern of B. mandarina is found to reduce reflectance as efficiently as the nanopillars of A. torrefacta. Access to genome sequence of Bombyx further permitted us to pinpoint corneal proteins, likely contributing to formation of the antireflective nanocoatings. These findings open the door to bioengineering of nanostructures with novel properties, as well as invite industry to expand traditional moth-eye nanocoatings with the alternative ones described here.Electronic supplementary materialThe online version of this article (doi:10.1186/s12951-017-0297-y) contains supplementary material, which is available to authorized users.

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Origin of order in bionanostructures

Cited by 12 publications

References 27 publications

Mesostructure of Ordered Corneal Nano-nipple Arrays: The Role of 5–7 Coordination Defects

Mesostructure of Ordered Corneal Nano-nipple Arrays: The Role of 5–7 Coordination Defects

Nanosphere Lithography of Chitin and Chitosan with Colloidal and Self-Masking Patterning

Alternative moth-eye nanostructures: antireflective properties and composition of dimpled corneal nanocoatings in silk-moth ancestors

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