Morpho -blue reproduced by nanocasting lithography

Saitô, Akira; Nakajima, Masaki; Miyamura, Yusuke; Sogo, Kenji; Ishikawa, Yoko; Hirai, Yoshihiko

doi:10.1117/12.679979

Cited by 18 publications

(9 citation statements)

References 16 publications

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“…The replicated mass-productive Morpho-blue (Fig. 4, lower right) was found to have basically the same nano-structures as the prototype, which was verified by precise surface observations using AFM and SEM 19 . The optical properties of the low cost Morpho-blue was found to be same as that of the prototype artificial Morpho-blue, which was estimated by the optical measurement shown in Fig.…”

Section: Mass-production For Applicationsmentioning

confidence: 62%

Reproduction, mass production, and control of the Morpho butterfly's blue

et al. 2009

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Strucural color of some blue Morpho butterflies has a physically mysterious feature, because it has both high reflectivity (>60%) and a single color in too wide angular range (> ± 40° from the normal), which are contradicting with each other from viewpoint of the interference phenomena. We have recently proven the principle of the mystery by extracting the physical essence, and emulating the nano-structures using nano-fabrication techniques. The key was exquisite combination of regular and random structures at nanometer scale. Such artificial structural color was found to concern wide applications, because the Morpho-color can produce a single color without pigment in wide angular range with high reflectivity. Also it makes colors impossible by pigment, and is resistant to fading due to chemical change over longtime. However, we must overcome several "death valleys" for wide industrial applications. A serious problem was low throughput in the fabrication process of nano-patterning by the conventional lithography, which was solved by use of nano-imprinting technique. Next research step is attempts at a precise control of the optical properties, in both terms of real space and wavelength, i.e. angular distribution and spectrum. We could successfully optimize the optical properties by controlling the parameters of nano-structures in the artificial film. In this process, optical simulations and micro-structural observations were taken in account. The optimization was achieved both theoretically and empirically by comparing a series of films fabricated with different nano-patterns. Also the relationship between the structural parameters and the optical properties was analyzed. The reflective characteristics of the optimized film were found to reproduce the optical properties closer to the natural Morpho-blue than the prototypes.

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Section: Mass-production For Applicationsmentioning

confidence: 62%

Reproduction, mass production, and control of the Morpho butterfly's blue

et al. 2009

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“…It is important from the industrial viewpoint that a significant film size was combined with control of the nanoscale structure. Furthermore, a corresponding mass-production method was developed using nanoimprinting (figure 6) [31,32].…”

Section: Recent Progress For Industrial Applicationsmentioning

confidence: 99%

Material design and structural color inspired by biomimetic approach

Saitô

2011

Science and Technology of Advanced Materials

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Generation of structural color is one of the essential functions realized by living organisms, and its industrial reproduction can result in numerous applications. From this viewpoint, the mechanisms, materials, analytical methods and fabrication technologies of the structural color are reviewed in this paper. In particular, the basic principles of natural photonic materials, the ideas developed from these principles, the directions of applications and practical industrial realizations are presented by summarizing the recent research results.

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“…This master substrate acted as a template to directly nanopattern UV curable resin using the NCL (Figure 5a-d). [32] To form the multilayer structures within the ridges, the same deposition technique was used ( Figure 5e). This method was advantageous as costs are significantly reduced since it only required a conventional mask aligner and a spin coater.…”

Section: Lithographic Replication Of Morpho Butterfly Scalesmentioning

confidence: 99%

“…permission. [48] Copyright 2009 Society of Photo Optical Instrumentation Engineers. (b) SEM image of the ripple (nano-groove) pattern made by fs-laser fabrication (after electroforming on Ni plate).…”

Section: Future Directionsmentioning

confidence: 99%

Morpho Butterfly‐Inspired Nanostructures

Butt

Yetisen

Mistry

et al. 2016

Advanced Optical Materials

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The wing scales of Morpho butterflies contain 3D nanostructures that produce blue iridescent colors. Incident light is diffracted from multilayered nanostructures to create interference effects and diffract narrow‐band light. The intensity of the diffracted light remains high over a wide range of viewing angles. Structural coloration originating from the scales of Morpho wing nanostructures has been studied to analyze its optical properties and to produce scalable replicas. This review discusses computational and experimental methods to replicate these nanoarchitectures. Analytical and numerical methods utilized include multilayer models, the finite element method, and rigorous coupled‐wave analysis, which enable the optimization of nanofabrication techniques involving biotemplating, chemical vapour deposition, electron beam lithography, and laser patterning to mimic the wing scale nanostructure. Dynamic tunability of the morphology, refractive index, and chemical composition of the Morpho wing scales allows the realization of a numerous applications.

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Morpho -blue reproduced by nanocasting lithography

Cited by 18 publications

References 16 publications

Reproduction, mass production, and control of the Morpho butterfly's blue

Reproduction, mass production, and control of the Morpho butterfly's blue

Material design and structural color inspired by biomimetic approach

Morpho Butterfly‐Inspired Nanostructures

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