Optically Tunable Gelled Photonic Crystal Covering Almost the Entire Visible Light Wavelength Region

Iwayama, Yumie; Yamanaka, Junpei; Takiguchi, Yoshihiro; Takasaka, Masaomi; Ito, Katsura; Shinohara, Tadaomi; Sawada, Tsutomu; Yonese, Masakatsu

doi:10.1021/la0207365

Cited by 162 publications

(103 citation statements)

References 24 publications

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“…Most polymer materials that exhibit structural color are based on the incorporation of periodically packed colloidal particles into the polymer matrix, or the formation of a porous polymer matrix by etching away the precursor colloidal particles [37][38][39][40][41][42][43][44][45]. These photonic crystalline materials are therefore isotropic in structure, they have poor color quality and weak mechanical response, and their color tuning ability covers narrow wavelength band (< 70 nm).…”

Section: Mechano-responsive Color Tunabilitymentioning

confidence: 99%

Multi-functions of hydrogel with bilayer-based lamellar structure

Haque

Gong

2013

Reactive and Functional Polymers

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A novel hybrid hydrogel has been developed by combining bilayer-based lamellar structure of a self-assembled polymer surfactant and polymer network of conventional hydrogel system. A wide range of lamellar structure from micro-domain up to macro-domain (cm-scale) has been successfully generated in the hydrogel. Flat, infinitely large, and perfectly aligned lamellar macro-domain was formed by applying mechanical shear to the gel forming precursor solution containing monomer, cross-linker, and initiator. The obtained hydrogel system contains macroscopic, single-domain, periodical stacking of integrated microscopic lamellar bilayers inside the polymer matrix of the hydrogel. Periodical stacking of the bilayers in the hydrogel selectively diffract visible light to exhibit magnificent structural color. Due to the uniaxial orientation of the bilayer, the hydrogel possesses superb functions that have never been realized before, such as the one-dimensional swelling, anisotropic Young's modulus, anisotropic molecular permeation, and diffusion. Furthermore, the hydrogel exhibits excellent color tuning ability over a wide spectrum range by mechanical stimuli.3

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Section: Mechano-responsive Color Tunabilitymentioning

confidence: 99%

Multi-functions of hydrogel with bilayer-based lamellar structure

Haque

Gong

2013

Reactive and Functional Polymers

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“…The photonic band of a gel-immobilized colloidal crystal is tunable due to an external force. 11,12 An excellent coincidence between the LSP resonance and the photonic band gap is expected due to tuning of the photonic band. We have tried to replace an opal with a gel-immobilized colloidal crystal.…”

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confidence: 99%

Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Kawakami

Mori

Nagashima

et al. 2015

Bulletin of the Chemical Society of Japan

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Aiming at fabrication of hybrid plasmonic-photonic crystals, gel-immobilized colloidal crystals made of a polystyrene colloidal suspension and an N -(Hydroxy methyl)acrylamidbased gel were immersed into an aqueous dispersion of gold nanoparticles. Atomic force microscope (AFM) observations have been performed for the gel-immobilized colloidal crystals with gold nanoparticles deposited on their surfaces. In the present study, the diameter of a colloidal sphere was c.a. 190 nm. The diameter of a gold nanoparticle was the same as in a preliminary study, c.a. 40 nm. Various immersion times up to two hours were tested. Surface of a sample of 2 hr immersion has been observed. Prior to the AFM observation, the sample was dried in a desiccator for 18 hrs. We have identified a facecentered cubic {111} structure of a colloidal crystal of nearly close packing. Nanoparticles isolated with one another have been observed on the surface of gel-immobilized crystal, which can be regarded as gold nanoparticles from their sizes.2

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“…As a result, the diffracted wavelength from the colloidal crystal is thermally tunable across the entire visible spectrum. The color of the hydrogel colloidal crystals is also sensitive to pH and ion concentration [78,79], and colloidal crystals embedded in hydrogels can serve as mechanical sensors for measuring strains due to uniaxial stretching or compression [80]. Xia et al reported electrically tunable structural color [81], tunable laser emission [82] and structural color printing [83] using hydrogel colloidal crystals.…”

Section: Crystalline Diffractionmentioning

confidence: 99%

Tunable structural color in organisms and photonic materials for design of bioinspired materials

Fudouzi

2011

Science and Technology of Advanced Materials

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In this paper, the key topics of tunable structural color in biology and material science are overviewed. Color in biology is considered for selected groups of tropical fish, octopus, squid and beetle. It is caused by nanoplates in iridophores and varies with their spacing, tilting angle and refractive index. These examples may provide valuable hints for the bioinspired design of photonic materials. 1D multilayer films and 3D colloidal crystals with tunable structural color are overviewed from the viewpoint of advanced materials. The tunability of structural color by swelling and strain is demonstrated on an example of opal composites.

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Optically Tunable Gelled Photonic Crystal Covering Almost the Entire Visible Light Wavelength Region

Cited by 162 publications

References 24 publications

Multi-functions of hydrogel with bilayer-based lamellar structure

Multi-functions of hydrogel with bilayer-based lamellar structure

Nanostructure for Hybrid Plasmonic–Photonic Crystal Formed on Gel-Immobilized Colloidal Crystal Observed by AFM after Drying

Tunable structural color in organisms and photonic materials for design of bioinspired materials

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