Light-induced dynamic structural color by intracellular 3D photonic crystals in brown algae

López‐García, Martín; Masters, Nathan; O’Brien, Heath; Lennon, Joseph; Atkinson, George; Cryan, Martin J; Oulton, Ruth; Whitney, Heather M.

doi:10.1126/sciadv.aan8917

Cited by 89 publications

(61 citation statements)

References 34 publications

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“…It can conveniently transfer the complex patterns from soft copies into hard copies by light irradiation 38,39. However, to achieve the artificial light‐induced tunable structural color like the brown algae in nature is not easy 40. On one hand, one pattern with multiple structural colors is hard to realize because it is difficult to apply different stimuli to adjacent microregions.…”

Section: Methodsmentioning

confidence: 99%

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

et al. 2020

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Structural color materials with reversible stimuli‐responsiveness to external environment have been widely used in sensors, encryption, display, and other fields. Compared with other stimuli, visible light is highly controllable both temporally and spatially with less damage to materials, which is more suitable for structural color patterning. Herein, a new diselenide‐containing shape memory material is prepared and used for creating patterns via visible light stimulus. In this system, the structural color originates from birefringence of stretched materials, whose shapes can be fixed while maintaining the mechanical stress. The fixed stress can be released by diselenide metathesis under visible light irradiation. By regulating the wavelength or irradiation time with a commercial projector, the pattern with tunable structural colors is realized and the structural color pattern can be erased and rewritten arbitrarily. During the patterning process, the optical signal is first stored as mechanical signal and then transformed back to optical signal. It is a new method for preparing visible‐light‐responsive structural color material and has great potential in display devices, anticounterfeiting labels, and data storage.

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Section: Methodsmentioning

confidence: 99%

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

et al. 2020

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“…Much comes from inherently coloured molecules that absorb light (i.e., chlorophyll) or compounds that luminesce (i.e., luciferin). However, a myriad of deep structural colours (iridescence) in the marine environment come from the nanostructuration of the material and has evolved independently across many phyla [228], including crustaceans [229][230][231], fish [232][233][234][235], bivalves [236,237], cephalopods [238], algae [239][240][241][242], diatoms [243], bacteria [244], etc. In the animal world, this type of colouration has been linked to camouflage, predation, signal communication and sex choice [245].…”

Section: Structural Colouration In the Marine Environmentmentioning

confidence: 99%

Marine-Derived Polymeric Materials and Biomimetics: An Overview

et al. 2020

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The review covers recent literature on the ocean as both a source of biotechnological tools and as a source of bio-inspired materials. The emphasis is on marine biomacromolecules namely hyaluronic acid, chitin and chitosan, peptides, collagen, enzymes, polysaccharides from algae, and secondary metabolites like mycosporines. Their specific biological, physicochemical and structural properties together with relevant applications in biocomposite materials have been included. Additionally, it refers to the marine organisms as source of inspiration for the design and development of sustainable and functional (bio)materials. Marine biological functions that mimic reef fish mucus, marine adhesives and structural colouration are explained.

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“…It has been suggested that some plants and macro‐algae use photonic structures to support their light harvesting and photosynthesis. [ 6,7 ] Earlier studies also discussed the possible role of the frustule related to its light modulating properties for photosynthesis, mainly by facilitated passage for photosynthetically more productive, or attenuation of potentially harmful radiation. [ 18,32 ] As both sPhC properties (pseudogap and guided modes) resonate in the range where light absorption for photosynthesis in diatoms is low, [ 33 ] we speculate that the C. granii girdle sPhC is not tuned for manipulation of photosynthetically more productive wavelengths.…”

Section: Discussionmentioning

confidence: 99%

“…Samples were characterized on an advanced Fourier image spectroscopy in a microscope setup adapted for the study of natural photonic systems. [ 7 ] Initially, glass cover slips were prepared with poly‐L‐lysine solution (P4707, Sigma Aldrich, St. Louis, USA). By this, frustule pieces were fixed onto the glass and did not move during immersion measurements with water.…”

Section: Methodsmentioning

confidence: 99%

“…[ 5 ] While PhCs in the animal kingdom have been mostly attributed to functions related to color production, [ 4 ] some recent discoveries demonstrated the presence of PhCs with light harvesting functions in photosynthetic organisms. These findings include vascular plants [ 6 ] and macroalgae [ 7 ] suggesting a widespread natural functionality to manipulate light for light harvesting through nanostructuring.…”

Section: Introductionmentioning

confidence: 99%

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Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms

2020

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Slab photonic crystals (PhCs) are photonic structures used in many modern optical technologies. Fabrication of these components is costly and usually involves eco‐unfriendly methods, requiring modern nanofabrication techniques and cleanroom facilities. This work describes that diatom microalgae evolved elaborate and highly reproducible slab PhCs in the girdle, a part of their silicon dioxide exoskeletons. Under natural conditions in water, the girdle of the centric diatom Coscinodiscus granii shows a well‐defined optical pseudogap for modes in the near‐infrared (NIR). This pseudogap shows dispersion toward the visible spectral range when light is incident at larger angles, eventually facilitating in‐plane propagation for modes in the green spectral range. The optical features can be modulated with refractive index contrast. The unit cell period, a critical factor controlling the pseudogap, is highly preserved within individuals of a long‐term cultivated inbred line and between at least four different C. granii cell culture strains tested in this study. Other diatoms present similar unit cell morphologies with various periods. Diatoms thereby offer a wide range of PhC structures, reproducible and equipped with well‐defined properties, possibly covering the entire UV‐vis–NIR spectral range. Diatoms therefore offer an alternative as cost‐effective and environmentally friendly produced photonic materials.

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Light-induced dynamic structural color by intracellular 3D photonic crystals in brown algae

Abstract: A photosynthetic algal intracellular organelle containing a living opal responds dynamically to environmental illumination.

Cited by 89 publications

References 34 publications

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

Tunable Structural Color Patterns Based on the Visible‐Light‐Responsive Dynamic Diselenide Metathesis

Marine-Derived Polymeric Materials and Biomimetics: An Overview

Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms

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