Stretchable and Conductive Composite Structural Color Hydrogel Films as Bionic Electronic Skins

Advanced Science, Journal Year: 2021, Volume and Issue: 8(20)

Published: Aug. 26, 2021

Electronic skins have received increasing attention in biomedical areas. Current efforts about electronic are focused on the development of multifunctional materials to improve their performance. Here, authors propose a novel natural-synthetic polymers composite structural color hydrogel film with high stretchability, flexibility, conductivity, and superior self-reporting ability construct ideal multiple-signal bionic skins. The is prepared by using mixture polyacrylamide (PAM), silk fibroin (SF), poly(3,4-ethylenedioxythiophene):poly (4-styrene sulfonate) (PEDOT:PSS, PP), graphene oxide (GO) replicate colloidal crystal templates inverse opal scaffolds, followed subsequent acid treatment. Due these specific structures components, resultant imparted vivid conductivity while retaining hydrogel's original stretchability flexibility. demonstrate that has obvious variation electromechanical properties during stretching bending process, which could thus be utilized as multi-signal response skin realize real-time sensing electrical human motions. These features indicate proposed can widen practical value

Language: Английский

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Bioinspired Quasi‐3D Multiplexed Anti‐Counterfeit Imaging via Self‐Assembled and Nanoimprinted Photonic Architectures

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(3)

Published: Nov. 3, 2021

Innovative multiplexing technologies based on nano-optics for anti-counterfeiting have been proposed as overt and covert to secure products make them difficult counterfeit. However, most of these nano-optical materials are metasurfaces metamaterials with complex expensive fabrication process, often resulting in that not damage tolerant. Highly efficient easy process targeted intuitive effective authentication banknotes, documents, goods packing. Here, a simple strategy exploiting self-assembling nanoimprinting technique fabricate composite lattice photonic crystal architecture featuring full spatial control light, multiplexed full-pixel imaging, multichannel cryptography combined customized algorithms is reported. In particular, the real-time encryption/recognition mobile quick response codes labels postage stamp, encoded by architecture, both demonstrated. The wave optics scattering, diffraction, polarization involved also described, validated numerical simulations experiments. By introducing new degree freedom 3D space, image switching exhibits unprecedented variability encryption, providing promising roadmap achieve larger information capacity, better security, higher definition benefit modern security.

Language: Английский

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Bioinspired superwetting materials for water manipulation

Droplet, Journal Year: 2022, Volume and Issue: 1(2), P. 139 - 169

Published: Oct. 1, 2022

Abstract Water manipulation is crucial for a wide range of engineering applications, such as microfluidics, heat transfer, desalination, and water harvesting. Despite scientific achievements in the past few decades, it remains challenging to achieve efficient well‐controllable droplet transport practical applications. In nature, creatures have evolved ingenious wisdom manipulate adapt their environments. Learning from nature combining bioinspirations with advanced manufacturing technology are promising fabricate excellent materials directional transport. this review, we summarize mechanisms on various biological surfaces review recent progress fabricating hydrophilic surfaces, hybrid hydrophilic/hydrophobic slippery lubricant‐infused porous (SLIPSs) bioinspiration manipulation. These novel bioinspired great potential many fields, especially Finally, current challenges future perspectives field proposed.

Language: Английский

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Polymer-based responsive structural color materials

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 135, P. 101091 - 101091

Published: Feb. 10, 2023

Language: Английский

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Recent Progress in Responsive Structural Color

The Journal of Physical Chemistry Letters, Journal Year: 2022, Volume and Issue: 13(13), P. 2885 - 2900

Published: March 25, 2022

Structural color has been regarded as an ideal alternative to pigments because of the advantages environmental friendliness, resistance fading, and dynamic regulation. Responsive structural can give real-time visible feedback external stimuli thus great prospects in many applications, such displays, sensing, anticounterfeiting, information storage, healthcare monitoring. In this Perspective, we elucidate basic concepts, controllable fabrications, promising applications responsive colors. particular, systematically summarize general regulation mode all kinds systems. First, introduce chromogenic structures well modes color. Second, present fabrication methods patterned Then, systems are highlighted detail. Finally, existing challenges future perspectives on

Language: Английский

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Smart colloidal photonic crystal sensors

Advances in Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 324, P. 103089 - 103089

Published: Jan. 22, 2024

Language: Английский

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Replicating the Cynandra opis Butterfly's Structural Color for Bioinspired Bigrating Color Filters

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(9)

Published: Jan. 4, 2022

Multilayer grating structures, such as those found on the wings of butterfly Cynandra opis, are able to interact with light generate structural coloration. When illuminated and viewed at defined angles, color is characterized by exceptional purity brightness. To provide further insight into mechanism coloration, two-photon laser lithography used fabricate bioinspired bigrating nanostructures, whose optical properties may be controlled variation height period features. Through use both spectral measurements finite-element method simulations, herein specific feature dimensions identified that due combined effects multilayer interference diffraction excellent characteristics high over entire visible range. Additionally, it demonstrated and/or plays a central role in controlling hue purity. Importantly, tuneable structures significant utility filtering applications.

Language: Английский

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Self-growing photonic composites with programmable colors and mechanical properties

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Dec. 19, 2022

Abstract Many organisms produce stunning optical displays based on structural color instead of pigmentation. This or photonic is achieved through the interaction light with intricate micro-/nano-structures, which are “grown” from strong, sustainable biological materials such as chitin, keratin, and cellulose. In contrast, current synthetic colored usually brittle, inert, produced via energy-intensive processes, posing significant challenges to their practical uses. Inspired by brilliantly peacock feathers selectively grow keratin-based structures different bandgaps, we develop a self-growing composite system in bandgaps hence coloration can be easily tuned. selective growth polymer matrix polymerizable compounds feeding silica nanosphere-polymer system, thus effectively modulating without compromising nanostructural order. Such strategy not only allows material continuously vary its colors patterns an on-demand manner, but also endows it many appealing properties, including flexibility, toughness, self-healing ability, reshaping capability. As this innovative method simple, inexpensive, versatile, scalable, foresee potential meeting emerging requirements for various applications materials.

Language: Английский

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Printable structural colors and their emerging applications

Materials Today, Journal Year: 2023, Volume and Issue: 69, P. 133 - 159

Published: Sept. 11, 2023

Language: Английский

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Femtosecond laser direct writing of functional stimulus-responsive structures and applications

International Journal of Extreme Manufacturing, Journal Year: 2023, Volume and Issue: 5(4), P. 042012 - 042012

Published: Sept. 7, 2023

Abstract Diverse natural organisms possess stimulus-responsive structures to adapt the surrounding environment. Inspired by nature, researchers have developed various smart with adjustable properties and functions address demands of ever-changing application environments that are becoming more intricate. Among many fabrication methods for structures, femtosecond laser direct writing (FsLDW) has received increasing attention because its high precision, simplicity, true three-dimensional machining ability, wide applicability almost all materials. This paper systematically outlines state-of-the-art research on prepared FsLDW. Based introduction laser-matter interaction mainstream FsLDW-based manufacturing strategies, different stimulating factors can trigger structural responses intelligent such as magnetic field, light, temperature, pH, humidity, emphatically summarized. Various applications functional stimuli-responsive dynamic behaviors fabricated FsLDW, well present obstacles forthcoming development opportunities, discussed.

Language: Английский

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