Structural Color Ionic Hydrogel Patches for Wound Management

ACS Nano, Journal Year: 2022, Volume and Issue: 17(2), P. 1437 - 1447

Published: Dec. 13, 2022

Ionic hydrogels have attracted extensive attention because of their wide applicability in electronic skins, biosensors, and other biomedical areas. Tremendous effort is dedicated to developing ionic with improved detection accuracy multifunctionality. Herein, we present an inverse opal scaffold-based structural color hydrogel the desired features as intelligent patches for wound management. The were composed a polyacrylamide-poly(vinyl alcohol)-polyethylenimine-lithium chloride (PAM–PVA-PEI-LiCl) scaffold vascular endothelial growth factor (VEGF) mixed methacrylated gelatin (GelMA) filler surface. imparted composite brilliant color, conductive property, freezing resistance, while VEGF-GelMA surface could not only prevent from interference complex conditions but also contribute cell proliferation tissue repair wounds. Thus, serve skins vivo healing monitoring high reliability. These indicate that proposed great potential clinical applications.

Language: Английский

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Dynamic Anti-Counterfeiting Labels with Enhanced Multi-Level Information Encryption

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 15(1), P. 2104 - 2111

Published: Dec. 21, 2022

Information encryption is an important means to improve the security of anti-counterfeiting labels. At present, it still challenging realize label with multi-function, high factor, low production cost, and easy detection identification. Herein, using inkjet screen printing technology, we construct a multi-dimensional multi-level dynamic optical based on instantaneously luminescent quantum dots long afterglow phosphor, whose color luminous intensity varied in response time. Self-assembled dot patterns intrinsic fingerprint information endow physical unclonable functions (PUFs), level significantly improved view variation temporal dimension. Furthermore, convolutional residual neural networks are used decode massive PUFs, enabling fast accurate identification anti-counterfeit

Language: Английский

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Sophisticated yet Convenient Information Encryption/Decryption Based on Synergistically Time‐/Temperature‐Resolved Photonic Inks

Advanced Science, Journal Year: 2022, Volume and Issue: 10(5)

Published: Dec. 11, 2022

Exploring high-safety but convenient encryption and decryption technologies to combat threats of information leakage is urgently needed remains a great challenge. Here, synergistically time- temperature-resolved coding/decoding solution based on functional photonic inks demonstrated. Encrypted messages can be stored into multiple channels with dynamic-color patterns, only enabled at appointed temperature time points. Notably, the ink easily processed quick-response codes multipixel plates. With high transparency responsive color variations controlled by compositions ambient temperatures, advanced 3D stacking multichannel coding Morse techniques applied for multi-information storage, complex anticounterfeiting, interference. This study paves an avenue design development dynamic high-end anticounterfeiting applications.

Language: Английский

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Freeze-derived heterogeneous structural color films

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

Published: July 13, 2022

Abstract Structural colors have a demonstrated value in constructing various functional materials. Efforts this area are devoted to developing stratagem for generating heterogeneous structurally colored materials with new architectures and functions. Here, inspired by icing process nature ice-templating technologies, we present freeze-derived structural color hydrogels multiscale features. We find that the space-occupying effect of ice crystals is helpful tuning distance non-close-packed colloidal crystal nanoparticles, resulting corresponding reflection wavelength shifts area. Thus, effectively controlling growth photo-polymerizing them, desired structures morphologies can be customized. Other than traditional monochromatic structure hydrogels, resultant imparted structured multi-compartment body multi-color designed patterns through varying freezing design. Based on these features, also explored potential heterotypic information encryptions decryptions creating spatiotemporally controlled areas. believe inverse ice-template will offer routes construction modulation next generation smart complex architectures.

Language: Английский

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A Review on the Bioinspired Photocatalysts and Photocatalytic Systems

Advanced Sustainable Systems, Journal Year: 2022, Volume and Issue: 6(5)

Published: March 3, 2022

Abstract After long‐term evolution, organisms in nature have achieved optimal structure, organization, and function to adapt the environment. Some ingenious biological structures highly efficient solar light absorption, matter transmission, natural photocatalytic properties, such as leaves, sunflowers, seaweeds, algae, bacteria. Artificial photocatalysis, which involves CO 2 reduction water splitting obtain green renewable energy or oxygen, is of great significance for solving problem shortages, achieving carbon neutrality, building a sustainable society. In order improve efficiency artificial it necessary develop photocatalysts by expanding ideas drawing innovative inspiration from nature. Artificially constructed with bionic simulating gradually become an exciting research field potential recent years. This article reviews bioinspired systems aspects principle, composition, construction method, performance. It expected that this review will help researchers systematic in‐depth understanding biomimetic design systems.

Language: Английский

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Ultrathin photonic crystal film with supersensitive thermochromism in air

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 139075 - 139075

Published: Sept. 7, 2022

Language: Английский

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“Acrostic” Encryption: Stress‐Manipulation on Information Display

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(31)

Published: April 9, 2023

Abstract Polymers are ideal materials for information printing and storage encryption through multiple channels. In this study, the visible color, fluorescent, stress‐color combined to print information. Stress‐color is achieved using an acid‐tunable dynamic reaction between a β‐diketone amine group via light‐induced transformation of spiropyran (SP), which also directly prints color The fluorescent patterns stable SP released from enaminone structure. By achieving coding, data further encrypted in “acrostic” form by programmatically coding at several stages. pattern or closely related decoding strain, whereas display all written various strains. As result, secret hidden among public data, resulting acrostic encryption.

Language: Английский

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Interfacial Colloidal Self-Assembly for Functional Materials

Accounts of Chemical Research, Journal Year: 2023, Volume and Issue: 56(7), P. 740 - 751

Published: March 15, 2023

ConspectusSelf-assembly bridges nanoscale and microscale colloidal particles into macroscale functional materials. In particular, self-assembly processes occurring at the liquid/liquid or solid/liquid/air interfaces hold great promise in constructing large-scale two- three-dimensional (2D 3D) architectures. Interaction of assemblies leads to emergent collective properties not found individual building blocks, offering a much larger parameter space tune material properties. Interfacial methods are rapid, cost-effective, scalable, compatible with existing fabrication technologies, thus promoting widespread interest broad range research fields.Surface chemistry nanoparticles plays predominant role driving water/oil interfaces. Amphiphilic coated mixed polymer brushes mussel-inspired polydopamine were demonstrated self-assemble closely packed thin films, enabling diverse applications from electrochemical sensors catalysis surface-enhanced optical amphiphilic gold integrated graphene paper obtain flexible electrodes modular approach. The robust, biocompatible exceptional electrocatalytic activities showed excellent sensitivity reproducibility biosensing. Recyclable catalysts prepared by transferring monolayer polydopamine-coated nanocatalysts both hydrophilic hydrophobic substrates. immobilized easily recovered recycled without loss catalytic activity. Plasmonic self-assembled plasmonic substrate for Raman scattering, metal-enhanced fluorescence, modulated fluorescence resonance energy transfer (FRET). Strong enhancement was accomplished rationally directing probes electromagnetic hotspots. Optimal FRET realized precisely controlling spacing between metal surface fluorophores tuning plasmon wavelength match fluorescent dye.At liquid/solid interfaces, infiltration-assisted (IFAST) introduces liquid infiltration as new factor control degree order assemblies. strong flow formation amorphous arrays that display noniridescent structural colors. This method is particle inks, any solid permeable dispersing liquids but particle-excluding suitable IFAST assembly. Therefore, technology offers scalable color patterns full-spectrum coverage unprecedented flexibility. Metal-organic framework either spherical polyhedral morphology used ink Mayer rod coating on wettability patterned photopapers, leading photonic structures vapor-responsive Anticounterfeiting labels have also been developed based complex features encoded structures.Interfacial interface assembly proven be versatile platforms produce materials well-defined applications. These platform technologies promising manufacturing value-added

Language: Английский

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Bio‐inspired optical structures for enhancing luminescence

Exploration, Journal Year: 2023, Volume and Issue: 3(4)

Published: April 11, 2023

Luminescence is an essential signal for many plants, insects, and marine organisms to attract the opposite sex, avoid predators, so on. Most luminescent living have ingenious optical structures which can help them get high performances. These remarkable efficient been formed by natural selection from long-time evolution. Researchers keenly observed enhanced luminescence phenomena studied how these happen in order learn characteristics of bio-photonics. In this review, we summarize enhancing their applications. The are classified according different functions. We focus on researchers use biological inspirations enhance processes, such as chemiluminescence (CL), photoluminescence (PL), electroluminescence (EL). It lays a foundation further research applications enhancement. Furthermore, give examples enhancement bio-inspired information encryption, biochemical detection, light sources. show that it possible solve complex problems Our work will provide guidance biomimetic optics, micro- nano-optical structures, luminescence.

Language: Английский

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Bioinspired multichannel colorful encryption through kirigami activating grating

Science Bulletin, Journal Year: 2023, Volume and Issue: 68(3), P. 276 - 283

Published: Jan. 20, 2023

Language: Английский

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