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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Double Lock Label Based on Thermosensitive Polymer Hydrogels for Information Camouflage and Multilevel Encryption

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(16)

Published: Feb. 1, 2022

Developing extra safety encryption technologies to prevent information leakage and combat fakes is in high demand but challenging. Herein, we propose a "double lock" strategy based on both lower critical solution temperature (LCST) upper (UCST) polymer hydrogels for camouflage multilevel encryption. Two types of were synthesized by the method random copolymerization. The number -CO-NH2 groups network structure changed enthalpic or entropic thermo-responsive hydrogels, ultimately precisely controlled their phase transition temperature. crosslink density governs diffusion kinetics, resulting difference time color change. combination multiple LCST UCST one label realized dynamic identification dimensions This work highly interesting fields encryption, anti-counterfeiting, smart responsive materials.

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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Structural color generation: from layered thin films to optical metasurfaces

Nanophotonics, Journal Year: 2023, Volume and Issue: 12(6), P. 1019 - 1081

Published: Feb. 21, 2023

Recent years have witnessed a rapid development in the field of structural coloration, colors generated from interaction nanostructures with light. Compared to conventional color generation based on pigments and dyes, exhibits unique advantages terms spatial resolution, operational stability, environmental friendliness, multiple functionality. Here, we discuss recent coloration layered thin films optical metasurfaces. This review first presents fundamentals science introduces few popular spaces used for evaluation. Then, it elaborates representative physical mechanisms generation, including Fabry-Pérot resonance, photonic crystal guided mode plasmon Mie resonance. Optimization methods efficient structure parameter searching, fabrication techniques large-scale low-cost manufacturing, as well device designs dynamic displaying are discussed subsequently. In end, surveys diverse applications various areas such printing, sensing, advanced photovoltaics.

Language: Английский

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High-throughput printing of customized structural-color graphics with circularly polarized reflection and mechanochromic response

Matter, Journal Year: 2024, Volume and Issue: 7(6), P. 2091 - 2107

Published: April 12, 2024

Language: Английский

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Fine Optimization of Colloidal Photonic Crystal Structural Color for Physically Unclonable Multiplex Encryption and Anti‐Counterfeiting

Advanced Science, Journal Year: 2024, Volume and Issue: 11(20)

Published: April 4, 2024

Abstract Robust anti‐counterfeiting techniques aim for easy identification while remaining difficult to forge, especially high‐value items such as currency and passports. However, many existing rely on deterministic processes, resulting in loopholes duplication counterfeiting. Therefore, achieving high‐level encryption authentication through conventional has remained a significant challenge. To address this, this work proposes solution that combined fluorescence structural colors, creating physically unclonable multiplex system (PUMES). In study, the physicochemical properties of colloidal photonic inks are systematically adjusted construct comprehensive printing phase diagram, revealing printable region. Furthermore, brightness color saturation inkjet‐printed crystal colors optimized by controlling substrate's hydrophobicity, printed droplet volume, addition noble metals. Finally, is incorporated build PUMES, including macroscopic patterns, well microscopic patterns. The PUMES with intrinsic randomness high encoding capacity authenticated deep learning algorithm, which proved be reliable efficient under various observation conditions. This approach can provide formidable resistance against counterfeiting, making it highly promising next‐generation

Language: Английский

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Dynamic High‐Capacity Structural‐Color Encryption Via Inkjet Printing and Image Recognition

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 17, 2024

Abstract Stimuli‐responsive structural‐color materials have received widespread attention in information encryption due to the significant color changes under different stimuli. However, trade‐off between capacity of input, security level, cost, and large‐area manufacturing greatly limits application structural colors encryption. Herein, dynamic high‐capacity high‐resolution are achieved by implementing printed total internal reflection (TIR) computer‐aided image recognition. The TIR microstructures prepared with relative humidity (RH) responsive polymer, which form a heterogeneous wettability system, can exhibit vibrant variation humidity. As implemented RH is changed, will expand or shrink precisely, enabling full‐color modulation across visible light range. With change, each pixel be specifically encoded, allowing for this encrypt within same pattern at RHs. Furthermore, This study precisely integrates tremendous pixels easily prepare various encrypted patterns, guarantee input low‐cost way. Moreover, through computer programming algorithm reading, patterns decoded decrypted real‐time, thus offering great potential further encryption, anti‐counterfeiting, multiplexing encoding, data storage.

Language: Английский

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Continuous resin refilling and hydrogen bond synergistically assisted 3D structural color printing

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

Published: Nov. 19, 2022

3D photonic crystals (PCs) have attracted extensive attention due to their unique optical properties. However, fabricating PCs structure by printing colloidal particles is limited control of assembly under a fast-printing speed. Here, we employ continuous digital light processing (DLP) strategy with hydrogen bonds assisted inks for well-assembled structures. Stable dispersion inside UV-curable system induced bonding and suction force curing manner cooperatively realize the simultaneous macroscopic microscopic particle assembly, which endows volumetric color property. Structural can be well regulated controlling diameter speed, through various complex structures desired structural distribution light-guide properties are acquired. This construction approach shows great potential in customized jewelry accessories, decoration device preparation, will innovate development color.

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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