Inorganic photochromic materials: Recent advances, mechanism, and emerging applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(2)

Published: April 21, 2024

Abstract Inorganic photochromic materials, as emerging photoresponsive have attracted unparalleled interest because of their potential applications in various photoactive devices such smart windows, optical memories, and decorations. Over the past decades, great research efforts been focused on further development high‐performance revealing underlying physical mechanism well exploring new advanced applications. However, significant challenges still exist achieving large contrast, realizing color‐tunable response, confirming detailed processes. In this review, latest progress inorganic materials is summarized from aspects advance photochromism, techniques for evaluating methods regulating behavior. The information storage, photocatalysis, anti‐counterfeiting, radiation dosimetry so are also discussed. perspectives terms practical presented. This review aims to provide fundamentals about mechanism, properties promote application devices.

Language: Английский

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All‐In‐One Photonic Crystals With Multi‐Stimuli‐Chromic, Color‐Recordable, Self‐Healable, and Adhesive Functions

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

Published: Oct. 15, 2024

Abstract Fabricating photonic crystals (PCs) with dynamic multi‐stimuli‐responsive structural colors, recordable and self‐healable properties is significant for their emerging applications, yet remains a big challenge. Here, an all‐in‐one multifunctional PC (MFPC) film outstanding mechanochromic, thermochromic, solvatochromic, color/shape‐recordable, self‐healable, adhesive functions designed prepared by simply non‐close‐assembling silica particles into the unique 2‐[[(Butylamino)carbonyl]oxy]ethyl acrylate (BCOEA) followed photopolymerization. The success mainly due to rational combination of non‐close‐packing structures BCOEA's characteristics, including its urethane groups numerous sacrificial hydrogen bonds, temperature‐dependent refractive index, swellable deformable polymer network, as well low glass‐transition temperature. MFPC's hue color saturation can be reversibly dynamically modulated strain/pressure/solvents temperature, respectively, thereby realizing visually spectrally sensing these stimuli. More interestingly, color‐responsiveness combined other endows MFPCs fascinating multilayer optical filters, inkless printing, reconfigurable multicolor patterns, stretching‐based anti‐counterfeiting, etc. This work offers new perspective designing next‐generation smart materials will facilitate all‐round applications.

Language: Английский

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Temperature‐Time‐Dependent Dynamic Pattern From Multi‐Inks Printing Based on Chiral Helix Superstructure

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract Blue phase liquid crystal (BPLC) dynamic patterns have attracted wide attention for promising applications in optical information manipulation and visualization sensing, owing to unique 3D chiral helix superstructure adjustable bright/abundant colors response extra fields. Inkjet printing has become an efficient approach achieving programmable BPLC patterns. However, it remains a challenge achieve independent “on/off” control of regional using the same ink due unrevealed temperature‐time‐dependent color change behavior determined by different inks. Herein, comprehensive understanding reflective bandgap shift law versus temperature/time is established investigating diffusion kinetics multiple inks (5CB, 6CB, 8CB) hydrophobically modified blue‐phase polymer templates. The three induce redshift followed blueshift color/reflectance wavelengths, but triggering times differ significantly at temperature, which attributed inks' transition characteristics, fluid properties, interaction with network. Dynamic multi‐color selective region are successfully fabricated based on time‐temperature controlled multi‐ink technique displaying time‐series multi‐level encryption (including “growing apple tree” “nested QR codes”). This study provides important insights into design fabrication advanced devices

Language: Английский

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Physical Unclonable Functions with Hyperspectral Imaging System for Ultrafast Storage and Authentication Enabled by Random Structural Color Domains

Advanced Science, Journal Year: 2024, Volume and Issue: 11(31)

Published: June 18, 2024

Abstract Physical unclonable function (PUF) is attractive in modern encryption technologies. Addressing the disadvantage of slow data storage/authentication optical PUF paramount for practical applications but remains an on‐going challenge. Here, a highly efficient strategy based on random structural color domains (SCDs) cellulose nanocrystal (CNC) proposed first time, combing with hyperspectral imaging system (HIS) ultrafast storage and authentication. By controlling growth fusion behavior tactoids CNC, SCDs display irregular distribution colors, shapes, sizes, reflectance spectra, which grant unique inherent fingerprint‐like characteristics that are non‐duplicated. Based images these fingerprint features used to develop two sets key generation methods, can be respectively authenticated at user‐end manufacturer‐front‐end achieving high coding capacity least 2 2304 . Notably, use HIS greatly shortens time reading (≈5 s recording, 0.5–0.7 authentication). This new labels not only solve complicated authentication PUF, also impulse development CNC industrial by reducing uniformity requirement.

Language: Английский

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A Comprehensive Review on the Enantiomeric Separation of Chiral Drugs Using Metal-Organic Frameworks

Chemosphere, Journal Year: 2024, Volume and Issue: 364, P. 143083 - 143083

Published: Aug. 16, 2024

Language: Английский

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Tunable colors from responsive 2D materials

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown

Published: June 4, 2024

Abstract One of the long‐sought‐after goals in responsive material development is to generate and tune colors for advanced emerging applications such as dynamic displays, light‐emitting diodes, lasers, smart windows, chromic fabrics, high‐security encryption, visual sensors. Benefiting from atomically thin nature well strong optical interaction, two‐dimensional (2D) materials can serve color‐generating centers both chemical pigment physical interference solution, gels, films, matrix interface systems, offer new promises color science applications. Concerning tunability, 2D systems have been demonstrated one ideal achieve desired goals, including change composition, layer thickness, strain, magic angle, thermally/photically/chemically responsive, magnetically‐responsive, electrically‐responsive, mechanically‐responsive. This makes it an attractive prospect device optoelectronics, nanomedicine. However, best our knowledge, no comprehensive review has reported specifically on color‐centered aspects materials. In this review, we highlight experimental approaches related tuning colors, reflective structural transmissive refine challenges propose opportunities future studies further system. Eventually, anticipated that will a resource source inspiration scientists, open up avenues advancement fields systems.

Language: Английский

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Smart liquid crystal elastomer fibers

Matter, Journal Year: 2025, Volume and Issue: 8(2), P. 101950 - 101950

Published: Feb. 1, 2025

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Emerging Trends in Bioinspired Superhydrophobic and Superoleophobic Sustainable Surfaces

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract Inspired by nature's ability to master materials for performance and sustainability, biomimicry has enabled the creation of bioinspired structural color, superadhesion, hydrophobicity hydrophilicity, among many others. This review summarizes emerging trends in novel sustainable fluorocarbon‐free designs creating superhydrophobic superoleophobic surfaces. It discusses methods, challenges, future directions, alongside impact computational modeling artificial intelligence accelerating experimental development more surface materials. While significant progress is made materials, surfaces remain a challenge. However, bioinspiration techniques supported platforms are paving way new renewable biodegradable repellent that meet environmental standards without sacrificing performance. Nevertheless, despite concerns, policies, several still continue apply fluorination other environmentally harmful achieve required standard repellency. As discussed this critical review, paradigm integrates advanced characterization, nanotechnology, additive manufacturing, modeling, coming, generate with tailored superhydrophobicity superoleophobicity while adhering standards.

Language: Английский

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Active plasmonic nanodevices: From basic principles to emerging applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(4)

Published: Nov. 1, 2024

Abstract Tunable plasmonics has shown a wide range of applications in (bio)chemical sensing, displays, actuators, photonic chips, biomedicine, etc. the last 2 decades. This review focuses on their recent development from device perspective, which involves understanding fundamental principles and specific with desired functionality compatibility. We classify these active plasmonic devices based nature structures working environment as colloidal‐based, chip‐based, colloidal chip‐based to further elaborate performance functions. also highlight progress tunable surface‐enhanced Raman spectroscopy, metasurfaces, chiroptics show emerging systems. conclude this general perception research trend field challenges for practical applications.

Language: Английский

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Printed Twisted Thin Films with Near-Infrared Bandgaps and Tailored Chiroptical Properties

ACS Applied Optical Materials, Journal Year: 2024, Volume and Issue: 2(12), P. 2540 - 2550

Published: Nov. 21, 2024

In this work, twisted helical cellulose nanocrystals films with preprogrammed circular polarization and near-infrared reflectance are fabricated via a blade-based 3D printing method. The composed of stacked nanoscale slabs high birefringence from unidirectionally organized nanocrystals. By changing the director, we achieved two types films: stacks anisotropic Bragg stacks. These highly transparent clear, achiral stack shows spectral region (1.3-1.4 μm). contrast, show concurrent left- right-handed circularly polarized properties, as opposed to left-handed natural films. We observe dual chiroptical properties dichroism peaks due in visible suggest that extended region. observations prompted us explore transition between continuous simulations. printed can act optical metamaterials helicity fill gap known photonic structures-the conventional chiral nematic material appearance controlled bandgap. hold potential larger-scale ordering unique nanostructures for polarized-sensitive photonic, thermal, energy management applications.

Language: Английский

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