Silver-Based Colorant on Self-Supported Nanoporous Titanium for Reversible Surface Printing

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Color-switching materials have broad applications in diverse fields. Integrating these onto metal surfaces unlocks responsive optical functionalities, expanding the potential of traditional metals. In this study, we present a versatile approach to developing robust color-switching system on titanium by integrating self-supported nanoporous TiO2 framework with silver-based colorants. The reversible process is driven ultraviolet (UV) light-induced reduction silver ions nanoparticles, followed oxidation hydrogen peroxide restore original appearance. This leverages high surface area and stability achieve uniform ion loading efficient photocatalytic reduction/H2O2 oxidation. Our demonstrates rapid, reversible, tunable color changes excellent durability over multiple cycles. These properties make material promising candidate for including printing other where or adaptive are required.

Language: Английский

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Enhancing Electrochromic Stability of Triphenylamine-Based Polymers via Monomer Ratio Optimization

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

In the pursuit of high-performance organic electrochromic (OEC) materials that transition from transparent to deep colors, we design and synthesize a series copolymers─termed MeTmPhFn─composed TPA fluorene with triethylene glycol ester groups incorporated. This is achieved through gradient tuning monomer ratios via Suzuki copolymerization. Five these polymers exhibit excellent film-forming properties, their devices demonstrate remarkable pale blue-to-reddish brown switching behavior. Notably, benefiting suitable continuity moderate porosity MeT0.5PhF0.5 film, device based on showcases rapid reversible times 2.5 s for coloring 1.3 bleaching, highlighting its exceptional responsiveness. achieves highest contrast 58.7% at 465 nm, paired impressive cycling stability, retaining 93.7% initial ratio after 1440 cycles, exhibits high coloration efficiency 619 cm2 C–1. study presents an effective approach designing synthesizing copolymers effectively colorless vibrant hues, paving way advanced applications in smart windows display technologies.

Language: Английский

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An Intelligent Multi‐Band Camouflage Textile Inspired by Natural Leaves

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

Published: March 26, 2025

Abstract An ideal optical camouflage technology requires the ability to simultaneously counter visible light, hyperspectral, and thermal infrared detection. However, developing intelligent materials with multi‐band all‐time stealth capabilities remains a significant challenge. Inspired by transpiration effect spectral characteristics of plant leaves, in this work, biomimetic multilayer fiber fabric is developed via electrospinning technology, which successfully replicated visible‐light, detectability properties exhibited natural leaves. Specifically, incorporating gradient porous structure fibers enabled simulation directional water transport cooling effects observed plants. This design achieved an evaporation rate 0.84 kg m −2 h −1 while maintaining maximum temperature difference within 1.01 °C compared Moreover, precise pigment formulations structures accurately mimicked key absorption reflection mechanisms effectively deceiving hyperspectral classification algorithms against leafy backgrounds manipulating near‐infrared spectra curves. The composite also reversible color changes, imitating different growth stages nature‐inspired electrospun strategy enhanced performance control materials, offering novel approach achieving comprehensive concealment environments.

Language: Английский

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Research on Camouflage Target Classification and Recognition Based on Mid Wave Infrared Hyperspectral Imaging

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(8), P. 1475 - 1475

Published: April 21, 2025

Mid-wave infrared (MWIR) hyperspectral imaging integrates MWIR technology with remote sensing, enabling the capture of radiative information that is difficult to obtain in visible spectrum, thus demonstrating significant value camouflage recognition and stealth design. However, there a notable lack open-source datasets effective classification methods this field. To address these challenges, study proposes dual-channel attention convolutional neural network (DACNet). First, we constructed four (GCL, SSCL, CW, LC) fill critical data gap. Second, issues spectral confusion between camouflaged targets backgrounds blurred spatial boundaries, DACNet employs independent branches extract deep spectral–spatial features while dynamically weighting through channel mechanisms, significantly enhancing target–background differentiation. Our experimental results demonstrate achieves an average accuracy (AA) 99.96%, 99.45%, 100%, 95.88%; overall (OA) 99.94%, 99.52%, 96.39%; Kappa coefficients 99.91%, 99.41%, 95.21% across datasets. The exhibit sharp edges minimal noise, outperforming five learning three machine approaches. Additional generalization experiments on public further validate DACNet’s superiority providing efficient novel approach for classification.

Language: Английский

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Molecular design of multifunctional integrated conjugated polymers with photoluminescence and electrochromic properties and constructing the electrochromic devices

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157931 - 157931

Published: Nov. 1, 2024

Language: Английский

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A Soluble ProDOT-Based Polymer and Its Electrochromic Device with Yellow-to-Green Color Switching Towards Camouflage Application

Molecules, Journal Year: 2024, Volume and Issue: 29(23), P. 5585 - 5585

Published: Nov. 26, 2024

Yellow-to-green electrochromic color switching plays a key role in the intelligent adaptive camouflage under visible light environment future military applications. Here, we designed and synthesized soluble conjugated pDPTD polymer, mainly based on perylo[1,12-bcd]thiophene novel ProDOT groups. The polymer displayed yellow-to-green electrochromism with large optical contrast fast times. Based film, device was achieved, showing an orange-yellow at −0.4 V L*a*b* coordinates of 88.5, 18.5, 34.2 pale green 0.7 85.6, −4.8, 11.5, together 43.5% times 2.4/3.2 s. These results indicated that could serve as potential material for yellow/green system

Language: Английский

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