Ultra‐Bright Stimuli‐Responsive Photonic Crystals for High‐Performance Anticounterfeiting Coatings DOI Open Access

Ziqiang Tian,

Jinyao Zhu,

Qilin Guo

et al.

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

Published: Dec. 9, 2024

Abstract Photonic crystals (PCs) with unique light manipulation capability have attracted widespread attentions. However, weak photonic bandgaps, poor structural color saturation, and tedious preparation process restrict their further development practical application. Herein, an ultra‐bright stimuli‐responsive PC film excellent optical performance is prepared by assembly of cadmium sulfide@polyacrylic acid (CdS@PAA) core–shell nanoparticles into PCs through molecule‐mediated shearing‐induced technique (MSAT), this fabrication fast facile, the solid periodic micro/nano‐structures can be formed within 10 s, a wide selection range obtained. The high refractive index CdS guarantees brightness films. prerequisite using MSAT for large‐sized that CdS@PAA possess appropriate thickness PAA shell. Compared conventional PCs, films present strong bandgaps relative reflectance up to 130% compared standard aluminum mirror, which more than four times reflectivity PS@PAA microspheres. In addition, paint mashing blending it transparent polydimethylsiloxane (PDMS) matrix, coating alkali treated pigments achieve good water response ability anticounterfeiting effect.

Language: Английский

Structural Color Colloidal Photonic Crystals for Biomedical Applications DOI Creative Commons

Wenhui Zhang,

Yangnan Hu, Pan Feng

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Photonic crystals are a new class of optical microstructure materials characterized by dielectric constant that varies periodically with space and features photonic bandgap. Inspired natural such as butterfly scales, series artificial developed for use in integrated platforms, biosensing, communication, other fields. Among them, colloidal (CPCs) have gained widespread attention due to their excellent properties advantages, ease preparation functionalization. This work reviews the classification self-assembly principles CPCs, details some latest biomedical applications large-area, high-quality CPCs prepared using advanced methods, summarizes existing challenges CPC construction application, anticipates future development directions optimization strategy. With further advancements, expected play more critical role biosensors, drug delivery, cell research, fields, bringing significant benefits research clinical practice.

Language: Английский

Citations

7
Lignin Ultrafiltration Fractionation and Self-Assembly to Monodisperse Nanoparticles for Photonic Materials DOI Creative Commons
Jun Long, Jiayue Lu, Liheng Chen

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 6210 - 6219

Published: Feb. 5, 2025

Lignin, a natural aromatic polymer, is promising candidate for sustainable photonic materials. However, its heterogeneity hinders uniform nanoparticle production. This study employs membrane ultrafiltration to fractionate alkaline lignin into five molecular weight fractions (UL1-UL5) and synthesizes nanoparticles (LNPs) via antisolvent self-assembly. Low-molecular-weight yielded highly uniform, monodisperse LNPs (PDI < 0.1), while higher-molecular-weight produced irregular particles. Notably, strong correlation between size was observed, with particle decreasing as the increased. Atomic force microscopy density functional theory simulations provided insights intermolecular interactions of fractions, showing that low-molecular-weight exhibited stronger forces, facilitating ordered These findings underscore pivotal role in tailoring properties achieving precise control over formation. highlights potential ultrafiltration-based approaches producing lignin-based materials customizable optical properties.

Language: Английский

Citations

0
Fabrication of Large-Area, Crack-Free Inverse Opals on Microfluidic Chips via Wet Infiltration DOI
Peng Dai, Cuimin Sun,

Wenyun Su

et al.

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

Published: Feb. 25, 2025

Inverse opals (IOs) exhibit attractive optical properties and high interconnected porosity; however, the large-area fabrication of continuously ordered IOs remains challenging. This study presents a method for preparing crack-free IO hydrogel films using microfluidic chip. Through "wet infiltration" technique, drying process template is eliminated, thereby avoiding dense cracks that result from particle shrinkage. The fabricated achieve long-range order with lateral dimensions 1 × 1.2 cm2 thicknesses mm, thickness precisely controlled chamber. absence covering layer exposes highly porous photonic structures on surface film. Additionally, this preparation adopts varying ratios precursors, making it suitable various applications. represents simple, cost-effective, scalable approach generating thick diverse

Language: Английский

Citations

0
Bio-inspired multifunctional flexible visual sensors based on structural color materials DOI
Long Bai, Yong Jin, Liangjie Shi

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161344 - 161344

Published: March 1, 2025

Language: Английский

Citations

0
Structural Color Coating with Anti-fouling and Antibacterial Functions Based on Photonic Crystals Constructed by Fluorinated Polymer Microspheres with Quaternary Ammonium Salt Groups DOI

Wei-Han Tao,

Jingjie Ge, Yinchun Fang

et al.

Chemical Research in Chinese Universities, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Language: Английский

Citations

0
Chameleon-inspired structural color fabrics with photoelectric dual-signal outputs for human motion monitoring DOI

Shuai Li,

Jihan Wang,

Yuanshu Xiao

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137538 - 137538

Published: April 1, 2025

Language: Английский

Citations

0
Ultra‐Bright Stimuli‐Responsive Photonic Crystals for High‐Performance Anticounterfeiting Coatings DOI Open Access

Ziqiang Tian,

Jinyao Zhu,

Qilin Guo

et al.

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

Published: Dec. 9, 2024

Abstract Photonic crystals (PCs) with unique light manipulation capability have attracted widespread attentions. However, weak photonic bandgaps, poor structural color saturation, and tedious preparation process restrict their further development practical application. Herein, an ultra‐bright stimuli‐responsive PC film excellent optical performance is prepared by assembly of cadmium sulfide@polyacrylic acid (CdS@PAA) core–shell nanoparticles into PCs through molecule‐mediated shearing‐induced technique (MSAT), this fabrication fast facile, the solid periodic micro/nano‐structures can be formed within 10 s, a wide selection range obtained. The high refractive index CdS guarantees brightness films. prerequisite using MSAT for large‐sized that CdS@PAA possess appropriate thickness PAA shell. Compared conventional PCs, films present strong bandgaps relative reflectance up to 130% compared standard aluminum mirror, which more than four times reflectivity PS@PAA microspheres. In addition, paint mashing blending it transparent polydimethylsiloxane (PDMS) matrix, coating alkali treated pigments achieve good water response ability anticounterfeiting effect.

Language: Английский

Citations

2