Vapor Absorption and Liquefication Triggered Dynamic Color Changes and Pattern Conversions on Photonic Crystal Films for Anticounterfeiting DOI

Xin Zhang,

Ziyuan Zhang,

Long Jin

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 61360 - 61370

Published: Oct. 24, 2024

The widespread use of counterfeit goods caused significant damage to economy, personal data security, and public health. There is an urgent need develop innovative anticounterfeiting materials enhance their performance. Anticounterfeiting labels based on responsive photonic crystals have been widely researched for the inherent difficulty in replicating delicate structures structure colors. By integrating various distinct nanoparticles (NPs), it expected produce crystal patterns that offer more intricate color effects improved capabilities. In this work, we reported a label with dynamic variations solvent vapors pattern conversions upon vapor liquefication by utilizing three different including d-SiO2, h-SiO2, m-SiO2 NPs as building blocks. This exhibits wealth changes associated absorption time, rate, medium, microstructure nanoparticles, offering diverse visual showcasing interesting performances. change or conversion effect (PC) realized through refractive index induced filling, which involves no volume shows exceptional durability repeated applications. promising broad applications areas.

Language: Английский

Metadynamics Simulations of Three-Dimensional Nanocrystals Self-Assembled from Triblock Janus Nanoparticles: Implications for Light Filtering DOI
Hossein Eslami,

Florian Müller‐Plathe

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(15), P. 18045 - 18055

Published: July 24, 2024

Self-assembly of colloidal particles into 3D lattices, with potential applications as single crystals promising optical properties, has received considerable attention. The superior bandgap properties open lattices over their more easily self-assembling close-packed counterparts make them demanding for this purpose. However, due to the mechanical instability low-coordination self-assembly proven be challenging. Here, we employ a model triblock Janus nanoparticles, which includes surface chemistry (hydrophobic patches at poles and charges in equator) simulate three-dimensional nanocrystals. solvent is explicitly included simulation, hydrodynamic interactions are taken account by dissipative particle dynamics. Biased sampling simulations conducted drive between different phases. phase diagrams represent competition liquid phase, (pyrochlore, perovskite, diamond), [body-centered cubic (bcc) face-centered (fcc)] nanocrystals, whose stabilities depend on patch width, temperature, density. Patch widths allowing three contacts per stabilize pyrochlore nanocrystal low densities fcc high densities, those four perovskite bcc lattice higher upon further compression, lattice. diamond stabilized wide enough that provide strong bonding nanoparticles. Increasing density converts and, subsequently, higher-density calculated free energies conversion crystalline phases reveal barrier height nucleation (within stability domains) lower than denser lattices.

Language: Английский

Citations

5
High-Reflectivity Force-Chromic Photonic Crystal Elastic Materials Based on Nanospheres within an Elastomer for Applications in Sensing and Textile Fields DOI

Zhichuang Qi,

Yang Pang,

Liangliang Cui

et al.

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

Published: Jan. 9, 2025

By mimicking the biological process in which chameleons change lattice spacing of guanine nanocrystals to form and regulate their skin color, scientists have prepared force-chromic photonic crystal materials (FPMs) by encapsulating arrays nanospheres elastic matrices. However, low refractive index difference (Δn) between conventional matrix combinations typically makes material transparent with color reflectance. Besides, is mostly dominated hydrogel materials, gradually decrease or even lose stability sensing as solvent evaporates. PS@SiO2 core–shell a high while reducing risk microplasticity are ideal for preparing FPMs. In this work, we explored preparation method elastomers (FPEs) embedding them into di(ethylene glycol) ethyl ether acrylate (DEGEEA) polyethylene glycol monophenyl ester (PEGPEA) matrices via coassembly method. It was found that due large Δn (Δn > 0.05), FPE possessed reflectivity (R 82%), under force stimulation obvious. Meanwhile, had good tensile strain sensitivity (1.62 nm/%). Due absence solvents system, has excellent stability, structural remains unchanged 50 stretch/release cycling experiments. This not only simple method, fast response, reflectivity, but through validation experiments it great potential fields sensing, signal transmission, smart textiles.

Language: Английский

Citations

0
Resilient, Robust and Mechanical-Responsive Polydimethylsiloxane Composites Endowed by Interfacial Enhancement DOI
Wenwen Wang,

Huihui Zhan,

Weijie Cheng

et al.

Published: Jan. 1, 2025

The transition of material transparency induced by mechanical stimulation plays a crucial role in information encryption, anti-counterfeiting, and smart windows. However, developing multifunctional composite film that simultaneously possesses high elasticity sensitivity, low energy consumption, reusability remains significant challenge. In this work, homogeneous photonic crystal SiO2 were modified commercial available coupling agent KH570, enabling it to be chemically bonded the PDMS polymer networks, which enhanced interfacial interaction allowed periodic structure return its original state effectively both before after stretching. After undergoing 200 cycles testing, exhibited dissipation, with transmittance maintaining stability within range 90% 20%. At -50 °C, maximum loss factor was ~0.24, indicating retained resilience even under temperature. candidate for window supply only force. Furthermore, we adopted advanced imprinting technology, utilizing selectively designed molds embed arbitrary encrypted information. By controlling duration 5 seconds, 30 seconds 80 achieved differentiated displays same strain conditions on single film. Therefore, work can provide new insights into fields such as windows, sensing.

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
From touching to seeing: visualized pressure sensing in electronic skins DOI Open Access
Xingyi Li, Zhifang Wu, Zetong Chen

et al.

Soft Science, Journal Year: 2025, Volume and Issue: 5(2)

Published: March 13, 2025

Electronic skins (e-skins) are desired to perceive both the intensity and spatial distribution of applied pressures. Despite continuous progress in design high-performance individual pressure sensors, acquisition locational information pressures still mostly relies on preparation high-density sensor matrixes within e-skins, which dramatically increases device complexity hinders straightforward human-machine interaction. In recent years, integration optical visualization units e-skins has been raised as an alternative strategy for obtaining distribution. By utilizing pressure-induced light emission color change, could be visualized directly through distinct signals, eliminating necessity additional data processing display modules. this perspective, main strategies achieve introduced, including their mechanism, layout, materials, applications. The challenges prospects emerging field also discussed.

Language: Английский

Citations

0
Resilient and robust mechanoresponsive polydimethylsiloxane/SiO2 composites induced by interfacial enhancement DOI

Huihui Zhan,

Weijie Cheng, Fusheng Liu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137361 - 137361

Published: March 1, 2025

Language: Английский

Citations

0
Structural color: an emerging nanophotonic strategy for multicolor and functionalized applications DOI Creative Commons
Wenhao Wang, Long Wang, Qianqian Fu

et al.

Opto-Electronic Science, Journal Year: 2025, Volume and Issue: 0(0), P. 240030 - 240030

Published: Jan. 1, 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
Patterned structural color generation fabricated by laser post-processing technology DOI
Xiu Li, Yeqi Wang,

Jiong Liang

et al.

Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 188, P. 112949 - 112949

Published: April 12, 2025

Language: Английский

Citations

0
Vapor Absorption and Liquefication Triggered Dynamic Color Changes and Pattern Conversions on Photonic Crystal Films for Anticounterfeiting DOI

Xin Zhang,

Ziyuan Zhang,

Long Jin

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 61360 - 61370

Published: Oct. 24, 2024

The widespread use of counterfeit goods caused significant damage to economy, personal data security, and public health. There is an urgent need develop innovative anticounterfeiting materials enhance their performance. Anticounterfeiting labels based on responsive photonic crystals have been widely researched for the inherent difficulty in replicating delicate structures structure colors. By integrating various distinct nanoparticles (NPs), it expected produce crystal patterns that offer more intricate color effects improved capabilities. In this work, we reported a label with dynamic variations solvent vapors pattern conversions upon vapor liquefication by utilizing three different including d-SiO2, h-SiO2, m-SiO2 NPs as building blocks. This exhibits wealth changes associated absorption time, rate, medium, microstructure nanoparticles, offering diverse visual showcasing interesting performances. change or conversion effect (PC) realized through refractive index induced filling, which involves no volume shows exceptional durability repeated applications. promising broad applications areas.

Language: Английский

Citations

2