Large-scale high purity and brightness structural color generation in layered thin film structures via coupled cavity resonance DOI Creative Commons

Danyan Wang,

Chengang Ji, Moxin Li

et al.

Nanophotonics, Journal Year: 2024, Volume and Issue: 13(24), P. 4491 - 4503

Published: Oct. 29, 2024

Structural colors, resulting from the interaction of light with nanostructured materials rather than pigments, present a promising avenue for diverse applications ranging ink-free printing to optical anti-counterfeiting. Achieving structural colors high purity and brightness over large areas at low costs is beneficial many practical applications, but still remains challenge current designs. Here, we introduce novel approach realizing large-scale in layered thin film structures that are characterized by both purity. Unlike conventional designs relying on single Fabry-Pérot cavity resonance, our method leverages coupled resonance between adjacent cavities achieve sharp intense transmission peaks significantly suppressed sideband intensity. We demonstrate this designing experimentally validating transmission-type red, green, blue using an Ag/SiO

Language: Английский

Height‐Gradiently‐Tunable Nanostructure Arrays by Grayscale Assembly Nanofabrication for Ultra‐realistic Imaging DOI
Guangzhou Geng, Ruhao Pan, Chensheng Li

et al.

Laser & Photonics Review, Journal Year: 2023, Volume and Issue: 17(9)

Published: June 29, 2023

Abstract Due to the limitation of nanofabrication technology, nanostructured arrays and devices are usually equal height, it is difficult change simultaneously its height in Z direction at X–Y regulation. However, tunable as an indispensable part structural spatial freedom control very conducive functional expansion innovation nanodevices. Here, a grayscale assembled fabrication method developed by combining e‐beam lithography with atomic layer deposition transfer wide range gradient nanostructures can be realized same array then applied high‐quality images. Following this strategy, ultra‐realistic relief‐nanostructured images 256 levels demonstrated, consisting height‐varying nanopillars 100 nm pixel size 6.4×10 10 dpi resolution. Especially, multi‐dimensional color based on metasurfaces C4 symmetric pixels designed prepared regulation nanofabrication, enabling strong ability hue, saturation, brightness display single 1.5 µm size. The as‐developed nanoconfigurations open new approach for multidimensionally regulations, showing great potential not only high‐resolution imaging but also more advancednanophotonic devices.

Language: Английский

Citations

12
Configurable swellability of hydrogel microstructure for structural-color-based imaging concealment/encryption DOI
Yunhui Wu, Lanlan Liu, Guohao Bo

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: 16(8), P. 4289 - 4298

Published: Jan. 1, 2024

Multi-stage MHM nanocavities with configurably swellable hydrogel interlayers are achieved through high-resolution electron-beam exposure, resulting in structural-color-based imaging concealment/encryption driven by humidity change.

Language: Английский

Citations

4
A kaleidoscopic hydrogel canvas for information encoding, encryption, and decryption via chemical-induced phase separation DOI Creative Commons
Junbo Hou, Yue Zhao

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

Citations

0
Dual-metal hybrid metasurface for liquid-tunable infrared polarization-selective perfect absorption DOI
Chenjie Dai,

Qianqian Zhou,

Tianyu Liu

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(7)

Published: Feb. 17, 2025

Nanostructure-based metasurfaces provide a promising route for arbitrarily manipulating light waves, especially versatile absorption. Although various meta-absorbers have been studied perfect absorption, it remains challenge to achieve high-contrast polarization-dependent absorption with dynamic tunability. Here, dual-metal hybrid metasurface is demonstrated polarization-selective and reflection liquid tuning capabilities in the infrared band. Based on metal–insulator–metal architecture, composed of Al/Ti nanostrips enables an intense resonance at x-polarization reflects as mirror y-polarization, thus acting high-performance linear polarizer. The peak wavelength can be continuously tailored from 1200 1850 nm average > 99% by scaling unit-cell period metasurfaces. Furthermore, exhibits large range switch (>750 nm) through immersion tuning, its above 99.5%. proposed liquid-tunable promote practical technologies polarizers, photodetectors, optical imaging.

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
Dynamic BIC in Customizable Hydrogel Metagratings for Advanced Information Security DOI Open Access

Lanxin Xu,

Jiaqi Wang, Zishun Li

et al.

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

Published: March 27, 2025

Abstract Optical cryptography leveraging responsive photonics harbors immense potential within encryption markets. Nonetheless, the current reliance on single inherent information encryption/decryption methods hinders advancements in achieving high‐precision and multistage data security, particularly for military‐grade encryption. Here, a water‐triggered decryption approach visible regime is proposed, exploiting precise dynamic regulation of quasi‐bound states continuum (q‐BIC) hydrogel metagratings. By exploring thermal interactions between scanning probe hydrogels, direct one‐step grayscale patterning hydrogels has been realized, allowing flexible design delicate 1D 1.5D Utilizing mechanism, sensitive q‐BIC resonance can be switched among ON, OFF, intermediate depending humidity levels, thus facilitating optical through properties hydrogels. Finally, Morse code designed achieved by arranging metagratings, which concealed under water immersion. During process (from high to low humidity), active shifting camouflaged enhance security. The strategy, along with patterning, offers promising platform encryption, security labels, displays, anti‐counterfeiting measures.

Language: Английский

Citations

0
Algorithm in chemistry: molecular logic gate-based data protection DOI
Yu Dong, Shiyu Feng, Weiguo Huang

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review focuses on stimuli-responsive material (SRM)-based data protection, emphasizing the integration of intricate logic and algorithms in SRM-constructed hardware. It also discusses current challenges future directions field.

Language: Английский

Citations

0
Transfer-Printing Hydrogel-Based Platform for Moisture-Driven Dynamic Display and Optical Anti-Counterfeiting DOI

Manchun Zheng,

Yang Shen, Lin Zheng

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(38), P. 45239 - 45248

Published: Sept. 13, 2023

Humidity-responsive materials offer a promising approach to achieving tunable metasurface systems due their fast and reversible swelling responses moisture, which enables many important applications, such as real-time humidity sensing, optical switches, dynamic displays, information encryption. However, the humidity-responsive structural coloration generally cannot provide high spatial resolution requires complex patterning process. Here, we present scalable moisture-driven color-changing Fabry–Pérot (FP)-like cavity composed of polyvinyl alcohol layer sandwiched between an upper gold nanoparticles assembly bottom mirror. Through nanoparticle contact printing, pixelated these cavities with sub-micrometer sizes without crosstalk achieved ultrahigh display ∼400 nm. Meanwhile, nanoparticle-based FP (NBFP) exhibit more vibrant colors than those conventional film-based ones broadband absorption disordered assembly. Moreover, NBFP rapid response (<300 ms), benefiting from membrane pores formed in gaps adjacent nanoparticles. Finally, demonstrated applications anti-counterfeiting multi-color printing. These results suggest that our will help realize colorful, fast, ultrahigh-resolution device security colorimetric sensing.

Language: Английский

Citations

10
Biomedical Applications of Deformable Hydrogel Microrobots DOI Creative Commons

Qinghua Cao,

Wenjun Chen,

Ying Zhong

et al.

Micromachines, Journal Year: 2023, Volume and Issue: 14(10), P. 1824 - 1824

Published: Sept. 24, 2023

Hydrogel, a material with outstanding biocompatibility and shape deformation ability, has recently become hot topic for researchers studying innovative functional materials due to the growth of new biomedicine. Due their stimulus responsiveness external environments, hydrogels have progressively evolved into “smart” responsive (such as pH, light, electricity, magnetism, temperature, humidity) in recent years. The physical chemical properties been used construct hydrogel micro-nano robots which demonstrated significant promise biomedical applications. different mechanisms are initially discussed this study; after which, number preparation techniques variety structural designs introduced. This study also highlights most developments robots’ biological applications, such drug delivery, stem cell treatment, cargo manipulation. On basis current state development, difficulties potential future paths identified.

Language: Английский

Citations

10
Self-Assembly of Nanoporous ZIF-8-Based Superstructures for Robust Chemical Sensing of Solvent Vapors DOI
Zhihuan Li, Feng Li,

Gaohang Huo

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 3479 - 3487

Published: Jan. 23, 2024

Self-assembly of metal–organic frameworks (MOFs) to construct optical sensors has been proposed detect chemicals by acclimating colors in response analytes that adsorbed on the surface MOF nanoparticles and interspaces between particles. However, instability weakly assembled structures held together van der Waals forces limits their active sensing application. Here, we propose full-color tunable superstructures are constructed self-assembled ZIF-8 postsynthetic poly(dimethylsiloxane) (PDMS) coating, which behave as robust sensors. The band was tuned controlling size particles also responded adsorption with different refractive indexes micropores In addition, PDMS-coated (ZIF-8@PDMS) were fabricated thermal evaporation optimize quality improve robustness solvent resistance during chemical sensing. Static dynamic results showed hierarchical porous endow ZIF-8@PDMS superstructure higher saturation faster comparison counterparts configured a superstructure.

Language: Английский

Citations

3