Ultra‐High Secure Holographically Steganographic Array with Spatiotemporal Dual‐Encryption Keys DOI
Ze‐Lin Zhu,

Xiuping Qi,

Zhihao Zhang

et al.

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

Published: Oct. 29, 2024

Abstract Independently‐manipulated optical encryption has attracted great attention due to its high security and multiple application scenarios. Although photochromic molecules have become preferred holographic display units, the integration of dynamic modulation both in hologram fluorescence for orthogonal is still challenged. Herein, a latticed holographically steganographic array constructed by incorporating plasticizer (tri‐o‐cresyl phosphate, TOCP) into spirooxazine (SO) based polymers, thereby modulating isomerization rate UV‐fluorescence kinetics between SO merocyanine (MC). The period reach saturated value each information bit device can be widely modulated 60 1700 s. Based on property, only through ultraviolet stimulation gradually converted from spatial lattice coordinates time. Then, hidden 3D image determined rapidly updatable reconstructed video with refresh 1.125 Hz above spatiotemporal dual‐encryption keys. This work provides bright path ultra‐high safety steganography adaptive stereoscopic imaging.

Language: Английский

Advanced Physical Layer Metasurface‐Empowered Cryptography with Robustness, High Capacity, and Enhanced Security DOI Open Access
Zhen Gu, Rensheng Xie, Yifeng Wang

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Physical layer metasurface‐empowered cryptography offers a novel approach to secure encryption. This study proposes an encryption method with robustness, high capacity, and enhanced security based on the dual‐band complex‐amplitude metasurface. By leveraging American Standard Code for Information Interchange (ASCII), both secret message compressed digital signature are encrypted transmitted together, eliminating codebook transmission reducing risks. The modified Visual Secret Sharing (VSS) scheme is employed strengthen security, fidelity, robustness. Additionally, three‐dimensional wavefront reconstruction algorithm used increase multivariate key provides extra of protection. A prototype metasurface sample designed, fabricated, characterized as proof‐of‐concept demonstration. measured results closely match numerical ones design objective, confirming viability resilience this high‐capacity, applications in anti‐counterfeiting data transmission.

Language: Английский

Citations

1
Bioinspired Hierarchical Photonic Structures with Controllable Polarization and Color for Optical-Multiplexed Information Encryption DOI

Lin-Yue Li,

Qiang-Wu Tan, Xiu‐Li Wang

et al.

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

Published: Feb. 6, 2025

Optical multiplexing technologies, which integrate multiple optical channels based on photonic structures, offer a significant solution for high-capacity information storage and advanced encryption. However, these materials are limited by their inherent unswitchable chiral result in restricted control over the spatial distribution of light. Here, we propose to construct an integrating optical-multiplexed structure using tunable 1D crystals orientation texture via combined self-assembly shear-aligning approach. In this system, created diverse ethyl cellulose (EC) offers wide range light modulations through phase retardation. When with chromatic layer formed EC, wavelength polarization achieved. Notably, due identical components modulation crystal layers, traceless interface between them ensures both high confidentiality durability. By leveraging hierarchical slices well-defined states structural colors created, enabling construction platform multiplexed multichannel 3D 4D This study presents promising strategy develop traceless, highly confidential units controllable color encryption technologies.

Language: Английский

Citations

1
Broadband Rapid Polarization Manipulation and Imaging Based on Pancharatnam‐Berry Optical Elements DOI
Qi Zhang,

Yingjie Shang,

Siyuan Qiao

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Abstract Polarization imaging, which can reveal indiscernible information that cannot easily be detected with traditional intensity cameras, plays a crucial role in many research fields. There are two main types of polarization imaging methods: time‐division multiplexed and space‐division imaging. These methods confront the problems temporal spatial resolution reduction. In this work, rapid linear‐polarization arbitrary manipulation technique based on Pancharatnam–Berry Optical Elements is proposed achieved as an module speed up to 899 Hz. Applying compact modulator optical or microscopic systems establish rapid, high‐resolution system. This method verified at detection, indoor outdoor photographic experiments, visible near‐infrared bands, exhibiting excellent results. It proven valid approach solve major dilemma incompatibility between it also highlights potential multidimensional applications.

Language: Английский

Citations

4
Enhanced Reconfigurable Visual Cryptography Strategies Utilizing Optical Metasurfaces DOI
Xianfeng Wu,

Yulin Xue,

Zhongyu Shi

et al.

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

Published: Feb. 6, 2025

The secure storage and transmission of information are core measures that ensure data security. Within intricate landscapes, reconfigurable encryption mechanisms serve as robust defenses against potential breaches encrypted data. Here, we propose a visual secret sharing (VSS) strategy leverages the capabilities optical metasurfaces exhibits dual-channel secondary scheme. This method employs three shared keys (SKs) hidden in near-field spin-decoupled far-field channels metasurface to perform initial encryption, enabling decryption two distinct information. Subsequently, leveraging clues from process, SKs channels, conjunction with corresponding codebook, can achieve encryption. As proof concept, conduct experiments decrypt first-time is reconfigurable. enhanced not only improves security parallel capacity but also offers repetitive dynamic without updating hardware.

Language: Английский

Citations

0
Holographically marked metasurface towards multi-user authentication DOI
Siqin Zhou, Sheng Wang, Zhenyu Zhang

et al.

Optics and Lasers in Engineering, Journal Year: 2025, Volume and Issue: 186, P. 108836 - 108836

Published: Feb. 19, 2025

Language: Английский

Citations

0
Cascaded Janus Meta-Optics: Generalized Platform for Bidirectional Asymmetric Modulation of Light DOI

Junseo Bang,

Youngjin Kim, Taewon Choi

et al.

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Language: Английский

Citations

0
Full-dimensional complex coherence properties tomography for multi-cipher information security DOI Creative Commons
Yonglei Liu,

Siting Dai,

Yimeng Zhu

et al.

Opto-Electronic Advances, Journal Year: 2025, Volume and Issue: 0(0), P. 240278 - 240278

Published: Jan. 1, 2025

Language: Английский

Citations

0
Photoaligned Twisted Nematic Liquid Crystal Elements for Multi-channel Polarization and Electro-Optical Encryption DOI
Fangfang Chen, Tong Shen,

Chenwen Ma

et al.

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 127752 - 127752

Published: May 1, 2025

Language: Английский

Citations

0
Robust Carbon‐Dot Optical Disks for Orthogonal Amplitude‐Polarization Encryption Storage DOI

Jingying Miao,

Shencheng Fu, Shuo Zhang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract High‐capacity steganography is crucial for the secure exchange of massive information. Exploring orthogonally optical recording can significantly improve encryption levels. However, due to lack robust media, hidden data are easy be cracked or destructed. Herein, carbon dots have switchable memory function between transmittance and polarization state after receiving excitation power adjustment discovered. A large‐area carbon‐based disk further constructed which measured resist high‐temperature damage at 423 K more than 405 h estimated remain stable room‐temperature (301 K) beyond 2341 years. With alternated arrangement dual functional one region disk, only by using an amplitude‐type holographic diffraction key polarized pattern correctly read out. The ultra‐high strategy also puts a bright way applications 3D image hiding, permanent preservation, anti‐counterfeiting labels.

Language: Английский

Citations

0
Ultra‐High Secure Holographically Steganographic Array with Spatiotemporal Dual‐Encryption Keys DOI
Ze‐Lin Zhu,

Xiuping Qi,

Zhihao Zhang

et al.

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

Published: Oct. 29, 2024

Abstract Independently‐manipulated optical encryption has attracted great attention due to its high security and multiple application scenarios. Although photochromic molecules have become preferred holographic display units, the integration of dynamic modulation both in hologram fluorescence for orthogonal is still challenged. Herein, a latticed holographically steganographic array constructed by incorporating plasticizer (tri‐o‐cresyl phosphate, TOCP) into spirooxazine (SO) based polymers, thereby modulating isomerization rate UV‐fluorescence kinetics between SO merocyanine (MC). The period reach saturated value each information bit device can be widely modulated 60 1700 s. Based on property, only through ultraviolet stimulation gradually converted from spatial lattice coordinates time. Then, hidden 3D image determined rapidly updatable reconstructed video with refresh 1.125 Hz above spatiotemporal dual‐encryption keys. This work provides bright path ultra‐high safety steganography adaptive stereoscopic imaging.

Language: Английский

Citations

0