Optical Materials最新文献

{"title":"Pulsed laser deposition of Ho2O3 thin films as Röntgen material for X-ray nano-photonics","authors":"Sharath Rameshbabu ,&nbsp;Daniele Pergolesi ,&nbsp;Arnold Müller ,&nbsp;Christof Vockenhuber ,&nbsp;Amol V. Pansare ,&nbsp;Thomas Lippert ,&nbsp;Davide Bleiner","doi":"10.1016/j.optmat.2025.117557","DOIUrl":"10.1016/j.optmat.2025.117557","url":null,"abstract":"<div><div>Scalable and stoichiometrically controlled synthesis of epitaxial rare-earth oxide thin films is promising for advancing next-generation optoelectronic and quantum photonic technologies, including miniature X-ray laser systems. The growth of high-quality holmium oxide (Ho₂O₃) thin films on (001)-oriented yttria-stabilized zirconia (YSZ) substrates via pulsed laser deposition (PLD) was investigated, employing both KrF excimer (248 nm) and frequency-doubled Nd:YAG (532 nm) laser sources. Detailed structural characterization using high-resolution X-ray diffraction and reciprocal space mapping confirms the formation of (00<em>l</em>)-oriented, relaxed epitaxial films with excellent crystallinity and lattice parameters closely matching bulk Ho₂O₃. The impact of laser wavelength on film quality and growth dynamics was investigated, revealing that the λ = 532 nm laser yields film quality comparable to that achieved with excimer-laser-grown films. Elemental analysis using oxygen-16 resonance Rutherford backscattering spectrometry (RBS) demonstrates precise control over the Ho:O stoichiometry under optimized deposition conditions. The successful use of both ultraviolet and visible laser sources highlights the versatility of PLD for rare-earth oxide film growth, while offering flexibility in equipment accessibility. This study establishes a scalable, tunable pathway for fabricating stoichiometric, epitaxial Ho₂O₃ thin films, with promising implications for X-ray nano-photonic devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117557"},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lead-free antimony doped Cesium bismuth iodide (Cs3(Bi1-xSbx)2I9) single crystals for high temperature optoelectronic and sensing applications","authors":"Bharti Chandrakar ,&nbsp;Topeswar Meher ,&nbsp;Anil K. Sharma ,&nbsp;Jitendra Yadav ,&nbsp;Pawan Kumar ,&nbsp;Sudhir Kumar ,&nbsp;Jai Singh ,&nbsp;P. Rambabu ,&nbsp;Shalinta Tigga ,&nbsp;S.A. Khan ,&nbsp;H.P. Bhaskar ,&nbsp;Vineet K. Singh ,&nbsp;Dhirendra K. Chaudhary ,&nbsp;Shiv P. Patel","doi":"10.1016/j.optmat.2025.117541","DOIUrl":"10.1016/j.optmat.2025.117541","url":null,"abstract":"<div><div>In this work, we report the growth of high-quality single crystals of Cs₃Bi₂I₉, Cs₃(Bi_0.9Sb_0.1)₂I₉, and Cs₃(Bi_0.8Sb_0.2)₂I₉, with sizes of ∼5 mm, 3 mm, and 0.5 mm, respectively, using the inverse temperature crystallization (ITC) method. The structural and vibrational stability of these crystals was systematically evaluated by temperature-dependent Raman spectroscopy over the range of -175–245 °C. The Raman profiles confirm excellent thermal robustness, with no observable phase change or lattice distortions across the studied temperature window. Furthermore, electrical characterizations reveal enhanced conductivity and a significant reduction in trap state density, indicative of improved charge transport dynamics. The incorporation of antimony into the Cs₃Bi₂I₉ lattice is shown to effectively modulate the electrical and vibrational properties, providing a pathway for property tuning. Our findings demonstrate the potential of Sb-doped Cs₃Bi₂I₉ single crystals as promising, environmentally benign candidates for high-temperature optoelectronic and sensing devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117541"},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-healing CNTs/PDMS-BA composites as nonlinear optical limiter","authors":"Biao Dong ,&nbsp;Yuangang Lu ,&nbsp;Jiahao Zha ,&nbsp;Chongjun He","doi":"10.1016/j.optmat.2025.117560","DOIUrl":"10.1016/j.optmat.2025.117560","url":null,"abstract":"<div><div>The development of nonlinear optical limiting (NOL) materials with self-healing represents a significant new breakthrough in the field of optical limiting. Here, we innovatively prepare a novel self-healing NOL composites which is carbon nanotubes doped polydimethylsiloxane-boric acid crosslinked (CNTs-doped PDMS-BA, CPB), and achieve an excellent NOL performance. The dynamic network formed through transesterification between PDMS chains and BA enables efficient self-healing after mechanical damage, while CNTs ensure robust NOL properties. We experimentally measure the self-healing capability of CPB at different temperatures (25°C, 50°C, and 75°C), demonstrating elevated temperatures can accelerate self-healing. Even if CPB is damaged by laser, it can still achieve self-healing by excising the damaged spot, enabling its recyclability. We also measure the transmittance of 1 and 2 mm-thick CPB with 0.54 and 0.62 mg/mL CNTs concentrations under a nanosecond pulse laser with a wavelength of 1064 nm. For the 2 mm-thick CPB at 0.62 mg/mL, the linear and minimum transmittance with NOL effects at 1064 nm are 62.6% and 27.2%, respectively. Furthermore, cycling performance of CPB show that the NOL performance only decrease by 5% within three cycles. These outstanding features highlight the practical adaptability and stability of CPB, and the high damage threshold also indicates that CPB is a promising NOL composites.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117560"},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced UV and visible photoluminescence in PS/ZnO composites incorporating Ag and SiO2 dielectric layer","authors":"Yongfeng Qu,&nbsp;Ziyang Liu,&nbsp;Jijun Ding,&nbsp;Haixia Chen,&nbsp;Boquan Ren","doi":"10.1016/j.optmat.2025.117552","DOIUrl":"10.1016/j.optmat.2025.117552","url":null,"abstract":"<div><div>Zinc oxide (ZnO), a wide-bandgap semiconductor with excellent optoelectronic properties, suffers from low luminescence efficiency and surface-state-related issues, limiting its practical applications. In this study, we aim to enhance the ultraviolet (UV) and visible photoluminescence performance of ZnO by incorporating Ag nanostructures and a SiO₂ dielectric layer into a porous silicon (PS)-based hybrid structure. Three ZnO-based heterostructures, including PS/Ag/ZnO, PS/SiO₂/ZnO, and PS/Ag/SiO₂/ZnO, were fabricated using electrochemical etching and magnetron sputtering. The structural characterization through X-ray diffraction and scanning electron microscopy revealed that ZnO deposited on PS exhibited low crystallinity and porous island-like growth morphology. The incorporation of Ag and SiO₂ not only improved the adhesion and uniformity of ZnO films but also promoted oriented growth along specific crystallographic directions. Among these heterostructures, the PS/Ag/SiO₂/ZnO configuration demonstrated a 2.5-fold enhancement in UV emission and a 4-fold increase in visible emission, yielding a visible-to-UV intensity ratio of 15.38. These improvements were attributed to the synergistic effects of localized surface plasmon resonance induced by Ag nanoparticles and optical interference within the SiO₂ layer, which enhanced light extraction efficiency and suppressed non-radiative recombination. This work provides a novel structural design strategy for high-performance ZnO-based light-emitting devices, with potential applications in UV/visible sensors, emitters, and photocatalysts.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117552"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization and suppression of photocatalysis in Al-doped TiO2 particles using fractional factorial design to enhance optical performance in light-emitting diodes encapsulation","authors":"Amna Jwad Kadem ,&nbsp;Matthew Carnie ,&nbsp;Tom Dunlop ,&nbsp;Wafaa Al-Shatty ,&nbsp;Srimala Sreekantan ,&nbsp;Sivakumar Ramakrishnan","doi":"10.1016/j.optmat.2025.117550","DOIUrl":"10.1016/j.optmat.2025.117550","url":null,"abstract":"<div><div>This study tackles the challenge of high photocatalytic activity in TiO₂, a limiting factor for its use as a filler in LED encapsulants, by doping it with aluminum. We used the Fractional Factorial Design to investigate the impact of five parameters on the photocatalytic and adsorption performance of Al-doped TiO₂ particles. Characterization (XRD, SEM, EDX, FTIR, TGA, and nitrogen adsorption-desorption analysis) confirms the synthesis of mesoporous particles predominantly in the rutile phase, with traces of anatase. Successful Al incorporation yielded minimized agglomeration and enhanced thermal stability with a 0 %–0.9 % weight loss range. Our findings demonstrated that Al doping significantly reduced photocatalytic and adsorption performance, achieving a 97 % suppression of photocatalytic activity. Under optimized conditions, with an Al concentration of 0.51 g/L, calcination temperature of 900 °C, catalyst dosage of 1.5 g/L, MB solution temperature of 33.3 °C, and a pH of 4. The Al-doped TiO₂ exhibited a photodegradation efficiency of 3 % and a rate constant of 0.0004 min⁻¹, compared to 88 % PE and 0.02313 min⁻¹ RC for pure TiO₂. Calcination temperature significantly influences photocatalytic activity, while catalyst dosage and pH are key for adsorption. Epoxy films with Al-doped TiO₂ particles showed higher transparency (85 %), a refractive index of 1.52, and the ASTM <span><span>E313</span><svg><path></path></svg></span> Yellowness Index showed lower yellowing (YI 5) after UV exposure compared to TiO₂ films (YI 7). The optical bandgap was found to be 3.45 eV for the pure epoxy film, slightly reduced to 3.39 eV with TiO₂ incorporation, and restored to 3.45 eV with Al-doped TiO₂, indicating that Al doping mitigates the bandgap reduction caused by TiO₂. These results make Al-doped TiO₂ particles promising for enhancing the application of TiO₂ materials in light-emitting diode devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117550"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of cobalt concentration on the structural, optical, and photoelectrochemical properties of titanium dioxide nanorods synthesized by hydrothermal method","authors":"Walid Ismail ,&nbsp;Ghada Ibrahim ,&nbsp;Ahmed A. El-Naggar ,&nbsp;Mahmoud Abdelfatah ,&nbsp;Abdelhamid El-Shaer","doi":"10.1016/j.optmat.2025.117553","DOIUrl":"10.1016/j.optmat.2025.117553","url":null,"abstract":"<div><div>In this investigation, the effects of cobalt doping with various concentrations of Co²⁺ ions (0, 0.1, 0.3, 0.5, 0.7 M) on the physical and photoelectrochemical properties of TiO₂ were examined using an economical hydrothermal process. Properties of the samples were analyzed using XRD, Raman, SEM, UV–Vis, PL, photocurrent, Mott-Schottky, and EIS techniques. XRD patterns indicate that Co-doped TiO₂ films were found to have a rutile phase, with crystallite sizes ranging from 16.82 to 23.52 nm. Raman spectroscopy showed peaks at 144, 443, and 609 cm⁻¹, demonstrating the formation of the rutile phase of TiO₂. SEM images revealed that TiO₂ NRs were uniformly formed in a tetragonal structure, and the grain size increased with higher doping levels. In the visible spectrum. Photoluminescence (PL) measurements showed two significant emission peaks at 520 and 700 nm, with reduced strength due to doping. UV–Vis results indicated that the optical absorption edge of the films ranging 386–417 nm, and the estimated band gap (E_g) reduced from 3.21 to 2.89 eV with increasing doping levels. The photocurrent (PC) measurements revealed that the films produced behave as n-type semiconductors. Mott-Schottky results indicated an enhancement in the flat band potential and donor density increased as the dopant concentration increased from −0.47 to −0.72 V and 1.55 × 10¹⁸ to 6.15 × 10¹⁸ cm⁻³, respectively. Additionally, EIS results indicate a reduced in the resistance of charge transfer (RCT) for doped samples compare to pure samples. This is due to the lattice distortion resulting from Cobalt doping, which enhances the efficiency of charge transfer. Our results show that Co-doped TiO₂ films are viable options for biosensors, supercapacitors, and photovoltaic applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117553"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of a UV photodetector based on ZnO/CuO core-shell heterojunction nanorod arrays with Ag interdigitated electrodes","authors":"Zhongwei Zhang ,&nbsp;Yuhan Liu ,&nbsp;Bingnan Dong ,&nbsp;Dongfeng Qi ,&nbsp;Yanwen Yuan ,&nbsp;Guodong Lv ,&nbsp;Lei Li","doi":"10.1016/j.optmat.2025.117538","DOIUrl":"10.1016/j.optmat.2025.117538","url":null,"abstract":"<div><div>ZnO nanorods, characterized by their non-toxicity, wide bandgap, and large exciton binding energy, represent ideal materials for UV photodetectors. However, intrinsic ZnO nanorods exhibit limitations including high recombination rates of photogenerated electron-hole pairs, low photogenerated carrier transport efficiency, and photocorrosion issues. To address these challenges, this study fabricated ZnO/CuO core-shell heterojunctions through a combined low-temperature hydrothermal synthesis and liquid-phase deposition integrated with thermal annealing. Specifically, a CuO shell layer was deposited onto the surface of ZnO nanorods. The heterojunctions were systematically characterized for morphology, elemental composition, and crystalline structure. Subsequently, UV photodetector was fabricated by sputtering Ag interdigital electrodes onto the ZnO/CuO core-shell heterojunctions, followed by comprehensive evaluation of their optoelectronic performance. The results demonstrate that the ZnO/CuO core-shell heterojunctions exhibit enhanced absorption within the UV spectral range, achieving a photocurrent of 41.7 μA—a 1.6-fold enhancement compared to ZnO nanorods—with response and recovery times of 21 s and 13 s, respectively. The ZnO/CuO core-shell heterojunctions demonstrate significant potential for effectively suppressing the recombination probability of photogenerated carriers within the material system, thereby enhancing both charge carrier transport efficiency and photoelectric conversion performance. This distinctive architecture exhibits promising application prospects in photodetection technologies, particularly for developing high-performance optoelectronic devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117538"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of gold nano-particles embedded in the Langmuir Blodgett film of Poly (methyl methacrylate) for rapid screening of melamine adulterant in milk powder","authors":"Chayan Kumar Mitra ,&nbsp;Manash Ghosh ,&nbsp;Joydeep Chowdhury","doi":"10.1016/j.optmat.2025.117549","DOIUrl":"10.1016/j.optmat.2025.117549","url":null,"abstract":"<div><div>The current work elaborates the development of a rapid and sensitive method for trace detection of melamine precisely in powdered milk using Surface Enhanced Raman Scattering (SERS). The main focus of the work is to develop a reproducible SERS active substrate to detect trace level melamine contamination in milk products. Langmuir-Blodgett (LB) thin film of Poly (methyl methacrylate) (PMMA) with impregnated gold nanoparticles (AuNPs) has been used as a potent SERS active substrate. The LB film of PMMA and AuNPs embedded PMMA were meticulously characterized in our contemporary work. The efficacy of the as prepared substrate as a SERS sensing platform was studied up to trace concentrations using Raman probe molecules. Moreover, the reproducibility and homogeneity of the substrate was also verified using Raman mapping studies. The as prepared substrate was further engaged for melamine detection in powdered milk at trace concentrations. The sensor practically exhibits its noteworthy proficiency in detecting melamine adulteration in milk with limit of detection ∼220 ppb. The as prepared substrate emerges as a promising device for underscoring its significance in ensuring human health and food safety.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117549"},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Er3+/Yb3+ co-activated YNbO4 nanocrystalline phosphors: Up-conversion luminescence under the 980 nm excitation and integrated lifetime thermometry","authors":"Tamara B. Ivetić ,&nbsp;Boris Banjac ,&nbsp;Ljubica Đačanin Far ,&nbsp;Dragana Štrbac ,&nbsp;Zoran Ristić","doi":"10.1016/j.optmat.2025.117551","DOIUrl":"10.1016/j.optmat.2025.117551","url":null,"abstract":"<div><div>This paper presents the structure, morphology, optical and photoluminescent properties of erbium (1 at %) and ytterbium (2 at %) doped yttrium niobium oxide (YNbO₄) as a potential temperature sensor material. Obtained powder samples of fergusonite-β-like monoclinic crystalline structure of YNbO₄, confirmed by <em>X</em>-ray diffraction analysis, showed particles of about 1–3 μm in size. Photoluminescence emissions were detected in the visible (Vis) and near-infrared (NIR) regions after excitation at 980 nm as a result of the energy up-conversion (UC) process. The lifetime of the most intense Er³⁺ excited state ⁴<em>S</em>_3/2 level measured at 300 K was 0.238 ms. Thermometric properties were recorded at different temperatures and analyzed for the first time using the luminescence emission decay method. The relative sensitivity decreases from 0.23 % to 0.085 % K⁻¹, by varying the temperature from 300 to 600 K, indicating a good potential of this material for lifetime-based phosphor thermometry.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117551"},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Precise regulation of color rendering and multidimensional optical encryption enabled by electrically tunable all-dielectric grating devices","authors":"Xiaoyu Zhang ,&nbsp;Huabin Yang ,&nbsp;Wei Lin ,&nbsp;Can Weng","doi":"10.1016/j.optmat.2025.117548","DOIUrl":"10.1016/j.optmat.2025.117548","url":null,"abstract":"<div><div>Secure optical encryption and anti-counterfeiting technologies require platforms that are both physically reconfigurable and algorithmically robust. While electrically tunable structural color systems offer advantages like reversibility and high chromatic purity, achieving precise multi-parameter modulation and integrating them with advanced digital cryptographic methods remain a challenge. Herein, we report a novel multidimensional electro-optic encryption platform by integrating MgO-doped polymer-dispersed cholesteric liquid crystals (MgO-PDCLC) with all-dielectric nanograting structures. The key novelty of this work lies in the holistic synergy of material, device, and algorithmic innovations: Firstly, MgO doping critically enhances the electro-optic response, lowering operational voltage. Secondly, the bilayer architecture functions as a voltage-gated optical switch, dynamically concealing or revealing structural color patterns. The device's optical responses under variable voltage, incident angle, and polarization were comprehensively characterized through finite-difference time-domain (FDTD) simulations and experimental validations. A highly accurate nonlinear regression model (R² &gt; 0.9) was developed to quantitatively predict structural color parameters, enabling precise control. Utilizing these tunable spectral features, we propose a groundbreaking encryption scheme that seamlessly bridges physical photonic encoding and algorithmic security by coupling structural color outputs with Rivest Shamir Adleman (RSA) public-key cryptography. A dedicated software platform was implemented to realize this dual-layer encryption, enabling an information capacity up to 10ⁿ, where encryption is physically concealed without power. This work establishes a versatile framework that paves the way for next-generation secure displays, smart labeling, and anti-counterfeiting applications. <strong>Keywords</strong>: Structural color; Electro-optic tuning; Dielectric grating; Multidimensional coding; Anti-counterfeiting; Optical encryption.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"169 ","pages":"Article 117548"},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}