Near-infrared mechanoluminescence from Sr3Sn2O7:Nd3+ for potential bioimaging and non-destructive detection

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Liquid nitrogen temperature to 700 K Bi3+ thermoluminescence: Toward wide-temperature-range light dosimeters for versatile anti-counterfeiting, information storage, and x-ray imaging

Applied Physics Reviews, Год журнала: 2024, Номер 11(4)

Опубликована: Окт. 31, 2024

Discovering light dosimeters that can function effectively from liquid nitrogen temperature to 700 K presents significant challenges. Such facilitate a range of cutting-edge applications, including anti-counterfeiting measures at low for cryo-preservation. To such discovery, stacked vacuum referred binding energy diagrams the LiYGeO4 cluster crystals have been first constructed. They offer robust method controlling both electron and hole trapping depth in crystals. Wide shifting Bi2+ Eu2+ thermoluminescence (TL) glow bands emerges 200 500 LiYxLu1-xGeO4:0.01Bi3+ LiYxLu1-xGeO4:0.01Bi3+, 0.001Eu3+, by changing x, facilitating conduction band tailoring. Bi4+ TL 300 LiYGezSi1-zO4:0.01Bi3+, tuning z, valence peaks near 135, 185, 232, 311 emerge LiyNa1-yYGeO4: 0.001Bi3+. Particularly, discovered Bi3+ or/and lanthanide modified exhibit superior charge carrier storage capacity minimal fading properties. For instance, ratio intensity optimized LiYGe0.75Si0.25O4:0.001Bi3+ industrial BaFBr(I):Eu2+ is as high ∼4. Interestingly, imaging intense optically driven ultraviolet-A (UVA) luminescence has validated 254 nm energized LiY0.25Lu0.75GeO4:0.01Bi3+ with 100 lux white LED illumination. Together ZnS:Mn2+, LiTaO3:Bi3+, Sm3+, Cs2ZrCl6:Sb3+ perovskites, realization wide offers promising use versatile anti-counterfeiting, information storage, delayed x-ray purposes.

Язык: Английский

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SrAl₂O₄: Eu²⁺, Dy³⁺ mechanoluminescent phosphor for potential bearings stress distribution imaging

Journal of the American Ceramic Society, Год журнала: 2025, Номер unknown

Опубликована: Март 22, 2025

Abstract Mechanoluminescence (ML) materials have shown broad application potentials in stress sensing and structural monitoring due to situ, real‐time monitoring, low trigger threshold. However, the accurate detection of distribution inside machinery still faces certain challenges. Based on a flexible ML film prepared by SrAl 2 O 4 : Eu 2+ , Dy 3+ phosphor polydimethylsiloxane, this paper proposes “stress difference” strategy monitor mechanical structure. By applying different loads recording linear relationship between intensity load, local engine bearing can be measured. comparing difference I PersL specific machine is successfully inferred. This study provides new ideas for sensing, which may open up an innovative method structures.

Язык: Английский

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Regulating Broadband Near‐Infrared Mechanoluminescence via Energy‐Level Engineering for Potential Biomechanical Imaging

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 9, 2024

Abstract Near‐infrared mechanoluminescent (NIR ML) materials have attracted attention due to their advantages, such as in situ and real‐time monitoring of biomechanical information vivo. However, most ML are focused on the UV–vis light range, which limits potential applications biological field. In this work, a broadband NIR material Ca 2 YGa 3 Ge O 12 : 0.10Cr 3+ (CYGGG: ) is successfully prepared by chemical co‐substitution Cr heavy doping. Density functional theory (DFT) calculations used determine type defects material, composite formed interstitial oxygen (i ′′) antisite (Ca Y ′ ‐ °) mostly dominate ML. ions act electronic bridges regulate energy levels, becoming key turning Nd ion's Finally, based excellent properties CYGGG: , 0.01Nd composites can penetrate pork tissues different compositions/thicknesses under stress loads. Potentially, work tries realize tissue imaging, providing new way for application materials.

Язык: Английский

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The Optical Encoder Based on Mechanoluminescent Materials and Application in Dual‐Key Encryption

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Abstract Optical information encryption is an effective security strategy currently used to protect data and prevent leakage. However, the optical technology based on mechanoluminescent (ML) materials faces challenges of single mode lack systematic dual‐key decryption strategies. In this study, a three‐layer structure encoder proposed using porous ML material as luminescent layer, quartz transparent tube with pressure‐sensing capabilities stress‐loading photodetector recognition layer. A system evolution mechanism Ba‐Gua constructed. The encoding process completed within micro darkroom fabricated 3D printing technology. This incorporates virtual position in conjunction trigram orientation, requiring two keys for correct decryption: “Combination Relative Intensity Ratio” “Virtual Position Space Code”. By linking emission spectrum information, dynamic, rewritable hybrid digital Chinese character established. offer new directions concealing confidential multidimensional applications.

Язык: Английский

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Competitive Phase Transition of NaYS₂ in Non‐Vacuum Environment for Cutting‐Edge Anti‐Counterfeiting

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Recently, chalcogenides with layered structures exhibit promising applications in the fields of information chaos processing and compilation remodeling, yet facile synthesis their microcrystals multi‐temporal multi‐modal luminescence remains a major challenge. Herein, competitive phase transition to generate orderly NaYS 2 is achieved by lattice reconstruction introduction S 2− occupying unique anionic site non‐vacuum sulfur‐rich environment, revealing crucial role transitions regulating material structure properties. Simultaneous photoinduced luminescent chromism photo‐stimulated are attained introducing Pr 3+ . Interestingly, broadband long‐wavelength visible afterglow emission 4f 1 5d cluster state reversible temporary change upconversion from orange green narrowband occurs under continuous 980 nm excitation, which attributed ordered polarization YS 6 layer injection defects. Furthermore, integrating long‐lived down‐conversion relatively short‐lived up‐conversion ‐doped , multilevel dynamic optical anti‐counterfeiting platform constructed based on transient long luminescence. This work implements 2D structure, providing new model tunable space‐time resolved for spatiotemporal optoelectronic multiplexing, applicable large‐capacity encryption, data storage, biosensing.

Язык: Английский

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Self-recoverable broadband near infrared mechanoluminescence from BaGa12O19:Cr3+ by multi-site occupation strategy

Materials Horizons, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Near infrared mechanoluminescence (NIR-ML) materials have attracted the attention of researchers due to their unique advantages, such as high resistance bright-field interference and higher penetration depth into biological tissues. However, reported NIR-ML are mainly rare-ion-activated narrow-band emitters. In this work, we report a material BaGa12O19:Cr3+ by solid state reaction method. Broad NIR ML (650-1000 nm) is observed at lower force loads (12 N), which based on Cr3+ ion's multi-lattice site occupation. After heat treatment 573 K for 20 min, still maintains 84.4% its intensity. Furthermore, intensity also significantly improved after UV pre-irradiation. Due defective piezoelectric photonic effect, has great self-recoverable properties even in absence sunlight irradiation. Finally, rate reached 66.97% tissues, suggests potential prospects biostress detection towards bio-imaging applications.

Язык: Английский

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Defect‐Assisted Dual‐Channel Optical Storage Material with Photochromism and Concealed Persistent Luminescence

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Abstract Optical information storage technology offers several advantages, including cost‐effectiveness, multidimensional storage, and rewritable capability. Consequently, it has become increasingly popular for optical media. Herein, a novel material Na 2 CaGe O 6 :Bi 3+ (NCGO:Bi ) is developed using non‐equivalent substitution strategy, which exhibits photochromic (PC) ultraviolet persistent luminescence (UV PersL) properties. NCGO:Bi demonstrates excellent white‐to‐brown PC performance under 254 nm light irradiation. The brown phosphor can be effectively bleached 425 or thermal stimulation, demonstrating reversibility over multiple cycles. Additionally, the displays UV PersL characteristics. representative sample NCGO:0.001Bi with duration time exceeding 10 h after excitation, peaking at 358 nm. Simultaneously, due to electrons captured by deep traps released via low‐energy also photostimulated Specifically, oxygen vacancies (V are identified primarily responsible observed phenomena X‐ray photoelectron spectroscopy (XPS) electron paramagnetic resonance (EPR) analyses. Overall, this work indicates that combination of light‐induced in single potential designing advanced luminescent materials application storage.

Язык: Английский

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Trace Bi3+ Doped Single-phase Ca3WO6 Phosphor with Tunable Cool-to-Warm White Light Emission

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Flexible Optical Fiber Stress/Temperature Dual‐Mode Sensing Based on CaZnOS:Nd,Er

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Abstract Mechanoluminescence (ML) and upconversion luminescence (UCL) materials exhibit significant potential in advanced optical sensing applications. However, single‐function luminescent often fail to meet the increased complexity precision demands of modern application scenarios. Here, flexible fiber based on ML UCL dual‐mode is demonstrated Ca/SrZnOS: Nd 3+ , Er which can be integrated into stress temperature devices. After 4200 cycles 2 N load, intensity remaines at ≈67% its initial value. Additionally, such device has a sensitivity 1.423% K −1 273.15 K, with detection accuracy 1.1990 °C. The maintained excellent cycling stability over broad range (0–80 °C), as evidenced by unchanged FIR values after 10 cycles. demonstrates applications remote monitoring, particularly high‐temperature, high‐pressure, or hazardous environments, where transmission ensures both safety accuracy.

Язык: Английский

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