Stress Distributions and Luminescent Responses of Mechanoluminescent Cylinders with Various Sizes and Loading Paths

Materials, Год журнала: 2025, Номер 18(2), С. 331 - 331

Опубликована: Янв. 13, 2025

Mechanoluminescent (ML) materials emit light by trapping and releasing charge carriers under mechanical stress. However, previous studies do not fully reveal the relationship between emitting intensity stress, thereby affecting accuracy of stress measurement. This study addresses this gap systematically investigating ML cylinders with various sizes loading paths using theoretical analysis simulations, focusing on maximum contact equivalent distribution, strain energy density at point In combination experiments, behavior optical responses normal compressive forces that luminescence is closely related to cylinder size path, effectively reflecting distributions in objects different complex conditions. Particularly, within elastic range ideal conditions where lateral ignored, nearly equal The linearly intensity, while proportional square root intensity. work promotes application structural health monitoring visualization.

Язык: Английский

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Recent advances in multimodal mechanoluminescent sensors enabled by nanostructure design

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Multifunctional coupling and signal decoupling achieved through nanostructure supramolecule design, enable multimodal mechanoluminescent materials to play an increasingly important role in interdisciplinary applications cutting-edge fields.

Язык: Английский

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Designing Ultra‐Narrow‐Band Red Phosphor via Oxygen Vacancy Engineering for Transparent Display Application

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Narrow‐band red phosphors have been crucial in enabling energy‐efficient and wide color gamut display technologies. Developing novel with narrower FWHM suitable positions is still an urgent demand. Herein, a nanorod‐shaped Nb 2 O 5 :Pr 3+ phosphor, featuring single ultra‐narrow‐band emission at 612 nm of only 19 nm, reported. The narrow‐band associated oxygen vacancies, which can influence the electron–hole recombination energy. Besides, intensity PL spectra presents anti‐thermal properties achieves unexpected 12.5‐fold enhancement from 80 to 280 K. Detailed structural analyses, optical measurements, DFT calculation are used investigate abnormal photophysical processes. It canbe found that V O1 has lowest E form 0.70 eV electron localization area around Pr atom enlarges biggest distortion as appears. energy transfer vacancies luminescent center accounts for large enhancement. At last, fabricated transparent screen transparency 50% high purity (98%), LED device shows gamut. These findings advance understanding relationship between inspiring more design phoshors applications.

Язык: Английский

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Rate-Dependent Mechanoluminescence in SrZn₂S₂O:Mn²⁺ for Time-Characterized Optoelectronic Devices

The Journal of Physical Chemistry C, Год журнала: 2025, Номер 129(9), С. 4715 - 4723

Опубликована: Фев. 26, 2025

Self-recoverable mechanoluminescence (ML) has demonstrated broad applications in mechanosensory optoelectronic devices based on pressure- and rate-dependent emission performance. However, understanding the coupled effect of pressure rate ML kinetics remains elusive, limiting design time-characterized ML-based devices. Here, we show that SrZn2S2O:Mn2+ exhibits an oscillatory behavior with a series sharp peaks time-dependent curve under rapid compression from 0.1 to 11.0 GPa at critical rates ∼1.7–4.7 GPa/s, distinct decompression which presents peaks. The X-ray diffraction measurement shows SrZn2S2O matrix is stable up ∼14.6 above it transforms new structure. Photoluminescence spectroscopy changes monotonically intensity wavelength range 0.1–8.2 GPa. By combining experimental results piezoelectric detrapping model, suggest may result multiple-cyclic processes piezoelectrically induced excitation luminescent activators, indicating intrinsic response compression. be conducive temporal characteristics.

Язык: Английский

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Non-Destructive Charged Mechanoluminescence in Transparent Glass-Ceramics

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180133 - 180133

Опубликована: Март 1, 2025

Язык: Английский

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Defects in Inorganic Mechanoluminescent Phosphors: Insights and Impacts

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 27, 2025

Abstract Mechanoluminescence (ML), the light emission of materials in response to mechanical stimuli, has gained significant attention various fields due situ and real‐time “force light” converting ability. Defects dominate ML process, either for accommodating carriers or as sites carrier recombination. However, comprehensive discussions on ML‐based defects are rarely reported. The review opens with an exploration recent progress research, highlighting central role ML. A range defect types commonly exist firstly introduced, which aims highlight profound influences Subsequently reported defect‐dominated phosphors researched elucidate intricate relationship between specific their influence performance, shedding underlying luminescence mechanisms. Afterward, experimental techniques characterization also demonstrate how work computational modeling is confirmed act a powerful tool investigating atomistic mechanisms defect‐related processes enabling precise control materials. In conclusion, this mini‐review underscores centrality materials, offering integrated perspective potential guide future research endeavors.

Язык: Английский

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Multi-modal emissions from trinary active centers in piezoelectric semiconductor materials for intelligent sensing of stress and temperature

Journal of Materiomics, Год журнала: 2025, Номер unknown, С. 101073 - 101073

Опубликована: Май 1, 2025

Язык: Английский

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Achieving Tunable Mechanoluminescence in CaZnOS:Tb3+, Sm3+ for Multicolor Stress Sensing

Nanomaterials, Год журнала: 2024, Номер 14(15), С. 1279 - 1279

Опубликована: Июль 30, 2024

Mechanoluminescent (ML) materials can exhibit visible-to-near-infrared mechanoluminescence when responding to the fracture or deformation of a solid under mechanical stimulation. Transforming energy into light demonstrates promising applications in terms visual sensing. In this work, we synthesized phosphor CaZnOS:Tb

Язык: Английский

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Synergistic Mechanoluminescence and Mechanochromism Via Triboelectrification‐Induced Eu³⁺/Eu²⁺ Redox Shuttle

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

Опубликована: Сен. 28, 2024

Abstract Materials capable of simultaneously achieving both mechanoluminescence (ML) and luminescent mechanochromism (L‐MC) hold great promise in smart stimuli‐responsive applications. However, single‐phase single‐doped inorganic ML materials with pronounced L‐MC behavior are exceptionally rare because their single center. This study investigates a unique phenomenon series novel triboelectrification‐induced materials, Sr 5 (PO 4 ) 3 X:Eu 3+ (X = F, Cl, Br). These exhibit the situ ionic valence state transition excitation behaviors Eu ‐Eu 2+ ion pair by utilizing inherent properties triboelectrification cause significant differences emission spectra during photoluminescence process. The redox reactions ions process influenced synergistic action shuttle (suitable potential), (driving force), vacancies (catalysts). Hence, this presents direct experimental evidence for underlying mechanism advances development applications materials.

Язык: Английский

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Visualization of strain rate based on mechanoluminescence tailing

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157876 - 157876

Опубликована: Ноя. 1, 2024

Язык: Английский

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