Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158351 - 158351
Published: Dec. 10, 2024
Language: Английский
Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 331 - 331
Published: Jan. 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.
Language: Английский
Citations
0
Nanoscale, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 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.
Language: Английский
Citations
0
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 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.
Language: Английский
Citations
0
The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: 129(9), P. 4715 - 4723
Published: Feb. 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.
Language: Английский
Citations
0
Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180133 - 180133
Published: March 1, 2025
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 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.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 7, 2024
Abstract Mechanoluminescence (ML), which generates an optical response to external mechanical stimuli, shows promise for high‐end stress sensing, flexible optoelectronic skin, dynamic visualization, and anti‐counterfeiting applications. Near‐infrared (NIR) light possesses the advantages of high tissue penetration capability can be absorbed by certain organic molecules, thus NIR‐ML materials have potential applications in biomechanics imaging, nondestructive composition analysis, etc. However, their practical are limited emission wavelengths bandwidths materials. In this study, a series double perovskites A 2 MSbO 6 :Cr 3+ (A = Sr, Ba; M Ga, Sc) is reported with self‐recoverable emissions. By modulating composition, ML coverage tuned from NIR‐I NIR‐II (700 nm over 1200 nm), adjusted full width at half maximum 163 nm. addition, under ultrasonic stimulation, these emitted NIR light, Sr ScSbO penetrating 5 mm beef tissue. This study expands library sources spectral range, thereby promoting new
Language: Английский
Citations
3
Nanomaterials, Journal Year: 2024, Volume and Issue: 14(15), P. 1279 - 1279
Published: July 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
Language: Английский
Citations
2
Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 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.
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157876 - 157876
Published: Nov. 1, 2024
Language: Английский
Citations
0