Optical Materials最新文献

Pure white emission full thermally activated delayed fluorescence organic light emitting diode with a supplementary emission layer 带辅助发射层的纯白发射全热激活延迟荧光有机发光二极管

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-22 DOI: 10.1016/j.optmat.2024.116154

引用次数: 0

Effect of annealing on optoelectronic properties of β-Ni(OH)2 nanoparticles for flexible heterojunction 退火对用于柔性异质结的β-Ni(OH)2 纳米粒子光电特性的影响

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-21 DOI: 10.1016/j.optmat.2024.116143

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Impact of B2O3/Co3O4 substitution on structure, physical, optical characteristics and photon attenuation capacity of borosilicate glasses B2O3/Co3O4 取代对硼硅玻璃的结构、物理、光学特性和光子衰减能力的影响

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-21 DOI: 10.1016/j.optmat.2024.116151

{"title":"Impact of B2O3/Co3O4 substitution on structure, physical, optical characteristics and photon attenuation capacity of borosilicate glasses","authors":"","doi":"10.1016/j.optmat.2024.116151","DOIUrl":"10.1016/j.optmat.2024.116151","url":null,"abstract":"<div><div>The impact of substitution of B2O3/Co3O4 in borosilicate glasses on their optical, structural, and physical characteristics as well as their ability to attenuate γ-rays was examined. Using the traditional melt quenching process, glass samples with the chemical formula (45-X)B2O3+15SiO2+ 20BaF2+20Na2O + XCo3O4, where X equals 0.0, 0.5, 1.0, 1.5, and 2.0 mol%. The prepared samples were coded as Co-0.0 - Co-2.0. XRD measurements revealed the non-crystalline character of the Co-X samples. The molar volume (Vm) decreased from 31.19 cm3/mol to 31.08 cm3/mol, although the density (ρ) increased from 2.81 g/cm3 to 2.94 g/cm3. When comparing Co-0.0 and Co-2.0, the direct optical band gap (<math><mrow><msubsup><mi>E</mi><mi>g</mi><mrow><mi>D</mi><mi>i</mi><mi>r</mi><mi>e</mi><mi>c</mi><mi>t</mi></mrow></msubsup></mrow></math>) values reduced from 4.32 eV to 3.77 eV, while the indirect optical band gap (<math><mrow><msubsup><mi>E</mi><mi>g</mi><mrow><mi>I</mi><mi>n</mi><mi>d</mi><mi>i</mi><mi>r</mi><mi>e</mi><mi>c</mi><mi>t</mi></mrow></msubsup></mrow></math>) decreased from 3.93 eV to 3.44 eV. The Co-X glasses' Urbach's energy (EU) ranged from 0.297 eV to 0.248 eV. As the ratio of Co2+ ions rose, the optical dielectric constants of Co-X glasses, ε1 (actual part) and ε2 (imaginary portion) were improved. The linear (μ) and mass (μm) attenuation coefficients and effective atomic number (Zef) were followed the order: Co-2.0 > Co-1.5 > Co-1.0 > Co-0.5 > Co-0.0. The created Co-2.0 glass, which has the maximum amount of cobalt (III) oxide, has the lowest mean free path (MFP) and half/tenth value layers (H/TVL). The examined Co-X glasses can be employed for optical and γ-ray shielding purposes, as confirmed by the results.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315201","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}

引用次数: 0

Photoconvertible markers for study individual myoblast migration into the macrophage's colony 用于研究个别肌母细胞向巨噬细胞集群迁移的光电转换标记物

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-20 DOI: 10.1016/j.optmat.2024.116148

{"title":"Photoconvertible markers for study individual myoblast migration into the macrophage's colony","authors":"","doi":"10.1016/j.optmat.2024.116148","DOIUrl":"10.1016/j.optmat.2024.116148","url":null,"abstract":"<div><div>The success of myoblasts transplantation for regeneration in ischemic heart disease is largely determined by their interactions with resident macrophages. Studying their complex, contradictory, and poorly understood interactions requires the development of effective and reliable approaches for labeling and tracking myoblasts. Here, we present a useful approach for studying myoblast migration into macrophage colonies using cell-internalizable thermally treated polyelectrolyte microcapsules containing Rhodamine B (average size is approximately 3.2 ± 0.8 μm). The presented capsules exhibited fluorescence photoconversion properties, allowing for individual fluorescence coding of myoblast cells based on the number of converted and unconverted microcapsules when several capsules were internalized simultaneously. More than 70 % of C2C12 cells internalized the capsules (74 % of which contained more than two). The metabolic activity did not decrease to below 80 %, and proliferation and mobility did not change significantly. The initial cell density during the incubation with the capsules had a significant effect on the uptake efficiency. We tracked the migration of individually labeled myoblasts and their daughter cells into a macrophage colony (Raw 264.7) over 96 h. The marked cells purposefully moved with other myoblasts towards the macrophage colony, while the macrophages did not shorten the distance, despite their ability to migrate. This proposed approach may provide valuable insights for future research into the role and interaction of macrophages and myoblasts in cardiac muscle repair and regeneration.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311123","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}

引用次数: 0

Fiber temperature sensor based on dual-wavelength emitting Mg0.388Al2.408O4: Mn2+/Mn4+ phosphors for real-time temperature monitoring 基于双波长发射 Mg0.388Al2.408O4：Mn2+/Mn4+ 荧光粉的光纤温度传感器，用于实时温度监测

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116112

{"title":"Fiber temperature sensor based on dual-wavelength emitting Mg0.388Al2.408O4: Mn2+/Mn4+ phosphors for real-time temperature monitoring","authors":"","doi":"10.1016/j.optmat.2024.116112","DOIUrl":"10.1016/j.optmat.2024.116112","url":null,"abstract":"<div><div>Single doped Mg0.388Al2O3.408O4 phosphor was prepared and multivalent Mn ion (Mn2+ and Mn4+) emission was achieved in a single host. The structure, morphology, and luminescence characteristics of Mn ions in Mg0.388Al2O3.408O4 were discussed in detail, especially the temperature dependent emission characteristics of Mn ions. Based on the fluorescence intensity ratio (FIR) of Mn2+ versus Mn4+ and the decay lifetime of Mn4+ emission as the temperature readout, a dual-mode optical temperature-sensing mechanism was proposed and studied in the temperature range of 293–473 K. The maximum relative sensitivities (Sr) are derived as 2.83 % K−1 (at 373 K based on FIR) and 3.40 % K−1 (at 473 K based on decay lifetime), respectively. The temperature sensing characteristics of Mg0.388Al2.408O4: Mn2+/Mn4+ powders in a full fiber system were studied, which can provide thermal-sensitive emissions at dual-wavelengths for stable ratiometric temperature sensing with good precision and repeatability. The constructed all fiber temperature sensing system has been applied in the on-line monitoring of CPU temperature.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315203","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}

引用次数: 0

Organic UWB metamaterial absorber with angle insensitive based on flexible frequency selective surface 基于柔性频率选择表面的角度不敏感有机超宽带超材料吸收器

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116121

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Tunable emission and energy transfer of Tb3+/Eu3+ co-doped single-phase Sr2MgSi2O7 glass-ceramics Tb3+/Eu3+ 共掺单相 Sr2MgSi2O7 玻璃陶瓷的可调谐发射和能量转移

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116145

{"title":"Tunable emission and energy transfer of Tb3+/Eu3+ co-doped single-phase Sr2MgSi2O7 glass-ceramics","authors":"","doi":"10.1016/j.optmat.2024.116145","DOIUrl":"10.1016/j.optmat.2024.116145","url":null,"abstract":"<div><div>In this work, the Tb3+/Eu3+ co-doped 30SrO–10MgO–50SiO2–5TiO2–5B2O3–1Tb2O3-xEu2O3 (x = 0–2.5 mol% at 0.5 intervals) glasses were prepared by the melt-quenching method, and the single-phase Sr2MgSi2O7 glass-ceramics were obtained after heat treatment. The structural and fluorescence performance of the glasses and glass-ceramics were examined using DSC, XRD, SEM, FTIR, and photoluminescence spectra, and the energy transfer process between Tb3+ and Eu3+ was systematically investigated. With increasing Eu2O3 contents, the thermal stability of the glasses is enhanced and the density of both the glasses and the glass-ceramics rises. The XRD and SEM results reveal the precipitation of the irregular spherical Sr2MgSi2O7 microcrystals with a grain size roughly within 0.5–1 μm. Under 376 nm excitation, the overall emission intensity and lifetime of Eu3+ ions increase with increasing Eu2O3 contents, and the energy transfer efficiency reaches 58.74 % from 31.07 %. According to the Dexter model, the energy transfer process between the Tb3+ and Eu3+ is dominated by the quadrupole-quadrupole interactions. By varying the Eu2O3 contents, all the glass-ceramics exhibit higher color purity (82.06–96.27 %), and their chromaticity coordinates shift from yellowish green towards reddish orange, which is potentially promising for w-LEDs.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311125","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}

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Optimizing catalytic performance of Ag2O/Na0.5Bi0.5TiO3 heterojunction by the piezo-phototronic coupling effect 利用压光耦合效应优化 Ag2O/Na0.5Bi0.5TiO3 异质结的催化性能

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116136

{"title":"Optimizing catalytic performance of Ag2O/Na0.5Bi0.5TiO3 heterojunction by the piezo-phototronic coupling effect","authors":"","doi":"10.1016/j.optmat.2024.116136","DOIUrl":"10.1016/j.optmat.2024.116136","url":null,"abstract":"<div><div>The constructing of heterojunction piezo-photocatalysts has been regarded as a promising strategy in environmental remediation. Herein, a novel Ag2O/Na0.5Bi0.5TiO3 (Ag2O/NBT) p-n heterojunction is designed by using a facile method, inducing the remarkable enhancement of photocatalytic performance by piezoelectric effect under ultrasonic vibration. The Ag2O/NBT heterojunction can degrade 99 % Rhodamine B (RhB) within 30 min when exposed to light irradiation and ultrasonic vibration simultaneously, with a high reaction rate constant of 0.140 min−1, which is 4.5 times and 17.5 times that of individual photocatalysis (0.031 min−1) and piezocatalysis (0.008 min−1), respectively. Moreover, the Ag2O/NBT heterojunction exhibits excellent stability and reusability after five cycles. The improved piezo-photocatalytic performance can be attributed to the formation of p-n heterojunction and the generation of built-in electric field, which makes a high separation of photogenerated carriers. Finally, a possible piezo-photocatalytic mechanism for removal RhB was proposed based on the radical trapping experiment. It is expected that the results can provide valuable information for the further investigations of Ag2O/NBT heterojunction as a potential piezo-photocatalyst in the environmental remediation.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311122","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}

引用次数: 0

Wide spectral range optical characterization of niobium pentoxide (Nb2O5) films by universal dispersion model 利用通用色散模型对五氧化二铌（Nb2O5）薄膜进行宽光谱范围光学表征

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116133

{"title":"Wide spectral range optical characterization of niobium pentoxide (Nb2O5) films by universal dispersion model","authors":"","doi":"10.1016/j.optmat.2024.116133","DOIUrl":"10.1016/j.optmat.2024.116133","url":null,"abstract":"<div><div>In this work, the optical properties of niobium pentoxide (<math><mrow><msub><mrow><mtext>Nb</mtext></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mtext>O</mtext></mrow><mrow><mn>5</mn></mrow></msub></mrow></math>) films were extensively studied across a wide spectral range using heterogeneous data-processing methods, combining ellipsometric and spectrophotometric measurements for five samples with thicknesses between 20 and 250 nm. This study primarily determined the optical constants of <math><mrow><msub><mrow><mtext>Nb</mtext></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mtext>O</mtext></mrow><mrow><mn>5</mn></mrow></msub></mrow></math> from the far infrared to the vacuum ultraviolet, presenting these constants as dispersion parameters using the universal dispersion model to describe valence electron excitations in ultraviolet region as well as phonon vibrations in infrared region. These comprehensive and reliable data across such a broad spectral range are unprecedented. Secondly, presented optical characterization proofs that <math><mrow><msub><mrow><mtext>Nb</mtext></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mtext>O</mtext></mrow><mrow><mn>5</mn></mrow></msub></mrow></math> films can be grown without defects such as surface roughness, porosity, or inhomogeneity. This fact, together with its high refractive index, makes <math><mrow><msub><mrow><mtext>Nb</mtext></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mtext>O</mtext></mrow><mrow><mn>5</mn></mrow></msub></mrow></math> a promising material for optical applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315202","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}

引用次数: 0

Tunable broadband luminescence of the novel Sn2+ doped oxyfluoride glass and glass-ceramics for W-LEDs 用于 W-LED 的新型掺杂 Sn2+ 氧氟化物玻璃和玻璃陶瓷的可调宽带发光特性

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-09-19 DOI: 10.1016/j.optmat.2024.116146

{"title":"Tunable broadband luminescence of the novel Sn2+ doped oxyfluoride glass and glass-ceramics for W-LEDs","authors":"","doi":"10.1016/j.optmat.2024.116146","DOIUrl":"10.1016/j.optmat.2024.116146","url":null,"abstract":"<div><div>The demand for white-light luminescent materials for the white-light-emitting diodes (W-LEDs) field has been growing in modern life. In this work, a series of Sn2+ and Mn2+ ions co-doped highly transparent white-light emitting oxyfluoride glasses (precursor glass, PG) and Sr2LuF7 glass-ceramics (GC) were successfully prepared by the melt-quenching technique. Their luminescent and structural properties were investigated by the transmission spectra, excitation and emission spectra at different temperatures (300-500 K), luminescent decay curves, XRD, and TEM characterizations. Upon excitation with ultraviolet (UV) light, tunable broadband blue-white light emissions of Sn2+ were obtained by adjusting the concentration of Sn2+ ions. A conspicuous energy transfer process from Sn2+ to Mn2+ was observed in Sn2+/Mn2+ co-doped samples. Tunable broadband luminescence between blue-white light and orange-red light regions and nearly pink-white light emission was realized by varying Mn2+ concentration. Furthermore, compared to PG samples, the emissions were enhanced in GC samples due to the crystallization of Sr2LuF7 nanocrystals. Excellent thermal stability was also performed in these Sn2+ doped PG and GC samples with a recovering value of 96 % and 98.8 %, respectively. Simultaneously, Sn2+ doped PG and GC samples also own good optical thermal sensitivities with an SA value of 2.28 % and 2.47 % K-1, respectively. Our results indicate that these Sn2+/Mn2+ co-doped PG and GC may serve as tunable light sources under UV excitation and have prospects on the ratiometric optical thermometry fields.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311056","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}

引用次数: 0