JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 9
·5013-5027
·
IF 3.502
Yongbao Xiao,Yao Ji,Yichen Ye,Shujing Huang,Weichao Wang
Alkali-earth-metaphosphate-based fluoro-sulfo-phosphate M(PO 3 ) 2 –AlF 3 –MSO 4 (MPFS, M = Ca, Sr, Ba) glasses have been developed via simultaneously incorporating fluoride and sulfate into metaphosphate glass. Their glass-forming regions were efficiently determined under the guidance of thermodynamic calculation method. The physical and structural properties of BaPFS glass were investigated in detail. Furthermore, near-infrared spectroscopic properties of Er 3+ -doped BaPFS (Er–BaPFS) glass were studied. Physical parameters, such as Abbe's number ν d (55-75) and nonlinear refractive index n 2 (1.17-1.86 × 10 −13 esu), of BaPFS glass are strongly depended on P/F/S ratio. The structure of BaPFS glass gradually depolymerizes and tends to become multianionic when Ba(PO 3 ) 2 is substituted by AlF 3 and BaSO 4 . Anion-substitution strategy effectively modulates the property and structure of glass, providing a scheme to derive glass materials. In addition, enhanced emission at ~1.5 μm has been observed from Er–BaPFS glass along with large emission cross section (5.0-5.5 × 10 −21 cm 2 ) and long lifetime (6.7-7.3 ms), resulting in large figure of merit (3.46-3.84 × 10 −23 cm 2 ·s), which is a promising candidate for solid-state laser.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Xiaoman Li,Ruijin Fan,Pengfei Zhai,Xinyu Liu,Huijun Liu,Shitong Xu,Rongfei Wei,Hai Guo
The demands for white-light-emitting materials are becoming more and more rigorous. In this work, a novel kind of Sn 2+ /Mn 2+ doped phosphate aluminum calcium glass was fabricated by a traditional melt-quenching technique. Broadband excitation and emission of Sn 2+ ions were detected in Sn 2+ single-doped glass samples. By the modulation of excitation wavelength, tunable broadband cyan-blue light emissions of Sn 2+ were also realized. Combined with the red light emitting of Mn 2+ ion, a nearly white light with a good chromaticity coordinate (0.339, 0.298) and a relatively low correlated color temperature (CCT) of 5107 K were obtained in Sn 2+ /Mn 2+ codoped glasses due to the energy transfer process from Sn 2+ to Mn 2+ ions. In addition, after two cycles of heating and cooling treatment, the emission intensity of Sn 2+ doped glass sample remained 97.9% of the initial emission intensity at 300 K. All of these results reveal that these Sn 2+ /Mn 2+ doped aluminum calcium phosphate glasses have good resistance to thermal impacts and have prospects in white-light-emitting diodes (W-LEDs) fields.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 2
·270
·
IF 4.329
Lizhe He,Xiaoling Liu,Chris Rudd
Composites of biodegradable phosphate glass fiber and polylactic acid (PGF/PLA) show potential for bone tissue engineering scaffolds, due to their ability to release Ca, P, and Mg during degradation, thus promoting the bone repair. Nevertheless, glass degradation tends to acidify the surrounding aqueous environment, which may adversely affect the viability and bone-forming activities of osteoblasts. In this work, MgO was investigated as a neutralizing agent. Porous network-phase gyroid scaffolds were additive-manufactured using four different materials: PLA, MgO/PLA, PGF/PLA, and (MgO + PGF)/PLA. The addition of PGF enhanced compressive properties of scaffolds, and the resultant scaffolds were comparably strong and stiff with human trabecular bone. While the degradation of PGF/PLA composite induced considerable acidity in degradation media and intensified the degradation of PGF in return, the degradation media of (MgO + PGF)/PLA maintained a neutral pH close to a physiological environment. The experiment results indicated the possible mechanism of MgO as the neutralizing agent: the local acidity was buffered as the MgO reacted with the acidic degradation products thereby inhibiting the degradation of PGF from being intensified in an acidic environment. The (MgO + PGF)/PLA composite scaffold appears to be a candidate for bone tissue engineering.
研究领域:
生物材料学
·
医学工程
·
骨科
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 12
·6847-6859
·
IF 3.502
Yan Sun,Fei Yu,Meisong Liao,Juping Ma,Xin Wang,Dongbing He,Weiqing Gao,Jonathan Knight,Lili Hu
In this work, we systematically study the spectroscopic properties of Tb 3+ /Dy 3+ co-doped phosphate glasses in the visible spectral region and explore the sensitization role of Dy 3+ in the enhancement of visible fluorescence of Tb 3+ ions. Judd-Ofelt parameters Ω 2 and Ω 4 /Ω 6 of the phosphate glass as host for Tb 3+ are calculated as 21.60 × 10 -20 cm 2 and 0.73, respectively, based on the measured spectral absorption. Multiple energy transfer (ET) routes from Dy 3+ to Tb 3+ and their efficiencies are characterized, and the enhanced fluorescence properties of Tb 3+ are investigated, including the emission spectral strength and the spontaneous emission lifetime as functions of Dy 3+ doping concentration. The efficient nonradiative ET processes between Dy 3+ and Tb 3+ allow a moderate concentration level of Tb 3+ to achieve favorably stronger spectral absorption at blue and ultraviolet wavelengths. Tb 3+ /Dy 3+ co-doped phosphate glass shows promising potential for phosphors and lasing operation at visible wavelengths.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 105
·期 8
·5167-5177
·
IF 4.186
Ruili Zhang,Delong Ma,Jianrong Wang,Yang Chen,Xun Hu
A detailed structural investigation of a series of phosphate laser glasses with composition x Bi 2 O 3 – y Al 2 O 3 –(100 − x – y )NaPO 3 ( x = 0, 10; y = 0, 5, 10, 15, 20) has been conducted using solid-state nuclear magnetic resonance (NMR) techniques and X-ray photoelectron spectroscopy (XPS). 31 P MAS NMR spectroscopy demonstrates that the addition of Bi 2 O 3 and Al 2 O 3 leads to the depolymerization of the phosphorus chain in the process of Q 2 → Q 1 → Q 0 . The various phosphorus species (Q n , n = 0, 1, 2) are identified by 31 P single pulse, 31 P{ 27 Al} rotational echo adiabatic passage double resonance, 31 P{ 27 Al} J-coupling-based heteronuclear multiple-quantum coherence, and 1D refocused INADEQUATE experiments. The results of 23 Na{ 31 P}, 31 P{ 23 Na}, 27 Al{ 31 P} rotational echo double resonance, and XPS consistently confirm that Na + , Al 3+ , and Bi 3+ ions are all bound by phosphorus tetrahedron [PO 4 ] 3− . No bond is formed between these glass modifiers. Based on the complementary evidence from previous experiments, comprehensive local structure models are developed for these Bi 2 O 3 –Al 2 O 3 –NaPO 3 glasses.
研究领域:
材料科学
·
固体物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2021
·
IF 3.531
Shuhang Tian,Yipeng Lun,Yongsheng Sun,Dongdan Chen,Guowu Tang,Qi Qian,Zhongmin Yang
In this work, strong yellow emission was obtained in Dy 3+ doped multi-component phosphate glass due to its high asymmetry and covalency of the local field and high phonon energy. The internal quantum efficiency was measured to be 39.27% and the figure of merit was calculated to be 210.53 pm 2 × μs. What is more, silicate-clad Dy 3+ doped multi-component phosphate core glass fiber was successfully drawn by using a rod-in-tube method, which has a strong fluorescence emission in yellow spectra band. The Dy 3+ doping concentration is 2.6 wt.%, which is much larger than that of Dy 3+ doped (0.2 wt.%) ZBLAN fiber. These results suggest that the silicate-clad Dy 3+ doped multi-component phosphate glass fibers are potential host matrices for yellow laser.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Feng Shi,Lili Hu,Yun Cui,Jinjun Ren
Glasses in the xLa2O3-yAl2O3-(100 – x – y)NaPO3 system were synthesized by a melt quenching method, where 0 ≤ x ≤ 7.5, y = 0 and x = 5, 5 ≤ y ≤ 15. The structures were characterized by advanced multinuclei solid-state nuclear magnetic resonance spectroscopy (SSNMR) and X-ray photoelectron spectroscopy (XPS). 31P MAS NMR spectroscopy indicates that the glass Q2 structure is depolymerized by La2O3 and Al2O3, forming multiple QxAln and QyLan phosphorus species, where n, x, and y represent the number of P–O–P, P–O–Al, and P–O–La bonds, respectively. The various phosphorus species were identified by the J-coupling effect based one and two-dimensional (1D and 2D) experiments such as 2D J-resolved, 1D refocused INADEQUATE and 1D 31P{27Al} J-coupling heteronuclear multiple quantum coherence (HMQC). La is used as a mimic to simulate the local structure of the luminescent rare earth ions. 139La wideband uniform rate smooth truncation quadrupolar Carr–Purcell–Meiboom–Gill (WURST-QCPMG) spectra show that the coordination number of La is dominantly nine, and some La atoms transfer to lower coordination with the addition of Al2O3. La, Al, and Na atoms exclusively bond to phosphorus tetrahedron PO4, which is evidenced by the 31P/23Na, 31P/27Al double resonance NMR, XPS, and the calculation of charge balance. However, the Al/P and La/P connection methods are much different based on the calculation of charge balance and bond number. Finally, comprehensive and novel local structure models are developed for these rare earth-doped aluminum phosphate glasses.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2020
·
IF 2.929
Tongyao Zhao,Xuyang Zhang,Jinjun Ren
A series of glasses with the compositions of 10NaF-(90-x) NaPO 3 -xYF 3 ( x = 5, 10, 15 and 20 mol%) were prepared via the conventional melt-quenching method. The structures of these glasses were characterized by multiple advanced solid-state nuclear magnetic resonance (SSNMR) techniques. Multiple phosphorus species Q m nY were resolved at atomic level. Here, the value m and n denote the number of P–O–P bonds and the number of Y 3+ ion bounding to phosphorus oxygen tetrahedron, respectively, which were identified by two dimensional (2D) J -resolved spectroscopy. 19 F MAS spectra, 19 F↔ 23 Na and 19 F↔ 31 P rotational echo double resonance (REDOR) prove that F − ions are involved into the glass networks through Y-F•••Na and P-F•••Na linkages. The 31 P { 19 F} J -coupling based heteronuclear multiple quantum coherence ( J -HMQC) spectrum proves that F − ions selectively connect with Q 1 species. F − ions show significant preference to connecting with Y 3+ over P 5+ .
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 5
·1079
·
IF 3.2
Baiyi Li,Guangdong Zhou
In this study, various phosphate glasses (PGs) within the CaO-Na2O-P2O5and SiO2-CaO-Na2O-P2O5systems were synthesized using both conventional and microwave melt-quenching techniques. The physical, thermal, and structural properties of these phosphate glasses, as well as their dissolution behaviors under varying temperatures and solvent conditions, were thoroughly examined. Additionally, the influence of scale inhibitor dosage, temperature, and pH on the rate of scale inhibition was assessed using a static scale inhibition test. The morphology and crystal types of the precipitates were characterized using Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) analysis. The findings indicate that the PG structure predominantly consists of Q2structural units, with a minor presence of Q1units. The dissolution rate of PG escalates with an increase in temperature and a decrease in pH. Conversely, the scale inhibition efficiency diminishes with rising temperature and pH. Optimal scale inhibition efficiency, reaching up to 95.4%, was observed at a pH of 7 and a temperature of 50 °C. Under the influence of the PG scale inhibitor, the primary crystal form of CaCO3was altered from calcite to vaterite.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2019
·
IF 2.6
Haijian Li,Jianhua Yi,Zhao Qin,Zhihua Sun,Yi Xu,Changjian Wang,Fengqi Zhao,Yucheng Hao,Xiaofeng Liang
The effect of rare earth elements (Y, La, Nd, Sm, and Gd) on the structures, thermal expansion, chemical stability and crystallization behavior of phosphate-based glasses were characterized by using powder X-ray diffraction (PXRD), Scanning Electron Microscope (SEM), X-Ray Fluorescence (XRF), Diffuse reflectance UV–Visible spectra, thermal expansion coefficient, inductively coupled plasma mass spectrometry (ICP-MS) and Differential scanning calorimetry (DSC). UV–Vis spectra not only exhibit the absorption peaks of rare earth cations but also reveal the reduction of band gap (E g ) with increasing the cationic field strength (CFS) of rare earth elements, further establishing the change of non-bridging oxygen (NBOs) density in the glass structures. It is found that there is a decrease in thermal expansion coefficient (α) with increasing the CFS of rare earth, and the study shows a strong correlation between α values and NBOs in the rare earth phosphate glass systems. The chemical durability tests of glass blocks demonstrate that the normalized leach rates (NR RE ) increase with decreasing the radius of rare earth elements, and La-doped phosphate glass with high thermal expansion coefficient has good chemical durability. By a two-stage thermal treatment, a preliminary study of the crystallization mechanism for the rare earth phosphate glasses is carried out, and the major crystalline phases are identified.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Guowu Tang,Qi Qian,Xin Wen,Guanxiang Zhou,Xiaodong Chen,Min Sun,Dongdan Chen,Zhongmin Yang
For the first time to the best of our knowledge phosphate glass-clad optical fibers comprising tellurium (Te) semiconductor core have been fabricated using a molten core approach. The cores were found to be highly crystalline and phase-pure as evidenced by X-ray diffraction (XRD) and corroborated by Micro-Raman spectrum. Elemental analysis across the core/clad interface suggests that there is some diffusion of oxygen and phosphorus into the core region and, conversely, diffusion of Te into the cladding region. Unfortunately, the propagation loss of the Te core fibers was too high to measure due to the significant scattering from the grain boundaries, oxygen and phosphor precipitates. However, the larger Raman gain, infrared and terahertz transparency of tellurium over silicon and germanium should make these fibers of significant value for fiber-based mid- to long-wave infrared, terahertz waveguides and Raman-shifted infrared light sources.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Zheng Wenyan,Wang Zhuo,Chen Weilin,Zhang Mengchao,Li Hui,Yang Guang,Xu Qiang,Qiao Xvsheng,Tan Dezhi,Zhang Junjie,Qiu Jianrong,Qian Guodong,Fan Xianping
The direct laser writing (DLW) of photoluminescent metal clusters is inspiring intensive research in functional glasses. However, understanding the influence of the host structure on cluster formation and visualizing DLW-induced clusters at the atomic scale remains challenging. In this work, we develop a highly photosensitive fluorophosphate glass through fluorine incorporation. The addition of fluorine establishes a conducive environment for Ag + ions before DLW and enhances the availability of reducing agents and diffusion pathways during DLW. These advantages facilitate the formation of Ag clusters under low-energy single-pulsed DLW. Increasing laser energy results in a combination of Ag clusters and glasses defect, forming a dot + ring photoluminescent pattern. Atom probe tomography (APT), a technique capable of mapping the elemental spatial distribution and identifying clustering, is employed to gain more information on laser-induced clusters. Comparison of APT results between samples without and with DLW reveals the formation of Ag clusters after laser writing. The design concept and characterization enrich the understanding of Ag cluster behavior in glasses. This knowledge opens the possibility of rational design of clusters confined in glasses and inspires their synthesis for various applications.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）