JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2014
·Vol. 98
·期 1
·223-228
·
IF 2.428
Fupo He,Fanwen Yang,Jixiang Zhu,Ye Peng,Xiumei Tian,Xiaoming Chen
The coral, whose main composition is aragonite-type calcium carbonate, has been widely used as bone substitute in clinic. However, the study on calcium carbonate bioceramic has not been largely reported due to difficulty in sintering calcium carbonate which is liable to evidently decompose at low temperature. In this study, a novel calcium carbonate composite ceramic was fabricated by sintering fast at a low temperature. A degradable, biocompatible phosphate-based glass (PG) which grew liquid at a low temperature was added as sintering agent in the sintering process. The sintering schedule was explored by thermal analysis. The phase composition, microstructure, compressive strength, and biocompatibility of calcium carbonate composite ceramics were evaluated. The results revealed that the optimum holding time at the sintering temperature was 20 min. The obtained calcium carbonate composite ceramics did not produce calcium oxide but new compounds according to phase analysis. The compressive strength of calcium carbonate composite ceramics correspondingly increased with growing addition of PG ranging from 10 to 50 wt%. The cell proliferation on the calcium carbonate composite ceramic was not compromised but augmented compared to the neat calcium carbonate ceramic without adding PG as sintering agent. The novel calcium carbonate composite ceramic is a promising bone substitute for bone defects.
研究领域:
生物材料学
·
骨科医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2023
·Vol. 25
·期 4
·1-11
·
IF 2.5
Fu Lili,Gao Yongjin,Zheng Ruilin,Feng Qidong,Chen Ming,Qin Tianjie,Liu Chunxiao,Wei Wei
The encapsulation of CsPbBr 3 nanocrystals (NCs) in oxide glass can effectively avoid contact of the external environment with the halide perovskite. However, the effects of hydroxyl and oxygen on NCs cannot be completely excluded because of the nature of oxide glass itself. Here, we proposed a new solution to solve these problems by using fluorophosphate (FP) glass as the embedding matrix. The composition (Br concentration) and heat treatment conditions (temperature and time) of the glass matrix were designed and optimized to improve the optical properties of CsPbBr 3 NCs. The results showed that highly pure green light with an emission peak of 534 nm and a full-width at half-maximum (FWHM) of approximately 19 nm was achieved using CsPbBr 3 NCs@glass and a light-emitting diode (LED)/laser diode (LD). The Commission Internationale de l'Eclairage (CIE) coordinates of the two devices were (0.243, 0.723) and (0.239, 0.739), with very high color purities of 96.6% and 97.3%, respectively. The photoluminescence quantum yields (PLQYs) of the samples excited at 365 nm and 450 nm wavelengths were 34.54% and 38.85%, respectively. Additionally, the chemical stability of CsPbBr 3 NCs was significantly improved by the encapsulation in FP glass, retaining 88% of the original PL intensity after 30 days of storage in deionized water. This work provides a new choice to improve the stability of a halide perovskite in a matrix.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 3
·2677-2681
·
IF 1.338
Yang Jing,Liu Huiwen,Yu Honglin,Zou Xiaoxuan,Jing Bo,Dai Wenli
The rheological behavior of a novel, binary organic–inorganic hybrid consisting of an ultra-low Tg tin fluorophosphate glass (Pglass) and polycarbonate (PC) was investigated using oscillatory rheometry. It was found that the complex viscosity of the hybrid showed Pglass content
dependence. Under low Pglass content (10∼30%), the complex viscosity of the hybrid was lower than that of pure PC. While the complex viscosity was dramatically increased and higher than that of pure PC with the content of Pglass above 30%. This phenomenon was particularly remarkable at
low frequencies. Besides, with the addition of Pglass the hybrid material exhibited shear-thinning behavior and the shear-thinning characteristics became more obvious with the enhancement of the Pglass content, indicating the presence of nonlinear chemical and physical interactions between
the hybrid components. Differential scanning calorimetry (DSC) measurements revealed that increasing the content of Pglass caused a decrease of the glass transition temperature (Tg) of the hybrids, suggesting that Pglass was acting as a macromolecular plasticizer for the PC. The microstructure
of the Pglass in the hybrid material was characterized by scanning electron microscopy (SEM). The results showed that the Pglass were dispersed as micro- and nano-bead in the continuous phase of PC and the Pglass appeared aggregation partly with the increase of the Pglass content. This contribution
was anticipated to be a guideline for the processing of this promising new class of hybrid materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Chenkai Zhu,Wuxiang Zhang,Zhenzong Shao,Zixun Wang,Baoning Chang,Xilun Ding,Yang Yang
Articular cartilage with limited ability of regeneration remains a grand challenge in the field of tissue engineering. Poly(vinyl alcohol) (PVA) hydrogel with low friction coefficient have been regarded as prior candidate for cartilage substitute, whereas lack of structure performance and bioactivity limited their application. Phosphate glass fiber (PGF) with outstanding mechanical performance and nature of biodegradability presents potential capability to improve mechanical stability of hydrogel and chondrocyte metabolism as well as cell recruitment. Herein, we describe a novel PGF-PVA composites hydrogel incorporated with continuous PGF. The presence of stiff PGF not only improves the mechanical properties of hydrogel with maximum tensile strength of 12.44 MPa and Young's modulus of 68.35 MPa, but also endows the hydrogel molecular structure with the increase of crystallinity and thermal stability via formation of crosslinking points. More importantly, the PVA hydrogel matrix exhibits efficient ions exchange behavior to control ions concentration during PGF degradation, resulting in more suitable metabolic environment for chondrocyte proliferation and induction with enhanced recruitment. Therefore, it is believed that this work provides a kind of fiber reinforced hydrogel material promising excellent properties for cartilage repair.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 22
·6728-6743
·
IF 6.641
Xuyang Zhang,Ruili Zhang,Lili Hu,Jinjun Ren
A series of 16BaF2–(84 − x)NaPO3–xYF3–yErF3 (x = 0, 12, 24, 36, and 48 mol%; y = 0.1, 0.5, and 1 mol%) glasses were prepared via the conventional melt-quenching method and subsequently heated to synthesize glass ceramics containing Er3+-doped Na5Y9F32 crystals. The structures of glasses and glass ceramics were characterized by multiple advanced one- and two-dimensional solid-state magic angle spinning nuclear magnetic resonance (MAS NMR) techniques. At the atomic level, multiple phosphorus species Qn (n = 0, 1, and 2) were resolved. Here, the value n denotes the number of P–O–P bonds, which can be quantified by 2D J-resolved spectroscopy. The connectivity between F− ions and cations was detected by the rotational echo double resonance (REDOR) and the J-coupling based heteronuclear multiple quantum coherence (HMQC) method. With the increase of YF3 content, the phosphate network depolymerized gradually. 31P and 19F MAS spectra, as well as 23Na {31P} and 23Na {19F} REDOR results, consistently proved that Y3+ ions, replacing partial Ba2+ and Na+ ions, aggregated around phosphorus tetrahedrons [PO4]3−, whereas partial Ba2+ and Na+ ions moved away from [PO4]3− to bond with F− ions and formed Y–F⋯Na and Ba–F⋯Na linkages. All cations could exist as oxygen and fluorine complex ligand units M(OxFy), besides single oxygen ligand units M(Ox+y), where M represents cations in glasses. When YF3 content reached 48% by mole, micro-regions enriched in Y–F⋯Na linkages were formed, which promoted the crystallization. 31P MAS spectra indicated that the crystallization of Na5Y9F32 crystals has not affected the local structure of phosphorus species. Intensive upconversion luminescence can be observed in the fluoro-phosphate glass ceramics containing Er3+:Na5Y9F32 crystals. On the basis of these complementary evidences from solid-state NMR experiments and luminescence spectra, a novel structure evolution model during crystallization is developed.
研究领域:
材料科学
·
光物理学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 9
·4921-4927
·
IF 2.936
Yajie Wang,Yue Yu,Ya Zou,Liyan Zhang,Lili Hu,Danping Chen
The structure of tin fluorophosphate glasses and their low melting point properties have attracted a great deal of attention recently, but their own luminescent features have not been well studied. Photoluminescence properties of ultra-low glass transition temperature (<200 °C) tin fluorophosphate glasses with varying SnO/SnF2 molar ratios at room temperature have been investigated in the present study. Broad photoluminescence in the range from 400 nm to 700 nm, originating from the S1–S0 and T1–S0 transitions of Sn2+ with the ultra-high concentration (70 mol%), was obtained. And the SnF2–SnO–P2O5 glasses exhibited a fast decay lifetime of 2 ns. Both wavelengths of the excitation peak and emission peak depend on the local structure of Sn2+, which is influenced by different SnO/SnF2 molar ratios. White light can be generated by appropriately altering the SnO/SnF2 molar ratios in the SnF2–SnO–P2O5 glasses. The ultra-low glass transition temperature SnF2–SnO–P2O5 glasses without rare earth elements are a possible candidate for future high white light emission.
研究领域:
材料科学
·
光学
·
光子学
✓ 已验证
DOI
PubMed
高影响因子
AIP Advances
·
2015
·Vol. 5
·期 2
·
IF 1.524
Tang G. W.,Qian Q.,Peng K. L.,Wen X.,Zhou G. X.,Sun M.,Chen X. D.,Yang Z. M.
Phosphate glass-clad optical fibers containing selenium (Se) semiconductor core were fabricated using a molten core method. The cores were found to be amorphous as evidenced by X-ray diffraction and corroborated by Micro-Raman spectrum. Elemental analysis across the core/clad interface suggests that there is some diffusion of about 3 wt % oxygen in the core region. Phosphate glass-clad crystalline selenium core optical fibers were obtained by a postdrawing annealing process. A two-cm-long crystalline selenium semiconductor core optical fibers, electrically contacted to external circuitry through the fiber end facets, exhibit a three times change in conductivity between dark and illuminated states. Such crystalline selenium semiconductor core optical fibers have promising utility in optical switch and photoconductivity of optical fiber array.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yucheng Li,Kuan Ren,Shuai Cheng,Yahua Hu,Xuechun Yang,Shutong Hao,Shenye Liu,Naixin Li,Zhan Xu,He Feng,Xing Zhang,Tao Xu,Xiaoyan Zhou,Yuji Wu,Zhenghua Yang,Pin Yang,Jianjun Dong,Yulong Li,Huiyue Wei,Xiaoshi Peng,Xiangming Liu,Zanyang Guan,Zhiwen Yang,Jin Li,Yunsong Dong,Dong Yang,Tao Yi,Jiamin Yang,Yongkun Ding,Zhixiang Sun,Xiaolin Liu,Mu Gu,Jingtai Zhao,Guang Yang,Qianli Li
The ultrastable encrypted storage of X-ray image with quantitative and ultrahigh-spatial resolution are crucial for a wide range of applications in radiation imaging, and it can be achieved by using the radio-photoluminescence (RPL) material, Ag-doped phosphate glass (Ag-PG), which was fabricated via the melt-quenching method. Under X-ray irradiation, Ag-PG produces a luminescence center, obvious 650 nm emission peak, which can be repeatedly excited by ultraviolet light without intensity attenuation. Quantitative X-ray image storage was realized based on the linear relationship between RPL intensity and X-ray irradiation time. X-ray image with a submicron spatial resolution of 0.7 µm was achieved, which could be stably stored without attenuation for more than 300 days. This submicron level X-ray image can be written into the Ag-PG as an encrypted information, and can only be visualized by an ultraviolet light. Additionally, heat treatment (400 °C for 2 h) could eliminate the influence of X-ray radiation on the Ag-PG, and restore the state of the Ag-PG before X-ray irradiation, which allows the recyclability and reusability of the Ag-PG. This research is of great significance for promoting the encrypted storage of X-ray images based on Ag-PG or other RPL materials.
研究领域:
材料科学
·
医学影像学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·Vol. 44
·期 2
·1731-1736
·
IF 2.986
Jingbo Yu,Qian Zhang,Yi Gu,Anxian Lu
In this study, phosphate glasses embedded with Fe 2 O 3 quantum dots were prepared via a conventional melt quenching technology with further heat treatment. The effect of Fe 2 O 3 content on the structural, optical and magneto-optical properties was investigated. The results showed that the addition of Fe 2 O 3 had no obvious influence on the structure units that built up the host glass and the amorphous nature of glass. In the glass matrix , the existence of Fe 2 O 3 quantum dots was confirmed by high resolution transmission electron microscope . Meanwhile, optical study clearly demonstrated a red shift in optical cut-off wavelength resulted from the size quantization effect. The highest Verdet constant (22.33°/T-cm) was measured for the glass containing 1 mol% Fe 2 O 3 , which was ~ 7 times higher than that of the glass matrix. As the increment of Fe 2 O 3 contents, a phase evolution of Fe 2 O 3 quantum dots from amorphous phase to γ-Fe 2 O 3 phase was recorded due to the Ostwald Ripening effect. Interestingly, a concentration quenching phenomenon in Verdet constant was observed along with the phase evolution of Fe 2 O 3 quantum dots. When the content of Fe 2 O 3 is up to 2 mol%, the glass exhibited paramagnetism with the Verdet constant of − 2.833°/T-cm. This finding can provide a new idea for the development of quantum dot embedded magneto-optical glass.
研究领域:
材料科学
·
磁光材料
·
纳米材料
·
无机非金属材料
·
光学玻璃
·
凝聚态物理
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 26
·47599-47610
·
IF 5.6
Weijie Zhu,Weichao Wang
The rapid expansion of data-intensive technologies such as 5G, AI, and cloud computing is pushing optical communication systems to their limits, necessitating the development of advanced materials to extend bandwidth into the L- and U-bands. Fluoro-sulfo-phosphate (FSP) glasses, owing to their multi-anionic compositions and tunable network structures, offer a promising platform for next-generation broadband fiber amplifiers. In this work, a mixed-cation approach employing K + and Ba 2+ is employed to manipulate the local structural environment and enhance glass-forming ability, lifetime (8.7–9.22 ms for Er-doped, ∼10 ms for Er 3 + /Yb 3+ co-doped), emission cross-section (0.59-0.70 × 10 − 20 cm 2 ), energy transfer efficiency (∼85 %), and thermal quenching resistance. Despite their similar sizes and electronegativities, K + and Ba 2+ exhibit contrasting field strengths and polarizabilities, enabling a controlled balance between network connectivity and local disorder. Thermodynamic modeling and experimental results confirm that the introduction of mixed cations significantly broadens the glass-forming region. The addition of AlF 3 further strengthens the network, allowing for the preparation of stable K/Ba-FSP glasses with improved mechanical, thermal, and chemical properties. Spectroscopic analysis reveals a substantial enhancement in L-band emission efficiency and gain characteristics, with performance improvements ranging from 30 % to 150 % over conventional glass hosts. These findings position K/Ba-FSP glasses as a robust and high-performance candidate material system for broadband rare-earth-doped fiber amplifiers and lasers.
研究领域:
材料科学
·
光学工程
·
无机非金属材料
·
光通信
·
激光技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 10
·5664-5677
·
IF 3.502
Yao Ji,Yongbao Xiao,Shujing Huang,Weichao Wang
Fluoro-sulfo-phosphate (FPS) glass is of current interest as potential material for laser application due to its good glass-forming ability, thermal, and chemical stability as well as the complicated local environment for incorporated species. Herein, the physical and luminescent properties of Er 3+ and Yb 3+ /Er 3+ -doped FPS glasses vs S/F ratio are investigated comprehensively. The low melting temperature (750°C) leads to fewer ingredients evaporation and easier operation. The sulfate addition depolymerizes the structure of FPS glasses, leading to either monotonic or nonmonotonic variations of physical properties, while no deterioration in thermal and limited one in chemical stability is caused. The addition of sulfate also modifies the local structure around optical active species and thus, leading to higher emission cross section (1.52 × 10 −20 cm 2 ), effective linewidth (68.4 nm), figure of merit (5.61 × 10 −23 s cm 2 ), gain bandwidth (102.44 × 10 −27 cm 3 ), and energy-transfer microparameters (51.87 × 10 −39 cm 6 /s), implying high possibility to serve as 1.5 μm laser application.
研究领域:
材料科学
·
光学
·
激光物理
✓ 已验证
DOI
高影响因子
Biomaterials Advances
·
2023
·
IF 0
Jiafei Gu,Xiaoling Liu,Ping Cui,Xiaosu Yi
For the treatment of tumor-related bone defects resulting from surgical resection, simultaneous eradication of residual tumor cells and repair of bone defects represent a challenge. To date, photothermal therapy based on photothermal materials is used to remove residual tumor cells under near infrared light. However, most of photothermal materials have no function for bone repair, and even if combined with bioactive materials to enhance osteogenesis, they still cause potential harm to the body due to inability to degrade or poor degradability. Herein, multifunctional bioactive glasses (PGFe5-1100, PGCu5-1100) based on phosphate glass doped with transition metal elements were prepared for photothermal ablation, bone regeneration, and controllable degradation. The glasses exhibited excellent photothermal effect, which was derived from the electron in-band transition after light absorption due to energy level splitting of doped transition metal element and the subsequent electron nonradiative relaxation. The photothermal performance can be controlled by laser power density, element doping content and glass melting temperature. Moreover, the hyperthermia induced by the glasses can effectively kill tumor cells in vitro. In addition, the glasses degraded over time, and the released P, Ca, Na, Fe could promote bone cell proliferation and osteogenic differentiation. Therefore, these results successfully demonstrated that transition metal element-doped phosphate glasses have multifunctional abilities of tumor elimination, bone regeneration, and spontaneous degradation simultaneously with better biosecurity and bioactivity, which is believed to pave the way for the design of novel biomaterials for osteosarcoma treatment.
研究领域:
生物材料
·
癌症治疗
·
组织工程
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
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