IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2024
·
IF 5.6
Qi Wang,Hao-Yue Wang,Nuerguli Kari
Rapid and incredibly sensitive analyte detection is crucial in a variety of settings, including medical diagnostics. However, conventional surface plasmon resonance (SPR) sensors cannot effectively solve the issue of low sensitivity when assaying trace analytes. In this work, the rare Earth oxide Lu2O3 is first introduced to modify fiber optic SPR sensor. By utilizing the inherent advantages of Lu2O3, including high dielectric constant, high breakdown field strength, and high photoelectric conversion efficiency, the electric field around the sensor is effectively increased and high sensitivity detection is achieved. Experimental results show sensitivity of the sensor modified with Lu2O3 nanomaterial reaches 12133.78 nm/RIU in the interval of 1.3614–1.3756. The hexagonal boron nitride (h-BN) is subsequently introduced to further enhance electric field using the charge transfer mechanism. The sensitivity reaches 15065.92 nm/RIU, 3.96 times better than conventional U-shaped fiber SPR sensors. The sensor is compact designed with high sensitivity. There is significant potential for improving the sensitivity aspect of analyte detection.
研究领域:
生物医学工程
·
光学传感
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Gen Li,Yaqi Wang,Min Tao,Siqi Chen,Bozhi Zhou,Quan Li,Xin Li,Heming Deng,Hao Huang,Haoshuang Gu,Yuebin Li
Developing efficient strategies to fabricate planar photoluminescence scintillators is of great importance to explore X-ray detectors with new platform. Rare-earth (RE) doped Lu 2 O 3 thin films are successfully fabricated by mild aqueous phase electrochemical deposition on ITO/glass substrates with low-temperature post-annealing treatment. The as-prepared Lu 2 O 3 :RE 3+ (RE = Eu, Tb and Tm) thin films exhibit steerable thickness, high transparency in the visible-NIR range, and low transmittance at UV band mainly due to the oxygen-metal (O 2- -RE 3+ ) charge transfer processes and the 4f-4f transitions of the RE 3+ . The Lu 2 O 3 :RE 3+ thin films emit intense red, green and blue (RGB) photoluminescence, which mainly correspond to the 5 D 0 - 7 F 2 transition of Eu 3+ , 5 D 4 - 7 F 5 transition of Tb 3+ and 1 G 4 - 3 H 6 transition of Tm 3+ respectively. Moreover, the transparent Lu 2 O 3 :RE 3+ thin films also exhibit high sensitivity and linearity luminescence to the X-ray stimulation in a dose rate from 30 to 160 mGy s −1 . This rapid and energy-saving synthesis show high efficiency to fabricate rare-earth doped thin-film with a tunable optical performance for optoelectrical application in the fields of solar light concentrators, agricultural light conversion thin films, biosensors , photodetectors and especially the X-ray detectors.
研究领域:
材料科学
·
光学工程
·
医学影像
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2019
·
IF 6.35
Huan Gao,Junfang Zhang,Ying Liu,Wenwen Tu,Tianxiang Wei,Zhihui Dai
Development of sensitive detection methods for microRNAs has realistic application value for early clinical analysis and accurate diagnosis. In this study, a triple-helix molecular switch electrochemiluminescence resonance energy transfer (ECL-RET) nanoamplifier was designed to construct an electrochemiluminescence (ECL) biosensor for microRNA determination. The newly synthesized S-doped Lu2O3, which shows a 3 times better ECL performance than Lu2O3, was chosen as the donor in this ECL-RET system. Accordingly, Ag2S quantum dots (QDs) were used as the matched acceptor. They exhibited overlapping spectra and efficient energy transfer between each other. Furthermore, using a triple-helix switch structure with an improved quenching effect for signal amplification and a nano-DNA walker transformational system as a powerful method for target amplification, a supernanoamplifier was achieved. As a consequence, the proposed ECL biosensor for microRNA-141 detection exhibited good analytical performance with a low detection limit (16 aM). The sensor not only led to the development of a novel ECL-RET pair but also provided a strong nanoamplifier for biosensing platform construction, which may offer some new considerations regarding material design, signal amplification, and show promising application value in biomedical and clinical diagnosis.
研究领域:
生物传感技术
·
纳米材料科学
·
临床诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
·
2016
·
IF 2.041
Yinyan Li,Shiqing Xu
Uniform and well-defined Lu 2 O 3 and Lu 2 O 3 :Eu 3+ microarchitectures have been successfully synthesized via a green and facile ionic liquid-based hydrothermal method followed by a subsequent calcination process. Novel 3D micro-rodbundles and 1D microrods of Lu 2 O 3 and Lu 2 O 3 :Eu 3+ were controllably obtained through this method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence spectra were used to characterize the micromaterials. The proposed formation mechanisms have been investigated on the basis of a series of SEM studies of the products obtained at different hydrothermal durations. The results indicated that hydrothermal temperature and the ionic liquid-tetrabutylammonium hydroxide were two key factors for the formation as well as the morphology control of the Lu 2 O 3 and Lu 2 O 3 :Eu 3+ microarchitectures.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 2
·025001
·
IF 1.62
Zeyang Luo,Huan Wang,Yuxin Ma,Guodong Zhang,Duanting Yan,Xinyu Bai,Dejun Wang,Runru Liu
In this study, a promising electrolyte material Bi0.76Lu0.16Ti0.08O1.5+δ (abbreviated as '8T16LSB') with high oxygen ion conductivity was obtained by co-doping with Lu2O3 and TiO2 into Bi2O3. The phase composition, microstructure, and conductivity of TLSB ceramics were respectively investigated by x-ray diffraction, scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). XRD results exhibited that the sintered TLSB ceramics with an unchanged total doping concentration of 24 mol.% existed as a cubic fluorite structure. SEM results showed that the TLSB pellets were relatively dense. The relationship between temperature and conductivity showed that the 8T16LSB ceramic exhibited the highest conductivity of 0.56 S cm−1 at 700 °C, which was higher than the value of 0.37 S cm−1 for the representative single-doping Er0.4Bi1.6O3 (abbreviated as '20ESB'). The results certified that the electrochemical performance of Bi2O3 was promoted by the co-dopant of Lu3+and Ti4+.
研究领域:
材料科学
·
无机化学
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2016
·
IF 2.139
Xiangyang Chen,Guangxin Xiang,Fengtao Chai,Zhijun Zhang,Siqi Shi,Fangfang Xu,Jingtai Zhao
Europium-doped Lutetium oxide (Lu 2 O 3 : Eu 3 + ) polycrystalline films have been successfully fabricated on cleaned silicon (100) substrates by routine and alternate spin-coating techniques. X-ray diffraction (XRD), photoluminescence (PL) spectra, field emission electron scanning microscope (FE-SEM) are employed to characterize the as-fabricated films. The SEM observation reveals that the thickness and porosity of the film fabricated by the alternate spin-coating are superior to that by routine spin-coating, i.e. the thickness and porosity increase 95% and reduce 26%, respectively, resulting in 72% enhancement of the emission intensity. According to theoretical calculation and crystallographic analysis, the dominated 5 D 0 - 7 F 2 emission of Eu 3 + can be assigned to the main non-inversion site occupancy.
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Jie Fu,Ying Zhang,Zhibiao Ma,Linghan Bai,Ruyu Fan,Wenlong Xu,Mathieu Allix,Cécile Genevois,Emmanuel Veron,Yafeng Yang,Hui Wang,Jianqiang Li
Transparent Lu 3 Al 5 O 12 (LuAG) ceramics have become very promising phosphor matrix materials due to their high doping concentration and luminous efficiency, thermal conductivity and thermal stability. However, LuAG transparent ceramics prepared by traditional powder sintering method are facing several problems, such as time-consuming and energy-consuming, complex preparation process, high quality of raw material powders and large crystalline grain size. Here we report facile elaboration of transparent LuAG-Al 2 O 3 two-phase nanocrystalline ceramics through pressureless crystallization (1000 °C, 2 h) of 72 mol.% Al 2 O 3 -28 mol.% Lu 2 O 3 (ALu28) bulk glasses combined with the crystallization kinetics analysis. The results of the crystallization kinetics analysis show that the ALu28 bulk glasses have a low activation energy (<750 kJ mol −1 ) and a crystallization mechanism of three-dimensional crystal growth mode accompanied by volume nucleation. The resulting LuAG-Al 2 O 3 ceramics with nanosized grains and dense three-dimensional network nanostructures present good transmittance (80.6 %@780 nm) and excellent mechanical properties (hardness is 24 GPa).
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
ACS Applied Nano Materials
·
2024
·
IF 5.3
Renjie Jin,Jinsong Liu,Shiwei Chen,Hongde Wang,Changsheng Niu,Xuehua Zhang,Chao Wu,Haizheng Hu,Kai Chen,Daoyou Guo,Shunli Wang
Solar-blind ultraviolet (UV) photodetectors play a critical role in ultraviolet communication and monitoring, effectively reducing false alarm rates and improving the accuracy of detection systems across various settings, which has garnered significant attention. Due to its exceptional solar-blind photon absorption coefficient, extremely stable structure, and ultrawide bandgap (4.5–4.9 eV), Ga2O3 has recently been identified as a desirable material for solar-blind UV photodetectors. Heterojunctions can separate photogenerated electron–hole pairs and their absorption edges can be controlled by selecting semiconductors with appropriate bandgaps, making them an important technology for light detection. In this work, a self-powered solar-blind UV photodetector has been fabricated using a mechanically separated β-Ga2O3/Lu2O3 core–shell microwire heterostructure. Our device demonstrates excellent solar-blind UV discriminability with self-powered photodetection, the device exhibits a responsivity of 38.8 mA/W, a detectivity of 1.22 × 1012 Jones, a switching ratio of 1.43 × 103, and a decay rate under UV irradiation of 62 ms, benefiting from both photovoltaic and photoconductive effects. Due to the high dielectric constant of Lu2O3 thin films at the nanoscale, enables more effective modulation of internal electric fields within heterojunction structures, thereby enhancing the response speed and sensitivity of photodetectors. The application of self-powered photodetectors in solar-blind communication systems has achieved promising results, which provides a viable strategy for Ga2O3-based high-performance self-powered photodetectors.
研究领域:
光电子学
·
半导体材料
·
光电探测器
·
紫外通信
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Yuexin Wang,Yanhua Song,Xiuqing Zhou,Keyan Zheng,Ye Sheng,Pingchuan Ma,Bowen Zhang,Meiqi Chang,Haifeng Zou
Uniform Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O cauliflower-like microspheres have been synthesized via a direct precipitation method at room temperature, without any templates and catalysts. The solvent-dependent morphological evolution and the formation mechanism of the Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O cauliflower-like microspheres were investigated in detail. Furthermore, Eu 3+ /Tb 3+ -doped Lu 2 O 3 inherited their parents' morphology were obtained through a direct annealing process. The Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O:Eu 3+ , Lu 2 O 3 :Eu 3+ exhibit strong red emission corresponding to the 5 D 0 - 7 F j transition of the Eu 3+ ions. The Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O:Tb 3+ , Lu 2 O 3 :Tb 3+ exhibit strong green emission corresponding to the 5 D 4 - 7 F j transition of the Tb 3+ ions under UV light excitation. The samples may have potential applications in the fields, such as light-emitting phosphors, advanced flat panel displays, or biological labeling.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2021
·
IF 6.057
Huan Gao,Junfang Zhang,Xuan Wei,Qinshu Zhu,Tianxiang Wei
Developing efficient and sensitive cytosensing method has great significance for the detection of low abundant circulating tumor cells (CTCs). Electrochemiluminescence (ECL) biosensor, as an attractive analytical tool, has shown a great potential in sensitive cell counting. Its detection efficiency is strongly dependent on the electrochemiluminescent materials, whose property is related to its morphology and surface vacancies. Herein, the ultrathin Lu 2 O 3 –S nanosheets contain abundant oxygen vacancies were newly synthesized. Its special two-dimensional (2D) structure morphology and surface vacancy endowed it intensified and stable ECL emission. The possible mechanism was deduced from experiments and discussed. Then, through integrating with a DNA device cycle-amplification system plus signal conversion pretreatment, we constructed a crossed enhanced ECL cytosensing platform. In this system, the target cells were transformed into programmable sequences, which could be next coupled with DNA device cycle-amplification on the modified electrode surface. Using Ag 2 S quantum dots as the energy acceptor toward Lu 2 O 3 –S donor, and CCRF-CEM cells (CEM) as the model CTCs, an enhanced ECL cytosensing platform was proposed, displaying good analytical performance for acute lymphoblastic leukemia cancer cell detection. The ECL signal responded proportionately on the CEM cells concentration in a wide range of 5 × 10 to 1 × 10 6 cells/mL, and a low detection limit of 10 cells/mL was obtained. This work provided an alternative way to design high-performance ECL luminophores, and also would be an effective solution for CTCs counting.
研究领域:
生物传感器
·
纳米技术
·
癌症诊断
·
分析化学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）