The Experts below are selected from a list of 37590 Experts worldwide ranked by ideXlab platform
Feng Wang - One of the best experts on this subject based on the ideXlab platform.
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Solution Concentration and refractive index sensing based on polymer microfiber knot resonator
Applied Physics Express, 2014Co-Authors: Huaqing Yu, Feng Wang, Liangbin Xiong, Zhihong Chen, Qianguang Li, Xunong Yi, Yu Ding, Hao Lv, Yaoming DingAbstract:We report a simple and highly sensitive Solution Concentration and refractive index (RI) sensor based on a microfiber knot resonator (MKR). The sensor was assembled using a flexible poly(trimethylene terephthalate) microfiber of 1.3 ?m diameter. The resonance peak shifts due to the variation of the Concentration of the ambient medium surrounding the MKR were detected. In the mass Concentration range of 0.6?1.2%, the Concentration sensitivity and reSolution of the sensor are 1.7 nm/% and 1.2 ? 10?3%, respectively. The highest measured sensitivity of the sensor is about 95.5 nm/RIU (RI unit) and the RI detection limit is about 2.1 ? 10?5 in the RI range from 1.39 to 1.41.
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Effect of Solution Concentration on surface morphology and photocatalytic activity of ZnO thin films synthesized by hydrothermal methods
Journal of Materials Science: Materials in Electronics, 2013Co-Authors: Jianguo Lv, Fengjiao Shang, Feng Wang, Zhitao Zhou, Wanbing Gong, Zhenfa Zi, Xiaoshuang Chen, Gang HeAbstract:ZnO thin films were synthesized via hydrothermal method on silicon substrate at various Solution Concentrations. The thin films were characterized by X-ray diffraction, field-emission scanning electron microscope and UV–Vis spectrophotometer. The results show that the thin films are polycrystalline with wurtzite hexagonal structure. The Tc values of (101) surface of the thin film increase from 0.929 to 1.840 at first, and then decrease to 0.779 with increasing Solution Concentration. The preferential orientation along the (101) crystal surface can be controlled by changing the Solution Concentration. Solution Concentration has a significant effect on surface morphology of the thin films. The optical band gap of the thin films decreases, when the Solution Concentration of zinc nitrate hexahydrate increases from 0.01 to 0.06 mol/L and then increases when the Solution Concentration of zinc nitrate hexahydrate further increases to 0.08 mol/L. Photocatalytic activity of the thin films on degradation of methyl orange under UV light irradiation was studied in detail. The ZnO thin film with many cracks prepared from 0.01 mol/L shows the higher photocatalytic activity but the tower-like ZnO thin film prepared from 0.08 mol/L reveals the lower photocatalytic activity. Therefore, the photocatalytic activity of the thin films are mainly relate to surface morphology and crystallographic orientation.
Ren Jian-min - One of the best experts on this subject based on the ideXlab platform.
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Influence of fertilizer Solution Concentration on water transport characteristics under film hole single-line interference infiltration
Agricultural Research in the Arid Areas, 2020Co-Authors: Ren Jian-minAbstract:Based on lab experiment under film hole single-line interference infiltration with different fertilizer Solution Concentration,cumulative infiltration volume,wetting front transport distance and the distribution of soil water content with different fertilizer Solution Concentration were studied.The laws of cumulative infiltration volume and transport distance of wetting front increased with the increase of Solution Concentration were presented,mathematical models for cumulative infiltration volume under film hole infiltration and wetting front transport distance were developed,the models were verified by measured data,wetting front transport distance in the same time and the soil water content at the same depth increased with the increase of Solution Concentration.
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Study on the Influence of Fertilizer Solution Concentration on Wetting Body Characteristics under Film Hole Single-line Interference Infiltration
China Rural Water and Hydropower, 2020Co-Authors: Ren Jian-minAbstract:Based on lab experiment,transport characteristics of wetting front with different fertilizer Solution Concentration under single-line interference infiltration of film hole irrigation were researched.Models for transport distance of wetting front and infiltration time were established,the law of transport distance of wetting front increased with the increased Solution Concentration were presented.Models for transport distance of wetting front of film hole center and interference center by rinsing wetting front transport parameters and Solution Concentration were established,the calculation of the models were verified by observed data.Exponential function model for interference time and fertilizer Solution Concentration of single-line interference were developed.The results provided scientific foundation for further study of film hole irrigation.
Xuan Zhao - One of the best experts on this subject based on the ideXlab platform.
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An inductive salt Solution Concentration sensor using a planar coil based on a PQCR-L circuit
Sensors and Actuators A: Physical, 2017Co-Authors: Xing Ding, Xinpeng Chen, Xiangdong Chen, Ning Li, Xuan ZhaoAbstract:An inductive salt Solution Concentration sensor is proposed in this paper. A planar sensing coil with a thin insulation covering layer, which was set at the bottom of the testing container for sensing purposes, was used as the sensor probe. The operating principle underlying this work is based on detection of tiny changes in inductance of the sensing coil due to Solution Concentration variation. This variation was detected and converted to a frequency signal by a well-designed inductance-to-frequency switching circuit. A sensor prototype was developed to further demonstrate the feasibility of this approach. Tests for cupric sulfate, sodium chloride, and potassium sulfate aqueous Solutions with various Concentrations were performed. The sensor showed a responding sensitivity of 50 Hz/mM for cupric sulfate Solution test. Input-output characteristics revealed that the sensor has a good linearity. Due to its high quality factor, the sensor showed a good stability of the output frequency. In addition, rapid response and good reproducibility were observed in the experiments. The proposed sensor had the advantages of low cost, noncontact measurement, and easy manufacture.
K Raeissi - One of the best experts on this subject based on the ideXlab platform.
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effect of Solution Concentration on semiconducting properties of passive films formed on austenitic stainless steels
Corrosion Science, 2010Co-Authors: Arash Fattahalhosseini, M A Golozar, A Saatchi, K RaeissiAbstract:Abstract The semiconductor properties of passive films formed on AISI 316L in three acidic Solutions were studied by employing Mott–Schottky analysis in conjunction with the point defect model (PDM). Based on PDM, the key parameters for passive film growth are the diffusivity and density of the defects within the film. The results indicated that donor densities are in the range 1–4 × 1021 cm−3 and increased with Solution Concentration. By assuming that the donors are oxygen ion vacancies and/or cation interstitials, the diffusion coefficient of the donors in three acidic Solutions are calculated to be approximately 1–5 × 10−16 cm2/s.
Gang He - One of the best experts on this subject based on the ideXlab platform.
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Effect of Solution Concentration on surface morphology and photocatalytic activity of ZnO thin films synthesized by hydrothermal methods
Journal of Materials Science: Materials in Electronics, 2013Co-Authors: Jianguo Lv, Fengjiao Shang, Feng Wang, Zhitao Zhou, Wanbing Gong, Zhenfa Zi, Xiaoshuang Chen, Gang HeAbstract:ZnO thin films were synthesized via hydrothermal method on silicon substrate at various Solution Concentrations. The thin films were characterized by X-ray diffraction, field-emission scanning electron microscope and UV–Vis spectrophotometer. The results show that the thin films are polycrystalline with wurtzite hexagonal structure. The Tc values of (101) surface of the thin film increase from 0.929 to 1.840 at first, and then decrease to 0.779 with increasing Solution Concentration. The preferential orientation along the (101) crystal surface can be controlled by changing the Solution Concentration. Solution Concentration has a significant effect on surface morphology of the thin films. The optical band gap of the thin films decreases, when the Solution Concentration of zinc nitrate hexahydrate increases from 0.01 to 0.06 mol/L and then increases when the Solution Concentration of zinc nitrate hexahydrate further increases to 0.08 mol/L. Photocatalytic activity of the thin films on degradation of methyl orange under UV light irradiation was studied in detail. The ZnO thin film with many cracks prepared from 0.01 mol/L shows the higher photocatalytic activity but the tower-like ZnO thin film prepared from 0.08 mol/L reveals the lower photocatalytic activity. Therefore, the photocatalytic activity of the thin films are mainly relate to surface morphology and crystallographic orientation.
