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| 1 | Development of Zr/ZrO_2 high temperature and high pressure sensors for in-situ measuring chemical parameters of deep-sea water显示文摘In order to in situ measure chemical parameters of deep-sea water and hydrothermal fluids at midocean ridge(MOR), it is necessary to use high temperature and high pressure chemical sensors.Developing new sensors is essential to measure in-situ pH and other chemical parameters(dissolved H2, dissolved H2S) of deep-sea water and hydrothermal fluids in a wide temperature range(2℃―400℃) at MOR vents.The YSZ(Yttria Stabilized Zirconia, 9%Y2O3) ceramic-based(HgO/Hg) chemical sensors possess excellent electrochemical properties at high temperatures, which have been used to measure chemical parameters of hydrothermal fluids above 200℃.A novel Zr/ZrO2 oxidation/reduction electrode was constructed by oxidation of Zr wire in Na2CO3 melt.This Zr/ZrO2 electrode has good chemical stability while measuring pH of high-temperature aqueous solutions, combined with a Ag/AgCl reference electrode.Potentials of the Zr/ZrO2 sensor in association with a Ag/AgCl reference electrode vary linearly with pH over a wide pH range, as tested by various NaCl-HCl-H2O solutions(NaOH-NaCl-H2O for basic solutions), at temperatures in the range of 20℃―200℃.Thus, the Zr/ZrO2 sensors can be utilized in monitoring the fluids over the temperature range of 2℃―200℃.The Zr/ZrO2 electrode combined with Ag/AgCl, Ag/Ag2S, and Au electrodes has been used to measure pH and other chemical parameters(dissolved H2, dissolved H2S) of aqueous fluids from low to high temperatures and high pressures in the laboratory and to monitor those parameters of deep-sea water in South China Sea. | ZHANG XueTong, ZHANG RongHua, HU ShuMin & WANG Yong Open Research Laboratory of Geochemical Kinetics, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China | 2009 | Science China(Technological Sciences)2009，52，8： | 3 |
| 2 | Excitation Mechanism of Surface Plasmon Polaritons for Surface Plasmon Sensor With 1D Metal Grating Structure for High Refractive Index Medium显示文摘The excitation mechanism of surface plasmon polaritons(SPPs)in a surface plasmon sensor with a one-dimensional(1D)Au diffraction grating on a glass substrate is studied herein.The sensitivity of the sensor for application to a refractometer is also characterized.The SPPs are excited at the following two types of interface:one between the Au grating and the glass substrate and the other between the Au grating and the medium.The simulation data for the transmittance spectra and the transmittance mapping are consistent With the experimental data even when the refractive index of the solution medium is 1.700.Therefore,the excitation mechanism of the SPPs in a surface plasmon sensor is capable of detecting the medium(n=1.700),in which the sensor is used and clarified. | Atsushi MOTOGAITO Yusuke ITO | 2019 | Photonic Sensors2019，9，1： | 2 |
| 3 | A multi-channel chemical sensor and its application in detecting hydrothermal vents显示文摘There are well-established chemical and turbidity anomalies in the plumes occurring vicinity of hydrothermal vents, which are used to indicate their existence and locations. We here develop a small, accurate multi-channel chemical sensor to detect such anomalies which can be used in deep-sea at depths of more than 4 000 m. The design allowed five all-solid-state electrodes to be mounted on it and each (apart from one reference electrode) could be changed according to chemicals to be measured. Two experiments were conducted using the chemical sensors. The first was a shallow-sea trial which included sample measurements and in situ monitoring. pH, Eh, CO3^2- and SO4^2- electrodes were utilized to demonstrate that the chemical sensor was accurate and stable outside the laboratory. In the second experiment, the chemical sensor was integrated with pH, Eh, CO3^2- and H2S electrodes, and was used in 29 scans of the seabed along the Southwest Indian Ridge (SWIR) to detect hydrothermal vents, from which 27 sets of valid data were obtained. Hydrothermal vents were identified by analyzing the chemical anomalies, the primary judging criteria were decreasing voltages of Eh and H2S, matched by increasing voltages of pH and CO3^2- . We proposed that simultaneous detection of changes in these parameters will indicate a hydrothermal vent. Amongst the 27 valid sets of data, five potential hydrothermal vents were targeted using the proposed method. We suggest that our sensors could be widely employed by marine scientists. | Zhen Cai A J Mur Luis Jiwan Han Kui Wang Huawei Qin Ying Ye | 2019 | Acta Oceanologica Sinica2019，38，9： | 1 |
| 4 | ZrO_2/Graphene Nanocomposites Synthesized in Supercritical Fluids: Highly Efficient Chemical Sensor Material for Ethanol显示文摘ZrO2/Graphene nanocomposites are fabricated from graphene oxide by one-step, green, facile and low-cost SCCO2 method. The as-prepared nanocomposites are characterized by means of X-ray photoelectron, transmission electron microscopy and catalytic chemiluminescence measurement. The ZrO2 nanoparticles with size of several nanometers are uniformly coated on the graphene surface. The chemiluminescence characteristic to ethanol of the as-prepared nanocomposite paper is also investigated. The nanocomposite paper obtained displays high catalytic chemiluminescence sensitivity and highly selectivity to the ethanol gas. This study provides a facile, green and low-cost route to prepare nanoscopic gas sensing devices with application in safe protection, food fermentation, medical process and traffic safe. | LI Jun LI Yue ZHANG Dawei XIA Dan CHENG Hao LIU Li HUANG Yudong JIANG Zaixing | 2013 | 矿物学报2013，33，S1： | 0 |
| 5 | Temperature Dependence of Osciliating Frequency of an Electrode-Separated Piezoelectric Sensor显示文摘In this paper, the dependences of the frequeucy-temperature coefficient (df/dt) of an electrode-sepa-rated piezolectric sensor(ESPS) on desity, viscosity, permittivity and conductivity of the solution to be tested were investigated’ A comparison of the frequency -temperature coefficient between the ESPS and a conwentioal piezoelectric quartz crystal was made, In a nou-electrolyte liquid, the df/dt)walwe of the ESPS increases with the increase of viscosity, density and permittivity of the liquid There is df/dt>0 in low or high conductivity solutions, but df/dt>0 in middle conductivity solution.And two zoues where df/dt is approximately equal to zero are observed in electrolyte | 康琪 张利 冯业铭 申大忠 | 1997 | International Journal of Mining Science and Technology1997，18，1： | 0 |
| 6 | Universal Spectral Modulation Sensors:(Ⅱ)Applications | SHI Yongji (Luoyang Technology College,Luoyang 471003,CHN) | 1997 | Semiconductor Photonics and Technology1997，3，2： | 0 |
| 7 | High-Quality InSb Grown on Semi-Insulting GaAs Substrates by Metalorganic Chemical Vapor Deposition for Hall Sensor Application显示文摘High-quality InSb epilayers are grown on semi-insulting GaAs substrates by metalorganic chemical vapor deposition using an indium pre-deposition technique. The influence of Ⅴ/Ⅲ ratio and indium pre-deposition time on the surface morphology, crystalline quality and electrical properties of the InSb epilayer is systematically investigated using Nomarski microscopy, atomic force microscopy, high-resolution x-ray diffraction, Hall measurement and contactless sheet resistance measurement. It is found that a 2-μm-thick InSb epilayer grown at 450℃ with a Ⅴ/Ⅲ ratio of 5 and an indium pre-deposition time of 2.5s exhibits the optimum material quality, with a root-meansquare surface roughness of only 1.2 nm, an XRD rocking curve with full width at half maximum of 358 arcsec and a room-temperature electron mobility of 4.6 × 10~4 cm^2/V·s. These values are comparable with those grown by molecular beam epitaxy. Hall sensors are fabricated utilizing a 600-nm-thick InSb epilayer. The output Hall voltages of these sensors exceed 10 mV with the input voltage of 1 V at 9.3 mT and the electron mobility of 3.2 × 10~4 cm^2/V·s is determined, which indicates a strong potential for Hall applications. | 李欣 赵宇 熊敏 吴启花 滕 郝修军 黄勇 胡双元 朱忻 | 2019 | Chinese Physics Letters2019，36，1： | 0 |
| 8 | Quartz Crystal Microbalance Sensor Deposited with LB Films of Functional Polymers for the Detection of Phenols in Vapour Phase显示文摘IntroductionInrecentyearsanincreasingdemandforenvironmentalmonitoringhasstimulatedana-lyticalchemiststomakegreaterefortstodev... | YAN Li and ZHOU Xi chun (New Materials Plant, Central China Normal University, Wuhan, 430079 Department of Environmental Science & Natural Resource , Wuhan University, Wuhan, 430072) | 1998 | Chemical Research in Chinese Universities1998，14，4： | 0 |
| 9 | Frequency characteristic of series piezoelectric sensor and application to the determination of water in organic solvents显示文摘Theoretical consideration was proposed for the frequency response of a series piezoelectric sensor to the properties of liquid and verified experimentally. This kind of sensor has sensitive and selective frequency response to the permittivity and specific conductivity of solution with excellent stability, and was applied to the determination of micro-content of water in organic solvents. The detection limit is 0.01 g/L in dioxane. | SHEN, Da-Zhong ZHU, Wen-Hong NIE, Li-Hua YAO, Shou-Zhou New Material Research Institute, Hunan University, Changsha, Hunan 410082, China | 1994 | Chinese Journal of Chemistry1994，12，1： | 0 |
| 10 | A fast and colorimetric sensor array for the discrimination of ribonucleotides in human urine samples by gold nanorods显示文摘Ribonucleotides are usually functioned as biomarkers to diagnose diseases and monitor the life activities in living organisms,and their discrimination is of great significance but challenging.Taking advantage of the unique characteristics of gold nanorods(AuNRs),herein,a colorimetric sensor array for discrimination of twelve ribonucleotides was developed based on the chemical etching of AuNRs with controllable aspect ratios.During the etching process,AuNRs were preferentially shortened and eventually turned into Au(Ⅲ) state by Fenton's reaction.The morphological change of AuNRs led to the significant color change and blue shift in the corresponding extinction spectrum.However,when Fe^(2+)bound with ribonucleotides,the Fenton's reaction was prevented and the ability to etch AuNRs was weakened or disappeared.Due to the different structures of nucleotides,the binding ability of them with Fe^(2+) was distinct,resulting in the discrepancy in the chemical etching of AuNRs,which could be developed for distinguishing ribonucleotides.Moreover,the proposed sensor array was successfully explored to distinguish ribonucleotides in complex human urine samples. | Dan Yuan Huihong Yan Jiahui Liu Jiajun Liu Chunmei Li Jian Wang | 2020 | Chinese Chemical Letters2020，31，2： | 0 |
| 11 | Resonant Light Scattering Toward Optical Fiber Humidity Sensors显示文摘The deposition of tetrakis(4-sulonatophenyl)porphyrin(TPPS)thin film on optical fibers presents many possibilities for sensing applications.The J-form aggregation with a narrow and sharp spectral feature at about 490nm and its sensitivity to humidity have been discussed;a fast change of wavelength occurs according with variation in the humidity level.The reproducibility and high sensitivity of TPPS-coated fibers,along with the capabilities of optical fibers,suggest the device as a good candidate for humidity sensing in harsh environments. | Mahboubeh DEHGHANI SANIJ Abolfazl BAHRAMPOUR Ali Reza BAHRAMPOUR | 2019 | Photonic Sensors2019，9，1： | 0 |
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