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Transparent perovskite glass-ceramics for visual optical thermometry

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Journal of Rare Earths 2021年第6期39卷 712-717,I0004页

作者： Qihua Yang Lei Zhao Zhaohui Fang Ze Yang Jiangyan Cao Yiyu Cai Dacheng Zhou Xue Yu Jianbei Qiu Xuhui Xu Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China School of Physics and Opto-Electronic Technology Baoji University of Arts and SciencesBaoji 721016China Key Laboratory of Advanced Materials of Yunnan Province Kunming 650093China

Optical thermometers have aroused considerable attention in recent years,and the increasing demand of sensitivity for practical application encourages the investigation on developing innovative non-contact optical thermo metric materials with higher sensitivity and *** quantum dots(QDs)with excellent temperature-dependence optical properties,provide a feasible approach to realizing the detection of temperature change,however,their poor high temperature thermal stability and the facile realization to obtain the production remain a daunting ***,growing Tb^(3+)-doped CsPbl_(3) QDs in situ in borosilicate glass is proposed,which ensures the phase stability,and high-efficiency florescence output of the all-inorganic perovskite as a temperature sensor.A higher absolute and relative temperature sensitivity(0.0398 K^(-1) and 7.12%/K,respectively),along with the visible color change from orange-red to yellow-green with the increase of temperature is ***,the repeatable florescence intensity of Tb^(3+)-doped CsPbl_(3) QDs under high temperature enables their temperature sensing application.

关键词： CsPbI_(3)quantum dots thermometry Thermal stability Visual change Rare earths

InAs nanowire superconducting tunnel junctions： Quasiparticle spectroscopy, thermometry, and nanorefrigeration

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Nano Research 2017年第10期10卷 3468-3475页

作者： Jaakko Mastomaki Stefano Roddaro Mirko Rocci Valentina Zannier Daniele Ercolani Lucia Sorba Ilari J. Maasilta Nadia Ligato Antonio Fornieri Elia Strambini Francesco Giazotto NEST Scuola Normale Superiore and Istituto Nanoscienze-CNR Piazza S. Silvestro 12 I-55127 Pisa Italy Nanoscience Center Department of Physics University of Jyvaskyla 40014 Jyvaskyla Finland

We demonstrate an original method based on controlled oxidation for creating high-quality tunnel junctions between superconducting A1 reservoirs and InAs semiconductor nanowires （NWs）. We show clean tunnel characteristics with a current suppression by 〉4 orders of magnitude for a junction bias well below the A1 gap of △0≈ 200 μeV. The experimental data agree well with the Bardeen- Cooper-Schrieffer theoretical expectations for a superconducting tunnel junction. The studied devices employ small-scale tunnel contacts functioning as thermometers as well as larger electrodes that provide proof-of-principle active cooling of the electron distribution in the NWs. A peak refrigeration of approximately δT = 10 mK is achieved at a bath temperature of Tbath≈ 250-350 mK for our prototype devices. This method introduces important perspectives for the investigation of the thermoelectric effects in semiconductor nanostructures and for nanoscale refrigeration.

关键词： InAs nanowire superconducting tunnel junction thermometry nanorefrigeration

Highly sensitive up-conversion phosphor for optical thermometry:CaLaAl3O7:Er3+/Yb3+

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Journal of Rare Earths 2019年第9期37卷 937-942,I0002页

作者： Peng Gao Xu Li Yi Gong Guangming Shen Suheng Zhang Li Guan Hebei Key Laboratory of Photo-Electricity Information and Materials College of Physics Science and Technology Hebei University

Herein,we reported Er^3+/Yb^3+co-doped CaLaAl3O7 up-conversion phosphors synthesized via solid state reaction,which was further explored as a new optical *** luminescent properties of Er^3+or Er^3+/Yb^3+doped CaLaAl3O7 phosphor was studied in *** two-photon process for the green emissions of Er^3+were confirmed by the power-dependent *** up-conversion optical temperature sensing performances of the Er^3+/Yb^3+-codoped CaLaAl3O7 phosphor were investigated based on the FIR *** maximum sensitivity of this phosphor can reach about 0.00345 K-1 at 453 K,which reveals this phosphor can be a promising candidate for optical thermometry devices.

关键词： Luminescence Phosphor Up-conversion FIR Optical thermometry Rare earths

NIR emitting terephthalates(SmxDyyGd1-x-y)2(tph)3(H2O)4 for luminescence thermometry in the physiological range

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Journal of Rare Earths 2020年第5期38卷 492-497页

作者： Anastasia V.Orlova Vladislava Yu.Kozhevnikova Leonid S.Lepnev Alexander S.Goloveshkin Irina M.Le-Deigen Valentina V.Utochnikova M.V.Lomonosov Moscow State University 1/3 Leninskye GoryMoscow119991Russian Federation P.N.Lebedev Physical Institute Leninsky prosp.531J9991MoscowRussian Federation A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of SciencesVavilova St.28119991MoscowRussian Federation EVOLED Ltd. 1A-24 Puskina ielaRiga LV-1050Latvia

The first luminescence thermometer based on coordination compound of samarium and dysprosium is repo *** luminescence intensity and high signal resolution are reached thanks to the concentration quenching reduction due to the use of the trimetallic complexes of *** best thermometric properties in a wide temperature range among the studied systems are demonstrated by(Sm0.2Dy0.15Gd0.65)2(tph)3(H2O)*** sensitivity reaches 0.5%/K in visible range and 1.2%/K in NIR range at low temperatures and 0.5%/K and 0.8%/K in physiological range.

关键词： Luminescence Lanthanides Carboxylates thermometry NIR range Rare earths

Optical thermometry based on near-infrared luminescence from phosphors mixture

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Journal of Rare Earths 2022年第2期40卷 201-210,I0001页

作者： Wei Xu Xin Zhu Di Zhao Longjiang Zheng Fengkai Shang Zhiguo Zhang School of Electrical Engineering Yanshan UniversityQinhuangdao 066004China Key Lab of Measurement Technology&Instrumentation of Hebei Province Yanshan UniversityQinhuangdao 066004China Condensed Matter Science and Technology Institute Harbin Institute of TechnologyHarbin 150001China

Luminescence ratiometric thermometry based on rare earth(RE)ions has attracted great interest for the potential applications in many *** the improvement of the measurement sensitivity and accuracy is significantly restricted due to the small energy gap between thermally coupled levels(TCL).Here,a strategy striving for good thermometric properties of luminescent materials was designed by using the phosphors mixture composed of NaY(WO_(4))_(2):Nd^(3+)-Yb^(3+)and NaY(WO_(4))_(2):Er^(3+),which were prepared by secondary sintering *** the excitation of 980 nm lase r,the near-infrared(NIR)emissions(710-920 nm)from Nd^(3+)ions are effectively strengthened when the temperature increases from 304 to773 K,whereas Er^(3+)NIR luminescence centered at around 1536 nm is thermally *** remarkably different response of NIR emissions to the thermal variation allows us to map temperature through the ratiometric *** optimizing the dopant concentration of rare earth(RE)ions,a maximum sensitivity of 5.14%/K together with a measurement uncertainty of about 0.1 K is acquired at304 K,which is superior to the previously reported RE luminescence-based temperature sensors,indicating that the approach developed here can pave the way for achieving optical thermometry with desired properties.

关键词： NIR luminescence thermometry NaY(WO_(4))_(2) Er^(3+)ions Nd3+ions Rare earths

Using zircon saturation thermometry of source magma in strongly altered volcanic ashes

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Acta Geochimica 2022年第3期41卷 406-418页

作者： Tarmo Kiipli Department of Geology Tallinn University of Technology5 Ehitajate Road19086 TallinnEstonia

The present study deals with the possibilities of applying the zircon saturation thermometry, which is based on the equilibrium between the zircon crystals and the melt, to strongly altered volcanic ashes—bentonites. It proposes an alternative to a widely used method of calculating magma temperature from Zr content and major component composition(Boehnke in Chem Geol351:324–333, 2013), that is not suitable for bentonites, as most of the major components have been largely altered in these rocks. For calculating source magma temperatures in strongly altered volcanic ashes, the exponential function from the Zr(ppm)/Al_(2)O_(3)(%) ratio with compositional corrections from the TiO_(2)/Al_(2)O_(3) ratio was found applicable. The idea to use the ratios of these elements is based on the low mobility of these elements in the earth’s surface conditions. Temperatures of magma, forming in the partial melting process, are assessed from the bulk rock composition. Pre-eruption temperatures were estimated from the composition of fine fractions of bentonites. The accuracy of the new method was established from comparison with the method by Boehnke et al.(Chem Geol 351:324–333,2013). The difference between the two methods was mostly less than ± 30° to ± 50°. The comparison with the magma temperature, estimated from the sanidine composition,revealed 13° lower values on average. Although the proposed method for estimating the source magma temperatures is less precise than the method of accounting for detailed rock compositions, it can be used in strongly altered rocks, where other methods are not usable. The new method still enables differentiation between felsic source magmas originating at low or high temperatures. Early Palaeozoic bentonites in the Baltic Basin can be divided,according to the source magma temperatures, into two types:(1) Low temperature(650–790 ℃), containing potassium-rich sanidine and abundant biotite(S type),(2)high temperature(770–850 ℃) with sodium-rich sanidin

关键词： Zircon thermometry Volcanic ash Kbentonite Source magma Sanidine

Effect of arc on radiation thermometry in welding process

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China Welding 2002年第1期11卷 38-41页

作者：李亮玉王燕武宝林 Tianjin Polytech. Univ. Tianjin 300160 China

The effect of arc on radiation thermometry is analyzed in a field close to the arc during the welding process, and the ratio of signal to noise and other factors are obtained for a small current arc .The method of the... 详细信息

关键词： arc radiation thermometry

Application of Zr-in-rutile thermometry:a case study from ultrahigh-temperature granulites of the Khondalite belt,North China Craton

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Application of Zr-in-rutile thermometry:a case study from ul...

Sub-millikelvin station at Synergetic Extreme Condition User Facility

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： Shujuan Jiao·Jinghui Guo·Qian Mao·Ruifu Zhao State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences,100029 Beijing,China

Zr-in-rutile thermometry was applied to ultra-high -temperature(UHT) granulites from three localities, Dongpo,Tuguishan,and Dajing/Tuguiwula of the Khondalite *** China *** concentrations of analyzed rutiles were detected by LA-ICP-MS and EMP, which display a mutative composition zoning,a large inter-grain variation,a bimodal distribution at around 1,500 and 6,000 ppm,and no relationship with the textural setting (matrix ***).These characteristics were likely caused by post-peak diffusional resetting associated with slow cooling rates and the presence of a CO-rich fluid. The grains with lower Zr concentrations(～500 to～3,000 ppm) and temperature estimates(～650 to～850℃) occur close to or in contact with zircon,which was easily affected by post-peak processes(for example: diffusion,dissolution/reprecipitation).The lowest temperatures (～650 to～700℃) we obtained represent the closure temperature of *** with higher Zr concentrations (～3,000 to～8,000 ppm) and calculated temperatures (～850 to～1,000℃) were least affected by late resetting,giving near-peak metamorphic temperatures. These temperature results higher than 900℃,even in excess of 1,000℃from the three localities,reconfirm the presence of UHT *** results also suggest that Zr-in-rutile thermometry is valid for ultrahigh-temperature *** addition,there are positive correlations between concentrations of Zr and Hf,Nb and Ta of the investigated rutiles,but the correlations weaken as the concentrations increase,especially for Nb and Ta,implying fractionation of Nb and Ta.

关键词： Ultrahigh-temperature metamorphism Rutile thermometry North China Craton

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Chinese Physics B 2018年第7期27卷 20-31页

作者： Zhi Gang Cheng Jie Fan Xiunian Jing Li Lu Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China

The Institute of Physics, Chinese Academy of Sciences, is in charge of the construction of the Synergetic Extreme Condition User Facility （SECUF） in Huairou, Beijing. The SECUF is a comprehensive facility focused on providing extreme physical conditions for scientific research, including an ultralow temperature, ultrahigh pressure, ultrahigh magnetic field, and ultrafast laser. The ultralow temperature will be realized by the sub-millikelvin （sub-mK） station, whose main component is an adiabatic nuclear demagnetization refrigerator （ANDR）. The refrigerator is designed to have a base temperature below 1 mK and a magnetic field up to 16 T for experiments, as well as a characteristic parameter of B/T ≥-104 T/K. In this review, we introduce adiabatic nuclear demagnetization refrigeration, thermometry from 10 mK to sub-mK, the properties and parameters of the ANDR of the SECUF, and related prospective research topics.

关键词： adiabatic nuclear magnetization thermometry superfluid 3He fractional quantum Hall effects