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In situ non-destructive measurement of Josephson junction resistance using fritting contact technique

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Chinese Physics B 2024年第11期33卷 57-61页

作者： Lei Du Hao-Ran Tao Liang-Liang Guo Hai-Feng Zhang Yong Chen Xin Tian Chi Zhang Zhi-Long Jia Peng Duan Guo-Ping Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Origin Quantum Computing Technology (Hefei) Co. Ltd.Hefei 230088China

Conventional four-probe methods for measuring the resistance of Josephson junctions can damage superconducting thin films,making them unsuitable for frequency measurements of superconducting *** this study,we present a custom probe station measurement system that employs the fritting contact technique to achieve in situ,non-destructive measurements of Josephson junction *** experimental results demonstrate that this method allows for accurate prediction of qubit frequency with an error margin of 17.2 ***,the fritting contact technique does not significantly affect qubit coherence time or the integrity of the superconducting film,confirming its non-destructive *** innovative approach provides a dependable foundation for frequency tuning and addressing frequency collision issues,thus supporting the advancement and practical deployment of superconducting quantum computing.

关键词： non-destructive fritting contact qubit frequency Josephson junction resistance

The non-destructive analysis of ancient jade artifacts unearthed from the Liangzhu sites at Yuhang,Zhejiang

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Science China(Technological Sciences) 2010年第12期53卷 3404-3419页

作者： GAN FuXi1,3, CAO JingYan2, CHENG HuanSheng3, Gu DongHong1, RUI GuoYao2, FANG XiangMing2, DONG JunQing1 & ZHAO HongXia1 1Scientific Archeology Center, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China 2 Research Institute of Cultural Relics and Archeology of Zhejiang, Hangzhou 310014, China 3 Fudan University, Shanghai 200433, China Scientific Archeology Center Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China Fudan University Shanghai China Research Institute of Cultural Relics and Archeology of Zhejiang Hangzhou China

Samples of the jade artifacts unearthed from the Liangzhu sites at Yuhang (Fanshan,Yaoshan, Huiguanshan and Tangshan) of Zhejiang province were described. The chemical composition, phase and jade structure of a hundred and more intact samples were analyzed by the non-destructive techniques of PIXE, XRD and laser Raman spectroscopy. Results showed that the minerals of the jade artifacts mostly belonged to tremolite and tremolite-actinolite. Relationship of the civilization development in the Neolithic age and the application of tremolite type mineral in jade artifacts was discussed. The contents of rare and trace elements in tremolite jade artfacts and in mineral samples were measured for the first time. The possible mineral sources of these tremolite type jade artifacts were discussed.

关键词： Liangzhu culture non-destructive analysis ancient jade artifacts essence and source

non-destructive Imaging of Water Permeation through Cementitious Materials Using MRI

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Open Journal of Civil Engineering 2017年第3期7卷 378-388页

作者： Yuya Sakai Yuki Yokoyama Toshiharu Kishi Institute of Industrial Science The University of Tokyo Tokyo Japan

In this study, water permeation through cementitious materials was observed using magnetic resonance imaging (MRI). The influence of cement type on the magnetic resonance signal was studied subsequent to determining the parameters required for imaging. Consequently, adequate imaging of water permeating through hardened cement paste (HCP) made with white Portland cement was achieved, while water permeation through ordinary Portland cement-based HCP yielded poor signal. HCPs maintained at various levels of relative humidity (RH) were observed, and the signal was detected only from those maintained at an RH of higher than 85%. The water permeation depths in HCP were observed by using MRI, and the measured depths were compared to those measured via a spraying water detector on the split surface of the specimens. As a result, good agreement was confirmed between the two methods. Additionally, MRI was applied to concrete specimens;although it was found that water was not detected when a lightweight aggregate was used, water permeation through concrete with limestone aggregate was detectable via MRI. MRI will help in understanding how water permeation causes and accelerates concrete deteriorations such as rebar corrosion and freezing and thawing.

关键词： MRI Cement Paste Concrete Water Permeation non-destructive Testing

non-destructive Testing of Rods Using a Potential Component of a Magnetic Field

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World Journal of Mechanics 2014年第2期4卷 37-43页

作者： A. K. Tomilin E. V. Prokopenko D. Serikbayev East Kazakhstan State Technical University Ust-Kamenogorsk Republic of Kazakhstan National Research Tomsk Polytechnic University Tomsk Russian Federation

An essentially new method for non-destructive testing of elastic electrically conductive rods using non-vortex electromagnetic induction is proved theoretically. An experimental technique for defining a location of a ... 详细信息

关键词： Elastic Oscillation Electric Mechanical Systems non-destructive Testing A Magnetic Field

Rapid and non-destructive Prediction of Protein Content in Peanut Varieties Using Near-infrared Hyperspectral Imaging Method

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Grain & Oil Science and Technology 2018年第1期1卷 40-43页

作者： WANG Yijie CHENG Junhu School of Food Science and Engineering South China University of Technology

This study was undertaken to investigate the feasibility of near-infrared(NIR) hyperspectral imaging(1 000–2 500 nm) for non-destructive and quantitative prediction of protein content in peanut kernels. Partial least squares regression(PLSR) calibration model was established between the spectral data extracted from the hyperspectral images and the reference measured protein content values, with the coefficient of determination of prediction(R_P^2) of 0.885 and root mean square error of prediction(RMSEP) of 0.465%.Regression coefficients(RC) from PLSR analysis were used to identify the most essential wavelengths that had the greatest influence on changes in the protein content. Eight optimal wavelengths were selected by RC and its corresponding simplified RC-PLSR prediction model was also obtained, showing better performance with a higher R_P^2 of 0.870 and a lower RMSEP of 0.494%. The results indicate that hyperspectral imaging with PLSR analysis can be used as a rapid and non-destructive method for predicting protein content in peanut.

关键词： Hyperspectral imaging Peanut non-destructive Protein content Wavelength selection

Determination of Harvest Maturity for Mango (<i>Mangifera indica</i>L.) Fruit by non-destructive Criteria

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Agricultural Sciences 2021年第10期12卷 1103-1118页

作者： Moomin Abu Nana Sakyiwa Olympio Joseph Ofei Darko Department of Horticulture Faculty of Agriculture University for Development Studies Nyankpala Tamale Ghana Department of Horticulture Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Agricultural Engineering Kwame Nkrumah University of Science and Technology Kumasi Ghana

Haden, Kent, Palmer, and Keitt mango varieties were studied to establish the relationship of harvest time to 1) seasonal accumulated day-degrees or heat units (˚C), 2) daily rainfall amount (mm), and 3) physical fruit development attributes in order to fix maturity standards for export and local markets. Randomized Complete Block Design with four replications was used. In each case of Haden, Kent, Palmer, and Keitt varieties, physical fruit development attributes established as standard harvest maturity values were: weight (640 g, 836 g, 837 g, and 1104 g, respectively), length (16.31 cm, 16.19 cm, 21.22 cm, and 19 cm, respectively), width (30.97 cm, 33.47 cm, 30.86 cm, and 35.91 cm, respectively), volume (598 cm3, 807 cm3, 772 cm3, and 959 cm3, respectively), density (1.147 g/cm3, 1.076 g/cm3, 1.084 g/cm3, and 1.189 g/cm3, respectively), and indentation (0.25 cm, 0.49 cm, and 0.50 cm, respectively). The intensity of grooves around the stylar-scar end of Palmer fruits was studied and used as maturity index. Index values of 0.075 mls, 0.150 mls, 0.425 mls, and 0.116 mls, respectively, for Haden, Kent, Palmer, and Keitt varieties were recorded as latex exuded at harvest since these values tallied with the other physical harvest maturity index values, and also with those of rain fall and temperature values. Temperature, rainfall, and physical characteristics are therefore important non-destructive criteria for fixing maturity index values for mango fruits.

关键词： Harvest Maturity Mango Fruit non-destructive Criteria

Application Research of the non-destructive Testing Using Optical Fiber Sensor

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Journal of Applied Mathematics and Physics 2019年第11期7卷 2917-2925页

作者： Zhiyong Dai Hong Zhang Hongliang Wu Baoji Li Zengshou Peng School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu China

In this paper, an optical fiber sensor is designed by using optical Faraday effect. It is composed of fiber collimator, polarizer, magneto-optical crystal and mirror. Based on the magnetic flux leakage (MFL) theory, The optical fiber sensor was placed between two permanent magnets with the N-pole. Therefore, the optical fiber sensing system was built to detect the defective ferromagnetic objects. Theoretical and experimental studies shown that the system can identify a little defects, such as irons’ blind hole (diameter φ =?3mm , depth t = 4mm?), irons’ grooves (length l= 30mm , width?ω = 10mm ), hole (φ?=?3mm ) and crackle etc. The system has the characteristics of small size, high sensitivity, fast signal response and high resolution. In terms of the defective oil and gas pipelines detection, The optical fiber sensing system is used in non-destructive testing, which will be valuable and meaningful.

关键词： Optical Fiber Sensor High Sensitivity non-destructive Testing

Determination of Bonding Failures in Transparent Materials with non-destructive Methods—Evaluation of Climatically Stressed Glued and Laminated Glass Compounds

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World Journal of Engineering and Technology 2018年第2期6卷 315-331页

作者： Christin Sirtl Christin Sirtl Matthias Kraus Matthias Kraus Christiane Hadlich Christiane Hadlich Andrea Osburg Andrea Osburg Department of Steel and Hybrid Structures Bauhaus University of Weimar Weimar Germany Department of Building Chemistry and Polymer Materials Bauhaus University of Weimar Weimar Germany

As part of an international research project—funded by the European Union—capillary glasses for facades are being developed exploiting storage energy by means of fluids flowing through the capillaries. To meet highest visual demands, acrylate adhesives and EVA films are tested as possible bonding materials for the glass setup. Especially non-destructive methods (visual analysis, analysis of birefringent properties and computed tomographic data) are applied to evaluate failure patterns as well as the long-term behavior considering climatic influences. The experimental investigations are presented after different loading periods, providing information of failure developments. In addition, detailed information and scientific findings on the application of computed tomographic analyses are presented.

关键词： non-destructive Testing Bonding Methods Computed Tomography

New Trends in non-destructive Evaluation of Surface Hardened Layers and Coatings

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Journal of Surface Engineered Materials and Advanced Technology 2013年第2期3卷 154-162页

作者： Valery Vengrinovich Laboratory of Computer Diagnostics Institute of Applied Physics National Academy of Sciences Minsk Belarus

This article should not be considered as a full review of current methods for non-destructive testing of surface layers. Rather, it is a subjective in this area. However, the article provides some review of the challenges posed by the current state of surface layers treatment techniques on the area of non-destructive materials evaluation: enhancement of the sensitivity to the type of defects, increasing resolution to submicron values, the requirement to diagnose the surface layers with depth resolution of properties, diagnosis of multilayer multicomponent surface layers and coatings, treated with concentrated energy.

关键词： Surface Layers Coatings Properties non-destructive Evaluation