检索结果-内蒙古大学图书馆

On the design of long range multiaxial nanofabrication machines based on cartesian nanopositioning systems with additional ultra precision rotations 33

On the design of long range multiaxial nanofabrication machi...

引用

33rd Annual Meeting of the American Society for Precision engineering, ASPE 2018

作者： Schienbein, Ralf Fern, Florian Jorda, David Theska, René Füßl, Roland Institute of Design and Precision Engineering Precision Engineering Group Department of Mechanical Engineering Technische Universität Ilmenau Germany Institute of Process Measurement and Sensor Technology Department of Mechanical Engineering Technische Universität Ilmenau Germany

来源：评论

学校读者我要写书评

暂无评论

Retrospective motion correction for Fast Spin Echo based on conditional GAN with entropy loss

引用

Journal of Physics: Conference Series 2021年第1期1848卷

作者： Yalei Chen Pingan Li Kewen Liu Qingjia Bao Zhao Li Xiaojun Li Information and Communication Engineering Wuhan University of Technology Wuhan Hubei 430070 China Hubei Key Laboratory of Broadband Wireless Communication and Sensor Networks Wuhan University of Technology 430070 Wuhan China Department of Chemical and Biological Physics Weizmann Institute of Science Rehovot Israel State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Center for Magnetic Resonance Wuhan Institute of Physics and Mathematics Innovation Academy for Precision Measurement Science and Technology 430071Wuhan China

We proposed a new end-to-end motion correction method based on conditional generative adversarial network (GAN) and minimum entropy of MRI images for Fast Spin Echo (FSE) sequence. The network contains an encoder-decoder generator to generate the motion-corrected images and a PatchGAN discriminator to classify an image as either real (motion-free) or fake(motion-corrected). Moreover, the image's entropy is set as one loss item in the cGAN's loss as the entropy increases monotonically with the motion amplitude, indicating that entropy is a good criterion for motion. The results show that the proposed method can effectively reduce the artifacts and obtain high-quality motion-corrected images from the motion-affected images in both pre-clinical and clinical datasets.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Non-destructive transmissive inductive thickness sensor for IoT applications 15

Non-destructive transmissive inductive thickness sensor for ...

引用

15th International Multi-Conference on Systems, Signals and Devices, SSD 2018

作者： Bouattour, Ghada Trigona, Carlo Jmeaa Derbel, Houda Ben Baglio, Salvatore Rosa, Roberto La Kanoun, Olfa Department for Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany Department of Electrical Engineering National Engineering School of Sfax University of Sfax Sfax Tunisia D.I.E.E.I.-Dipartimento di Ingegneria Elettrica Elettronica e Informatica University of Catania Viale Andrea Doria 6 Catania95125 Italy STMicroelectronics Stradale Primo Sole 50 Catania95121 Italy

ISBN: (纸本)9781538653050

Inductive sensors have decisive advantages considering simplicity of implementation, low cost and usability in harsh environments. In this paper, we present a concept of a non-destructive transmissive inductive film thickness sensor for IoT applications. The sensor is based on a transformer principle composed of a fixed sending side using a multi-coil system and one receiving sensor coil. It measures the distance between two objects or the thickness of nonferromagnetic target materials. The sensor coil at the receiving side is battery-less, can be flexibly placed and is connected to a conditioning circuit and a low energy Bluetooth board (STEVAL-IDB007Vl), which starts automatically and sends the sensor output to a smartphone or a tablet. The measurement data are monitored by using a specially developed APP. Experimental results show that the sensor measures film thicknesses up to 1.2 cm with a sensitivity of about 0.032 V/mm and a resolution of 0.3 mm. Thereby a noise level of about 9.6 mV is recorded. © 2018 IEEE.

关键词： Thickness measurement

来源：评论

学校读者我要写书评

暂无评论

A Smart Sensing Architecture for Misalignment measurements 17

A Smart Sensing Architecture for Misalignment Measurements

引用

17th IEEE sensorS Conference, sensorS 2018

作者： Bouattour, Ghada Trigona, Carlo Barioul, Rim Derbel, Houda Ben Jemaa Rosa, Roberto La Baglio, Salvatore Kanoun, Olfa Measurement and Sensor Technology Technische Universität Chemnitz Chemnitz Germany Department of Electrical Engineering National Engineering School of Sfax University of Sfax Sfax Tunisia D.I.E.E.I. Dipartimento di Ingegneria Elettrica Elettronica e Informatica University of Catania Viale Andrea Doria 6 Catania95125 Italy STMicroelectronics Stradale Primo Sole 50 Catania95121 Italy

ISBN: (纸本)9781538647073

Smart sensing architectures based on inductive readout are very intriguing solutions to perform measurements in industrial and in general in harsh environments. The proposed system is based on a primary coil as fixed sensing element and in front of it, a movable and battery less receiving sensor coil. The architecture measures the misalignment, with a non-destructive approach, between two objects and offers a high flexibility to perform the measurements also in presence of humidity, dirtiness, debris, oils or other non-homogeneous surfaces. Furthermore, it is easy to be implemented at low cost and it presents a wide operative range. For data acquisition, a low energy Bluetooth board is used, which starts automatically as soon as a minimum voltage value is reached. The system has been designed and studied;a laboratory prototype has been realized and experimentally validated. The results demonstrate the suitability of the proposed method. © 2018 IEEE.

关键词： Inductive sensors

来源：评论

学校读者我要写书评

暂无评论

Contribution to the mechanical enhancement of load cells in precision weighing technology by means of advanced adjustment strategies 17

Contribution to the mechanical enhancement of load cells in ...

引用

17th International Conference of the European Society for Precision engineering and Nanotechnology, EUSPEN 2017

作者： Darnieder, Maximilian Marangoni, Rafael R. Theska, René Fröhlich, Thomas Rahneberg, Ilko Institute of Design and Precision Engineering Precision Engineering Group Department of Mechanical Engineering Technische Universität Ilmenau Germany Institute of Process Measurement and Sensor Technology Process Measurement Group Department of Mechanical Engineering Technische Universität Ilmenau Germany

ISBN: (纸本)9780995775107

The accuracy of force measurement systems is predominantly influenced by its stiffness towards deflection. Monolithic mechanical systems in precision weighing technology rely on ultrathin flexure hinges. Further stiffness reduction by a decrease of the minimum hinge thickness is unfavourable. Consequently, the present concept relies on compensation rather than a reduction of the stiffness. Based on precise adjustments, the system's state is altered towards an astatic state. Hereby, the overall stiffness and the tilt sensitivity is reduced. These properties have been determined as major contributions to the measurement error. The results of the theoretical investigations form a basis for future experiments and a further improvement of load cells.

关键词： Stiffness

来源：评论

学校读者我要写书评

暂无评论

Development of a smart acceleration measurement unit for industry 4.0 15

Development of a smart acceleration measurement unit for ind...

引用

15th International Multi-Conference on Systems, Signals and Devices, SSD 2018

作者： Trigona, Carlo Bradai, Sonia Naifar, Slim Rosa, Roberto La Baglio, Salvatore Kanoun, Olfa Dipartimento di Ingegneria Elettrica Elettronica e Informatica D.I.E.E.I University of Catania Viale Andrea Doria 6 Catania95125 Italy Technische Universität Chemnitz Department for Measurement and Sensor Technology Reichenhainer Straβe 70 Chemnitz09126 Germany Laboratory of Electromechanical Systems National Engineering School of Sfax University of Sfax Route de Soukra km 4 Sfax3038 Tunisia STMicroelectronics Stradale Primo Sole 50 Catania95121 Italy

ISBN: (纸本)9781538653050

One of the main issues taken into account concerns the reduction of power consumption. In particular, also the 'standby' condition must be accounted and it represents a significant amount of the total power dissipation. Systems using a wake-up strategy transmit the data only when the measurand exceeds a specific threshold level. This operation strategy also named 'Zero-Current Standby' has been pursued in this paper. In particular, we present a smart acceleration measurement unit, based on a piezoelectric transducer which is capable to monitor sinusoidal vibrations (50 Hz) coming from vibrating devices, such as electrical machine, industrial equipment, instrumentations, etc.). The proposed smart acceleration measurement unit provides the power required by the electronic conditioning circuit and the Bluetooth transmitter only when the level of acceleration overcomes a fixed threshold. This threshold can be adjusted to corresponding values to a malfunction of the vibrating device. The activity of the device can be monitored within an IoT approach using a specially developed APP. Laboratory characterization and experimental results are also presented. They show a linear characteristic, which makes the proposed system suitable for many applications. © 2018 IEEE.

关键词： Industry 4.0

来源：评论

学校读者我要写书评

暂无评论

Scanning strategies for long term and long distance AFM measurements 16

Scanning strategies for long term and long distance AFM meas...

引用

16th International Conference of the European Society for Precision engineering and Nanotechnology, EUSPEN 2016

作者： Vorbringer-Dorozhovets, Nataliya Manske, Eberhard Production and Precision Measurement Technology Group Institute for Process Measurement and Sensor Technology Department of Mechanical Engineering Technische Universität Ilmenau Germany

ISBN: (纸本)9780956679086

Long range AFM measurements are mainly affected by drift caused by relative long measurement times and by tip wear caused by large measurement distances. One way to avoid these effects is to reduce measurement times and scanning distances. Special intelligent scanning strategies were developed and investigated. These strategies are based on adaptive sampling and different trajectories. This paper gives an introduction into the implemented scanning strategies. This paper presents one example of the developed "adaptive sampling" strategy as well as first results of the circular scan.

关键词： Scanning

来源：评论

学校读者我要写书评

暂无评论

Generating ideal reference geometry for cutting edges

引用

Journal of Physics: Conference Series 2018年第14期1065卷

作者： Abdullah Karatas Jörg Seewig University of Kaiserslautern Department of Mechanical and Process Engineering Institute for Measurement and Sensor-Technology Gottlieb-Daimler-Str. Building 44 D-67663 Kaiserslautern Germany

In the last years, many different techniques for rating cutting edges were presented. Nevertheless an automatic measurement and indication of quality from cutting edges was covered less attention. Although the state of cutting edges is very important in many cases during the manufacturing process. An automatic indication of quality can roughly be realised in three steps. The step, generating an ideal reference geometry from measured data, will be discussed in this paper. Therefore different types of splines and a robust filtering method is used. The other two steps, mainly measuring and estimating quantification parameters, were discussed in diverse sources.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Breaking the energy-symmetry blockade in magneto-optical rotation

arXiv

引用

arXiv 2018年

作者： Zhu, Chengjie Zhou, Feng Zhu, Eric Y. Hagley, E.W. Deng, L. MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and Engineering Tongji University Shanghai200092 China Engineering Physics Division National Institute of Standards & Technology GaithersburgMD20899 United States uhan Institute of Physics & Mathematics Chinese Academy of Sciences Wuhan430071 China School of Optical and Electronic Information Huazhong University of Science & Technology Wuhan430074 China Quantum Measurement Division National Institute of Standards & Technology GaithersburgMD20899 United States Department of Electrical and Computer Engineering University of Toronto TorontoONM5S 3G4 Canada Sensor Science Division National Institute of Standards & Technology GaithersburgMD20899 United States

The magneto-optical polarization rotation effect has prolific applications in various research areas spanning the scientific spectrum including space and interstellar research, nano-technology and material science, biomedical imaging, and sub-atomic particle research. In nonlinear magneto- optical rotation (NMOR), the intensity of a linearly-polarized probe field affects the rotation of its own polarization plane while propagating in a magnetized medium. However, typical NMOR signals of conventional single-beam Λ-scheme atomic magnetometers are peculiarly small, requiring sophisticated magnetic shielding under complex operational conditions. Here, we show the presence of an energy-symmetry blockade that undermines the NMOR effect in conventional single-beam Λ-scheme atomic magnetometers. We further demonstrate, both experimentally and theoretically, an inelastic wave-mixing technique that breaks this NMOR blockade, resulting in more than five orders of magnitude (>300,000-fold) NMOR optical signal power spectral density enhancement never before seen with conventional single-beam Λ-scheme atomic magnetometers. This new technique, demonstrated with substantially reduced light intensities, may lead to many applications, especially in the field of bio-magnetism and high-resolution low-field magnetic imaging. Copyright © 2018, The Authors. All rights reserved.

关键词： Medical imaging

来源：评论

学校读者我要写书评

暂无评论

Dermal Tattoo Biosensors for Colorimetric Metabolite Detection

引用

Angewandte Chemie 2019年第31期131卷

作者： Ali K. Yetisen Rosalia Moreddu Sarah Seifi Nan Jiang Katia Vega Xingchen Dong Jie Dong Haider Butt Martin Jakobi Martin Elsner Alexander W. Koch Institute for Measurement Systems and Sensor Technology Technical University of Munich 80333 Munich Germany School of Chemical Engineering University of Birmingham Edgbaston Birmingham B15 2TT UK School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA Department of Design University of California Davis CA 95616 USA Department of Mechanical Engineering Khalifa University Abu Dhabi 127788 United Arab Emirates Chair of Analytical Chemistry and Water Chemistry Technical University of Munich 81377 Munich Germany

Tattooing is a ubiquitous body modification involving the injection of ink and/or dye pigments into the dermis. Biosensors in the form of tattoos can be used to monitor metabolites in interstitial fluid. Here, minimally invasive, injectable dermal biosensors were developed for measuring pH, glucose, and albumin concentrations. The dermal pH sensor was based on methyl red, bromothymol blue, and phenolphthalein, which responded to a pH range from 5.0 to 9.0. The dermal glucose sensor consisted of glucose oxidase, 3,3′,5,5′‐tetramethylbenzidine, and peroxidase that detected concentrations up to 50.0 mmol L −1 . The dermal albumin sensor consisted of 3′,3′′,5′,5′′‐tetrachlorophenol‐3,4,5,6‐tetrabromosulfophthalein to measure concentrations up to 5.0 g L −1 . The sensors were multiplexed in ex vivo skin tissue and quantitative readouts were obtained using a smartphone camera. These sensors can be used to manage of acid–base homeostasis, diabetes, and liver failure in point‐of‐care settings.

关键词： Dermatologie Kolorimetrische sensoren Photomedizin Tätowierungen Tinten

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：