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THE MULTIELEMENT MERCURIC IODIDE DETECTOR ARRAY WITH COMPUTER-CONTROLLED MINIATURIZED ELECTRONICS FOR EXAFS

IEEE TRANSACTIONS ON NUCLEAR SCIENCE 1995年第4期42卷 558-564页

作者： PATT, BE IWANCZYK, JS SZCZEBIOT, R MACULEWICZ, G WANG, M WANG, YJ HEDMAN, B HODGSON, KO COX, AD STANFORD SYNCHROTRON RADIAT LAB STANFORDCA 94309 STANFORD UNIV DEPT CHEMSTANFORDCA 94305

Construction of a 100-element HgI2 detector array, with miniaturized electronics, and software developed for synchrotron applications in the 5 keV to 35 keV region has been completed. Recently, extended x-ray absorption fine structure (EXAFS) data on dilute (similar to 1mM) metallo-protein samples were obtained with up to seventy-five elements of the system installed. The data quality obtained is excellent and shows that the detector is quite competitive as compared to commercially available systems. The system represents the largest detector array ever developed for high resolution, high count rate x-ray synchrotron applications. It also represents the first development and demonstration of high-density miniaturized spectroscopy electronics with this high level of performance. Lastly, the integration of the whole system into an automated Computer-controlled environment represents a major advancement in the user interface for XAS measurements. These experiments clearly demonstrate that the HgI2 system, with the miniaturized electronics and associated computer control functions well. In addition it shows that the new system provides superior ease of use and functionality, and that data quality is as good as or better than with state-of-the-art cryogenically cooled Ge systems.

关键词： sensor arrays Synchrotrons Application software Electromagnetic wave absorption X-ray detection X-ray detectors Spectroscopy User interfaces Automatic control Control systems

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Partial Discharge Multispectral detection in Air with a SiPM-based sensor 12

Partial Discharge Multispectral detection in Air with a SiPM...

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12th International conference on the Properties and applications of Dielectric Materials (ICPADM)

作者： Zhou, Jierui Ren, Ming Huang, Wenguang Zhang, Chongxing Dong, Ming Schichler, Uwe Xi An Jiao Tong Univ State Key Lab Elect Insulat Power Equipment Xian Shaanxi Peoples R China Graz Univ Technol Inst High Voltage Engn & Syst Performance Graz Steiermark Austria

ISBN: (纸本)9781538657881

Partial discharge (PD) is one of the reasons for the insulation deterioration in power equipment. As an intrinsic PD characterization method, optical detection is always just employed as a tool for laboratory study. With the development of solid-state photosensitive semiconductor device, it provides the possibility for implanting tiny photosensitive devices within the power equipment. In this paper, a SiPM-based PD light detector was designed for power supply and eliciting signal from SiPM. In order to compare the SiPM with other traditional PD detection methods, a synchronous PD measurement system was built to detect PD in optical and electrical method simultaneously. In addition, the PD light signals at different spectrum were detected by adding filters on the surface of SiPM. The results show that that SiPM has the same PD detection ability as that of high frequency current transformer (HFCT) and photomultiplier tube (PMT). There are some differences in the proportions of spectral components obtained by SiPM for different insulation defects, which provides an insight for insulation status evaluation.

关键词： SiPM Partial discharge Air Multispectral HFCT PMT Insulation status evaluation

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Quantum Dots for Explosive Detection in Air - Two Complimentary Approaches 17

Quantum Dots for Explosive Detection in Air - Two Compliment...

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17th conference on Ph.D Research in Microelectronics and Electronics (PRIME)

作者： Mitri, Federica De Iacovo, Andrea De Santis, Serena Sotgiu, Giovanni Colace, Lorenzo Roma Tre Univ Dept Ind Elect & Mech Engn Rome Italy

ISBN: (纸本)9781665467001

With the threatening increase in explosive-based terrorism against civil populations, the development of new devices capable of a rapid and cost-effective detection of hidden explosives has become a worldwide priority. Recently, semiconductor quantum dots have demonstrated great potential as luminescent probes for trace explosive detection. However, the growing interest in this technology and its potentiality is not accompanied by its widespread use in practical applications and in operating environments since most of the proposed devices still consist of lab-based procedures not amenable for field operation. This work explores and compares two alternative ways of employing quantum dots as sensing material to build simple, compact, and reusable devices for vapor explosive detection, beyond their typical use as fluorescent probes in solution. First, a high-performance chemiresistive sensor whose electrical resistance changes proportionally to the target gas concentration is proposed. Then, we present an optical system based on the solid-state photoluminescence of quantum dots cast on a silicon substrate. Easy fabrication, portability, low-cost, high sensitivity, and reusability make both the reported devices quite promising not only for laboratory-scale testing but also for practical applications on the field.

关键词： quantum dots nitroaromatic compounds vapor detection chemiresistive device solid-state photoluminescence

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Novel all-silicon sensor structure with integrated poly-Si electrodes

Novel all-silicon sensor structure with integrated poly-Si e...

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18th Annual International conference of IEEE Engineering-in-Medicine-amd-Biology-Society

作者： Montelius, L Ling, TGI Tegenfeldt, JO Univ Lund Dept Solid State Phys S-22100 Lund Sweden

ISBN: (纸本)078033812X

The interest in miniaturization of modern chemical and medical sensors is steadily increasing. However, when employing methods and fabrication procedures especially developed for microelectronics, one may encounter new and unpredictable problems for applications in aqueous media. For instance, in microelectronics often a dual metal layer system is employed for making electrical contacts. In a solution such a contact may result in galvanic reactions and/or may dissolve in the cleaning agents used for sterilization of medical devices. To address such issues we have employed an all-silicon based process technology for fabrication of sturdy and reliable devices with integrated poly-Silicon electrodes that tolerate most chemical environments. In this presentation we will report on the first results using such electrodes. A comparative study between identical poly-Si and Aluminium electrodes was made in order to investigate the usefulness of poly-Si electrodes. We will also demonstrate the nice possibility to use wall-documented methods for surface modifications using silane coupling chemistry. We believe this added benefit for the silicon based electrodes of easy surface modification processes, as compared with metal electrodes, to be extremely valuable for the development of accurate and tailored sensor structures for specific applications.

关键词： Microelectrodes

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Personal reflections on fiber optic gyros mid-1970s to the present 16

Personal reflections on fiber optic gyros mid-1970s to the p...

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conference on Fiber Optic sensors and applications XVI

作者： Udd, Eric Scheel, Ingrid Udd Columbia Gorge Res LLC 2555 NE 205th Ave Fairview OR 97024 USA

ISBN: (数字)9781510626669

ISBN: (纸本)9781510626669

Since the early days of flight gyroscopes have acted as a key enabling technology for stabilization and guidance of aircraft and rockets. Mechanical gyros were the first to be used. They suffered from repeated failures and were aggressively replaced by ring laser gyros beginning in the late 1970s. Almost in parallel with the introduction of ring laser gyros, the first solid state gyros based on fiber optics began their development, at about the same time I began working on fiber sensors at McDonnell Douglas. This paper summarizes thoughts on the past, present and future of fiber optic gyros.

关键词： interferometer fiber optics gyro rotation sensor

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A Comprehensive ASIC/FPGA Prototyping Environment for Exploring Embedded Processing Systems for Advanced Driver Assistance applications 14

A Comprehensive ASIC/FPGA Prototyping Environment for Explor...

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International conference on Embedded Computer Systems - Architectures, Modeling, and Simulation (SAMOS)

作者： Giesemann, Florian Paya-Vaya, Guillermo Blume, Holger Limmer, Matthias Ritter, Werner Leibniz Univ Hannover Inst Microelect Syst D-30167 Hannover Germany Daimler AG Vis Enhancement D-89081 Ulm Germany

ISBN: (纸本)9781479937707

The development of complex algorithms for advanced driver assistance systems is a challenging task, due to the high innovation rate and processing demands of applications in this field. The development is usually supported by a software development framework that provides an infrastructure (e.g., access to sensor data) that simulates and evaluates the algorithms. One problem, especially with computationally intensive algorithms, is the slow simulation speed. This paper presents a prototyping environment that connects a software development framework with a FPGA-based hardware platform. This allows implementing computationally intensive tasks in hardware. The proposed rapid prototyping system not only reduces the simulation time, thereby allowing the software designer to evaluate algorithmic parameters with quicker feedback, but also allows verifying and evaluating hardware modules for rapid prototyping. A case study is presented in which a traffic sign detection algorithm is implemented on a soft-core processor. By using the hardware implementation the simulation was accelerated by a factor of 65, compared to the pure software implementation.

关键词： rapid prototyping FPGA design space exploration hardware-software-co-simulation

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Proceedings of the IEEE International conference on Micro Electro Mechanical Systems (MEMS)

Proceedings of the IEEE International Conference on Micro El...

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30th IEEE International conference on Micro Electro Mechanical Systems, MEMS 2017

ISBN: (纸本)9781509050789

The proceedings contain 351 papers. The topics discussed include: carbon nanotubes network contact lubrication for highly reliable MEMS switch;64-pixel solid state CMOS compatible ultrasonic fingerprint reader;environmentally robust differential resonant accelerometer in a wafer-scale encapsulation process;ultra-low-voltage gyroscopes based on piezoresistive NEMS for drive-motion and Coriolis-motion sensing;flexible piezoelectric strain energy harvester responsive to multi-directional input forces and its application to self-powered motion sensor;acoustic energy harvester utilizing a miniature rotor actuated by acoustically oscillating bubbles-induced synthetic jets;piezoelectric and electromagnetic hybrid energy harvester using two cantilevers for frequency up-conversion;linear zero mode waveguides for the study of chemo-mechanical coupling mechanism of kinesin;a multi-tone testing technique for production characterization of micro-resonators;integrating multi-electrode arrays in microfluidic hanging-drop networks;rapid antibiotic susceptibility test: commercialization of life saving MEMS devices;piezoelectric/magnetostrictive MEMS resonant sensor array for in-plane multi-axis magnetic field detection;flexible and transparent ph monitoring system with NFC communication for wound monitoring applications;development of an anatomically conformal parylene neural probe array for multi-region hippocampal recordings;and red blood cell deformability upon continuous or repetitive loadings.

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Passive electro optical counter-countermeasures 41

Passive electro optical counter-countermeasures

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41st conference on Infrared Technology and applications

作者： Donval, Ariela Fisher, Tali Oron, Moshe KiloLambda Technol Ltd IL-69719 Tel Aviv Israel

ISBN: (纸本)9781628415674

New development of imaging systems implies the use of multi band wavelength, VIS and IR, for imaging enhancement and more data presenting. As lasers as countermeasures against optics are widely spread in the recent years, these systems need to be protected from damage caused by intense radiation yet the optical system has to be transparent at these wavelengths for low light power. This paper presents a non-linear, solid-state passive wideband optical protection filters (WPF). These filters have advantages over fixed spectral filters, which permanently block only specific wavelengths, the wideband filter is transparent at all wavelengths until it is hit by damaging light. We present work in continuation of our special design WPF suitable for dual-and multi-band wavelength range, including transmission and functionality performances. We demonstrate a new design transferring our WPF filter from VIS/NIR into the MW/LWIR.

关键词： Wideband filter FLIR protection laser damage prevention sensor protection sensor hardening optical power limiting

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Coplanar differential capacitively coupled contactless conductivity detection (CD-C4D) sensor for micro object inside fluidic flow recognization 19

Coplanar differential capacitively coupled contactless condu...

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19th International conference on solid-state sensors, Actuators and Microsystems, TRANSDUCERS 2017

作者： Thuy, Ha Tran Thi Quang, Loc Do Dau, Van Thanh Kim, Ngan Nguyen Thi Le Van, Chieu Aoyagi, Masahiro Kikuchi, Katsuya Bui, Tung Thanh Posts and Telecommunications Institute of Technology Hanoi Viet Nam Hanoi University of Science Vietnam National University Hanoi Viet Nam Sumitomo Chemical. Ltd Hyogo Japan University of Engineering and Technology Vietnam National University Hanoi Viet Nam Tsukuba Japan

ISBN: (纸本)9781538627310

In this paper, we present a coplanar differential capacitively coupled contactless conductivity detection (CD-C4D) structure for the detection of tiny objects with dimension in micro scale. The differential capacitance changed due to the occurrence of an object in micro scale in is detected and used to recognize the presence as well as properties (i.e., electrical property and moving speed) of the object in fluidic flow. The experimental results and discussion in this paper can be generalized to any living cell or particle detection applications. © 2017 IEEE.

关键词： Object detection

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ARCADIA MAPS process qualification through the electrical characterization of passive pixel arrays

ARCADIA MAPS process qualification through the electrical ch...

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244th Electrochemical Society Meeting (ECS)

作者： Corradino, T. Betta, G. F. Dalla Neubuser, C. Pancheri, L. Univ Trento Dept Ind Engn Via Sommar 9 Trento Italy TIFPA INFN Via Sommar 14 Trento Italy

The development of novel Monolithic Active Pixel sensor (MAPS) technologies has been pursued by several collaborations in the last two decades. The ARCADIA project aims to design fully depleted MAPS for medical, space, HEP and X-ray detection applications, that can be produced with a commercial 110 nm CMOS production process. Among the test structures of the first two engineering runs of the project, passive pixel arrays with different pitches and layouts were included. The main characteristics of the produced devices in terms of dark current, depletion voltage, punch through current and pixel capacitance have been evaluated from IV and CV characteristics of the pixel arrays. Groups of four samples have been extracted from as many different positions within each wafer and electrically characterized to obtain information on the variability in the pixel operating voltage range and in the pixel dark current, reflecting variations related to the employed production process. The experimental data demonstrated a good uniformity in the considered parameters for different sample positions within the produced wafers, as well as for samples extracted from different wafers with the same substrate type.

关键词： Detector design and construction technologies and materials solid state detec-tors Detector modelling and simulations II (electric fields charge transport multiplication and induction pulse formation electron emission etc )

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