Relevant bibliographies by topics / Vacuum Sensor

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Vacuum Sensor'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Vacuum Sensor"

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Rapa, Charnia Iradat, Erick Dephtios, Chrisna Mariangga, and Naomi Patiung. "A Design And Build A Robot Vacuum Cleaner." Journal of Physics: Conference Series 2394, no. 1 (December 1, 2022): 012024. http://dx.doi.org/10.1088/1742-6596/2394/1/012024.

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Abstract In this paper design of the robot Vacum Cleaner, based on the Arduino Mega 2560 is the can walk and vacuum the floor. In this study, a microcontroller is used to regulate the work of the robot based on data obtained by six sensors, and the robot’s movement is driven by motor driver to the left and right, forward and backward, where the input is given through the keypad in the form of dust and garbage thisness, provided that if the dust thickness is (30mg)/(mm)3 then the LCD will display binary logic “1”, and if the Dust thickness is ≥0,30 mg/mm3then the data will be displayed on the LCD is binary logic “0”. In designing this robot, four ultrasonic sensors are needed as proximity sensors, also needed a sensor to detect the thickness of the dust, as well as an infrared sensor as a sensor to detect thick garbage. In testing the vacuum cleaner robot, the four ultrasonic sensors, S1, S2, S3, S4 are designed as the cardinal directions, north south, east west, as input data on the microcontroller, and two motor drivers as microcontroller outputs that can move forward and backward, forward turn left, forward turn right, backward turn left, backward turn right as an output to move the robot vacuum cleaner. When the vacuum cleaner robot moves, the dust sensor will detect dust, if the dust thickness is 0,30 mgmm3, the LCD is logic “1”, the sensor will. Work and the vacuum cleaner will sweep the flour while sucking, if the dust thickness ≥30mgmm3, infra red sensor will work with a logic LCD display logic “0”, then the motor driver will stop. The vacuum cleaner does not suck up dust or thick garbage.
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Du, Guizhen, Xianshan Dong, Xinglong Huang, Wei Su, and Peng Zhang. "Reliability Evaluation Based on Mathematical Degradation Model for Vacuum Packaged MEMS Sensor." Micromachines 13, no. 10 (October 11, 2022): 1713. http://dx.doi.org/10.3390/mi13101713.

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Vacuum packaging is used extensively in MEMS sensors for improving performance. However, the vacuum in the MEMS chamber gradually degenerates over time, which adversely affects the long-term performance of the MEMS sensor. A mathematical model for vacuum degradation is presented in this article for evaluating the degradation of vacuum packaged MEMS sensors, and a temperature-accelerated test of MEMS gyroscope with different vacuums is performed. A mathematical degradation model is developed to fit the parameters of the degradation of Q-factor over time at three different temperatures. The results indicate that the outgassing rate at 85 °C is the highest, which is 0.0531 cm2/s; the outgassing rate at 105 °C is the lowest, which is 0.0109 cm2/s; and the outgassing rate at 125 °C is in the middle, which is 0.0373 cm2/s. Due to the different mechanisms by which gas was released, the rate of degradation did not follow this rule. It will also be possible to predict the long-term reliability of vacuum packaged MEMS sensors at room temperature based on this model.
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Van Herwaarden, A. W., P. M. Sarro, and H. C. Meijer. "Integrated vacuum sensor." Sensors and Actuators 8, no. 3 (November 1985): 187–96. http://dx.doi.org/10.1016/0250-6874(85)85002-2.

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Wei, Debo, Jianyu Fu, Ruiwen Liu, Ying Hou, Chao Liu, Weibing Wang, and Dapeng Chen. "Highly Sensitive Diode-Based Micro-Pirani Vacuum Sensor with Low Power Consumption." Sensors 19, no. 1 (January 7, 2019): 188. http://dx.doi.org/10.3390/s19010188.

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Micro-Pirani vacuum sensors usually operate at hundreds of microwatts, which limits their application in battery-powered sensor systems. This paper reports a diode-based, low power consumption micro-Pirani vacuum sensor that has high sensitivity. Optimizations to the micro-Pirani vacuum sensor were made regarding two aspects. On the one hand, a greater temperature coefficient was obtained without increasing power consumption by taking advantage of series diodes; on the other hand, the sensor structure and geometries were redesigned to enlarge temperature variation. After that, the sensor was fabricated and tested. Test results indicated that the dynamic vacuum pressure range of the sensor was from 10−1 to 104 Pa when the forward bias current was as low as 10 μA with a power consumption of 50 μW. Average sensitivity was up to 90 μV/Pa and the sensitivity of unit power consumption increased to 1.8 V/W/Pa. In addition, the sensor could also work at a greater forward bias current for better sensor performance.
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Zhang, Lan, Jian Lu, Hideki Takagi, Sohei Matsumoto, and Eiji Higurashi. "An Ultra-Compact MEMS Pirani Sensor for In-Situ Pressure Distribution Monitoring." Micromachines 13, no. 10 (October 7, 2022): 1686. http://dx.doi.org/10.3390/mi13101686.

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In this study, we designed a microelectromechanical system (MEMS) Pirani vacuum sensor with a compact size. Specifically, the sensor was successfully fabricated based on the Pirani principle and using a commercial eight-inch MEMS foundry process. The sensor fabrication process was carried out using only four photomasks and the proposed sensor had an ultra-compact fabricated size (<2.2 × 2.2 mm2). A vacuum measurement system was set up to comprehensively evaluate the fabricated sensors. The results demonstrated that the MEMS Pirani vacuum sensor has a high responsivity in the low-pressure domain from 100 Pa. The proposed sensor with a 953.0-Ω heater exhibited an average responsivity of 11.9 mV/Pa in the preferred range of 100 to 7 Pa and 96.0 mV/Pa in the range of 7 to 1 Pa. The sensor may be potentially suitable in many applications, such as vacuum indicators for processing equipment, health monitoring systems for social infrastructure, and medical and health applications.
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Giebel, Friederike Julia, Marcel Köhle, Till Stramm, Klaus T. Kallis, and Horst L. Fiedler. "Concept for a MEMS-type vacuum sensor based on electrical conductivity measurements." Journal of Sensors and Sensor Systems 6, no. 2 (November 16, 2017): 367–74. http://dx.doi.org/10.5194/jsss-6-367-2017.

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Abstract. The concept of the micro-structured vacuum sensor presented in this article is the measurement of the electrical conductivity of thinned gases in order to develop a small, economical and quite a simple type of vacuum sensor. There are already some approaches for small vacuum sensors. Most of them are based on conservative measurement principles similar to those used in macroscopic vacuum gauges. Ionization gauges use additional sources of energy, like hot cathodes, ultraviolet radiation or high voltage for example, for ionizing gas molecules and thereby increasing the number of charge carriers for measuring low pressures. In contrast, the concept discussed here cannot be found in macroscopic sensor systems because it depends on the microscopic dimension of a gas volume defined by two electrodes. Here we present the concept and the production of a micro-structured vacuum sensor chip, followed by the electrical characterization. Reference measurements with electrodes at a distance of about 1 mm showed currents in the size of picoampere and a conductivity depending on ambient pressure. In comparison with these preliminary measurements, fundamental differences regarding pressure dependence of the conductivity are monitored in the electrical characterization of the micro-structured sensor chip. Finally the future perspectives of this sensor concept are discussed.
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Berlicki, T. M. "Convection–conductive vacuum sensor." Vacuum 57, no. 4 (June 2000): 413–19. http://dx.doi.org/10.1016/s0042-207x(00)00153-6.

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ISKANDARANI, MAHMOUD Z., and NIDAL F. SHILBAYEH. "DESIGN, MODELING AND IMPLEMENTATION OF PbPc SENSOR ARRAY FOR THE DETECTION OF GASES." International Journal of Information Acquisition 02, no. 03 (September 2005): 191–201. http://dx.doi.org/10.1142/s021987890500057x.

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In this paper the voltage/current characteristics and the effect of NO 2 gas on the electrical conductivity of a PbPc gas sensor array is studied. The gas sensor is manufactured using vacuum deposition of gold electrodes on sapphire substrate with the lead-phathalocyanine vacuum sublimed on the top of the gold electrodes. In a comparison between two versions of the PbPc gas sensor array, it was found that they differ in gap sizes between the deposited gold electrodes. The sensors are tested at different temperatures to account for conductivity changes as the molecular adsorption/desorption rate is affected by heat. The obtained results are found to be encouraging as the sensors showed stability and sensitivity towards low concentrations of applied NO 2 gas.
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Novikov, S., Yu N. Makarov, Heikki Helava, S. Lebedev, Andrey Lebedev, and Valeri Davydov. "Highly Sensitive NO2 Graphene Sensor Made on SiC Grown in Ta Crucible." Materials Science Forum 858 (May 2016): 1149–52. http://dx.doi.org/10.4028/www.scientific.net/msf.858.1149.

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Graphene films were grown on SiC substrates by annealing in vacuum or in Ar flow. Gas sensors based on graphene films were made and tested on response to nitrogen dioxide. Graphene film is used in the sensor. The graphene film grown by annealing in Ar flow shows superior sensitivity compared to that annealed in vacuum. Both sensors exhibit good potential for environmental research and monitoring
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Musri, Tengku, and Muhamad Nasir. "Remote Control Pada Robot Mobile Pembersih Lantai Menggunakan Smartphone Dengan Kendali Sensor Accelerometer." Jurnal Teknologi Informasi dan Terapan 5, no. 2 (April 3, 2019): 97–104. http://dx.doi.org/10.25047/jtit.v5i2.87.

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Technological developments are needed in the completion of a job both working automatically and manually with good results. In this need, a technology is used which has certain advantages in a matter. For example, a room cleaning device that is a vacuum cleaner that is often used by housewives to clean dirt and dust is used because it can ease the work, the vacuum cleaner that is currently in use by manual and automatic. This study proposes a controlling mobile vacuum cleaner by utilizing an accelerometer sensor found on a smartphone with Bluetooth communication media between robots and smartphones. An accelerometer is used to control the motion of a robot by taking changes in values from the slope angles X, Y and Z. With the vaccum cleaner robot, it is hoped that it can provide better work results in cleaning the room from dirt and dust, as well as providing convenience in controlling the vaccum cleaner robot for ordinary people. From the results of manual control trials on the robot, the accuracy of the control accuracy is 95%. The maximum range of Bluetooth signals reaches 30 meters without obstacles and there are obstacles. This vacuum cleaner robot can suck up dirt in the form of torn paper, sugar and coffee.
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Dissertations / Theses on the topic "Vacuum Sensor"

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Blomqvist, Anneli. "Millimeter Wave Radar as Navigation Sensor on Robotic Vacuum Cleaner." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288146.

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Does millimeter-wave radar have the potential to be the navigational instrument of a robotic vacuum cleaner in a home? Electrolux robotic vacuum cleaner is currently using a light sensor to navigate through the home while cleaning. Recently Texas Instruments released a new mmWave radar sensor, operating in the frequency range 60-64 GHz. This study aims to answer if the mmWave radar sensor is useful for indoor navigation. The study tests the sensor on accuracy and resolution of angles and distances in ranges relevant to indoor navigation. It tests if various objects made out of plastic, fabric, paper, metal, and wood are detectable by the sensor. At last, it tests what the sensor can see when it is moving while measuring. The radar sensor can localize the robot, but the ability to detect objects around the robot is limited. The sensor’s absolute accuracy is within 3° for the majority of angles and around 1dm for most distances above 0.5 m. The resolution for a displacement of one object is 1°, respectively 5 cm, and two objects must be located at least 14° or 15 cm apart from each other to be recognized. Future tasks include removing noise due to antenna coupling to improve reflections from within 0.5 meter and figure out the best way to move around the sensor to improve the resolution.
Har radar med millimetervågor förutsättningar att vara navigationsutrustning för en robotdammsugare i ett hem? Electrolux robotdammsugare använder för närvarande en ljussensor för att navigera genom hemmet medan den städar. Nyligen släppte Texas Instruments en ny radarsensor med vågor i frekvensområdet 60-64 GHz. Denna studie syftar till att svara om radarsensorn är användbar för inomhusnavigering. Studien testar sensorn med avseende på noggrannhet och upplösning av vinklar och avstånd i områden som är relevanta för inomhusnavigering. Den testar om olika föremål tillverkade av plast, tyg, papper, metall och trä kan detekteras av sensorn. Slutligen testas vad sensorn kan se om den rör sig medan den mäter. Radarsensorn kan positionera roboten, men hinderdetektering omkring roboten är begränsad. För det mesta ligger sensorns absoluta noggrannhet inom 3° för vinklar och omkring 1dm för avstånd över 0,5 m. Upplösningen för en förflyttning av ett objekt är 1° respektive 5 cm, och två objekt måste placeras minst 14° eller 15 cm ifrån varandra för att båda kunna upptäckas. Kommande utmaningar är att ta bort antennstörningar som ger sämre reflektioner inom 0,5 meter och ta reda på det bästa sättet att förflytta sensorn för att förbättra upplösningen.
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Antelius, Mikael. "Wafer-scale Vacuum and Liquid Packaging Concepts for an Optical Thin-film Gas Sensor." Doctoral thesis, KTH, Mikro- och nanosystemteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119839.

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This thesis treats the development of packaging and integration methods for the cost-efficient encapsulation and packaging of microelectromechanical (MEMS) devices. The packaging of MEMS devices is often more costly than the device itself, partly because the packaging can be crucial for the performance of the device. For devices which contain liquids or needs to be enclosed in a vacuum, the packaging can account for up to 80% of the total cost of the device. The first part of this thesis presents the integration scheme for an optical dye thin film NO2-gas sensor, designed using cost-efficient implementations of wafer-scale methods. This work includes design and fabrication of photonic subcomponents in addition to the main effort of integration and packaging of the dye-film. A specific proof of concept target was for NO2 monitoring in a car tunnel. The second part of this thesis deals with the wafer-scale packaging methods developed for the sensing device. The developed packaging method, based on low-temperature plastic deformation of gold sealing structures, is further demonstrated as a generic method for other hermetic liquid and vacuum packaging applications. In the developed packaging methods, the mechanically squeezed gold sealing material is both electroplated microstruc- tures and wire bonded stud bumps. The electroplated rings act like a more hermetic version of rubber sealing rings while compressed in conjunction with a cavity forming wafer bonding process. The stud bump sealing processes is on the other hand applied on completed cavities with narrow access ports, to seal either a vacuum or liquid inside the cavities at room temperature. Additionally, the resulting hermeticity of primarily the vacuum sealing methods is thoroughly investigated. Two of the sealing methods presented require permanent mechanical fixation in order to complete the packaging process. Two solutions to this problem are presented in this thesis. First, a more traditional wafer bonding method using tin-soldering is demonstrated. Second, a novel full-wafer epoxy underfill-process using a microfluidic distribution network is demonstrated using a room temperature process.

QC 20130325

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Domenegueti, José Francisco Miras. "Sensor de umidade e vácuo baseado na reflexão interna." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-09092014-113655/.

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No presente trabalho propomos a utilização de uma técnica refratométrica baseada na determinação do ângulo crítico para o desenvolvimento de um sensor de umidade relativa e, no mesmo escopo de aplicação, um medidor de vácuo primário. A técnica proposta tira vantagem da diferença de fase adquirida pelas componentes paralela e perpendicular de um feixe luminoso, linearmente polarizado, passando por reflexão interna, para produzir um laser de HeNe sintonizável, um polarizador, um prisma semicilíndrico de índice de refração conhecido fabricado em vidro tipo flint, um analisador, um mínimo de intensidade, facilmente detectável no perfil refletido correspondendo à posição do ângulo crítico. Desenvolvemos um estudo acerca dos principais aspectos teóricos envolvidos no fenômeno da reflexão total interna, onde realizamos algumas simulações buscando avaliar as variações da posição angular do ângulo crítico a partir de alterações no índice de refração. A montagem básica utilizada nos experimentos consiste de um CCD linear e de um computador, onde as informações coletadas pelo CCD foram tratadas por meio de um programa de aquisição de dados desenvolvido na plataforma LabVIEWTM. O programa empregado permite o acompanhamento das variações do perfil refletido da base do prisma ponto a ponto, ou seja, é possível acompanhar toda a dinâmica de evolução do índice de refração da amostra analisada em tempo real. Para confirmação da efetividade da técnica, realizamos medidas da variação do índice de refração de amostras gasosas em função da umidade relativa e da pressão. O sistema demonstrou sensibilidade suficiente para acompanhar mudanças da ordem de 10-5em unidades do índice de refração.
In the present work we propose the use of a refractometric technique based on the determination of the critical angle for the development of a relative humidity sensor and, in the same application scope, a primary vacuum gauge. The proposed technique takes advantage of the phase difference acquired by the parallel and perpendicular components of a, linearly polarized, light beam undergoing internal reflection, to produce an easily detectable intensity minimum in the reflected profile corresponding to the position of the critical angle. We develop a study about the main theoretical aspects involved in the total internal reflection phenomenon, where we perform some simulations aiming to evaluate the variations of the critical angle angular position from changes on the refractive index. The basic set up used in the experiments consist of a HeNe tunable laser, a polarizer, a semi-cylindrical prism with known refractive index made of flint glass type, a analyzer, a linear CCD and a computer, where the information collected by de CCD were treated by means of a data acquisition program developed on the LabVIEWTM platform. The used program allows the point-by-point monitoring of the changes of the profile reflected from the prism base, in other words, one can monitor all the evolution dynamics of the refractive index of the analyzed sample in real time. To confirm the effectiveness of the technique, we perform measurements of changes of the refractive index of gaseous samples as function of the relative humidity and the pressure. The system has shown enough sensitivity to track changes of the order of 10-5 in units of the index of refraction.
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Beermann, Rüdiger [Verfasser]. "Structured Light Sensor with Affine Stereo Camera Pair for Geometry Measurements of High-Temperature Components in Rough Vacuum / Rüdiger Beermann." Garbsen : TEWISS - Technik und Wissen GmbH, 2021. http://d-nb.info/1229012583/34.

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Schäfer-Nolte, Eike Oliver [Verfasser], and Jörg [Akademischer Betreuer] Wrachtrup. "Development of a diamond-based scanning probe spin sensor operating at low temperature in ultra high vacuum / Eike Oliver Schäfer-Nolte. Betreuer: Jörg Wrachtrup." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2014. http://d-nb.info/1052894151/34.

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Ricci, Francesco 1987. "Levitodynamics toward force nano-sensors in vacuum." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/666188.

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Levitodynamics addresses the levitation and manipulation of micro- and nanoresonators with the purpose of studying their dynamics. This emerging field has attracted much attention over the last few years owing to unprecedented performances in terms of mechanical quality factors, cooling rates at room temperature, and ultra-high force sensitivities. In this thesis, I establish the use of an optically levitated and electrically driven charged silica nanoparticle as a promising and reliable force sensor in vacuum. The first two experiments discussed in this work seek a deeper knowledge and a higher control of the levitated system. Firstly, I suggest and demonstrate a novel protocol to measure the mass of the particle up to 2% accuracy using its electrically driven motion. This method improves by more than one order of magnitude the state-of-the-art mass measurements in standard optical tweezers schemes. Then, leveraging on these results, a second experiment is performed to address important open issues regarding the morphology of the nanoparticles used, with particular interest in their surface chemistry and in the understanding of mass-losses due to water desorption from the silica spheres. Finally, backed up by extensive theoretical background in nonlinear mechanical oscillators, I investigate the stochastic bistable dynamics of a parametrically driven nanoresonator in the nonlinear regime, discussing the potential of noise-activated stochastic switching and stochastic resonance as unconventional force detection schemes.
La levitodinámica estudia la manipulación de micro y nanorresonadores en levitación con el objetivo de controlar su dinámica. Este nuevo campo ha atraído mucha atención en los últimos años gracias a sus prestaciones sin precedentes en términos de factores de calidad mecánica, posibilidad de enfriamiento del centro de masas a temperatura ambiente y altas sensibilidades en la detección de fuerzas. En esta tesis, establezco un sensor de fuerza basado en el uso de una nanopartícula de sílice levitada ópticamente en el vacío que, gracias a su carga, puede ser accionada mediante campos eléctricos. Los dos primeros experimentos discutidos en este trabajo intentan conseguir un conocimiento más profundo y un mayor control del sistema levitado. En primer lugar, se propone y demuestra un nuevo protocolo para la medida de la masa de la partícula en levitación con una precisión del 2% basado en el estudio de la dinámica forzada cuando la partícula es accionada eléctricamente. Este método mejora en más de un orden de magnitud las mediciones de la masa de la partícula en plataformas de pinzas ópticas estándar. Aprovechando este desarrollo, se realiza un segundo experimento para estudiar importantes problemas relacionados con las propiedades físicas y químicas de las nanopartículas utilizadas, con especial interés en su química superficial y en la comprensión de las pérdidas de masa onbservadas debidas a la desorción de agua de las esferas de sílice. Finalmente, gracias a una amplia base teórica en osciladores mecánicos no lineales, investigo la dinámica estocástica biestable de un nanoresonador accionado paramétricamente en el régimen no lineal, discutiendo el potencial de las transiciones estocásticas activadas por ruido externo y la resonancia estocástica como esquemas de detección de fuerza no convencionales.
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Torunbalci, Mert Mustafa. "Wafer Level Vacuum Packaging Of Mems Sensors And Resonators." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613015/index.pdf.

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This thesis presents the development of wafer level vacuum packaging processes using Au-Si eutectic and glass frit bonding contributing to the improvement of packaging concepts for a variety of MEMS devices. In the first phase of this research, micromachined resonators and pirani vacuum gauges are designed for the evaluation of the vacuum package performance. These designs are verified using MATLAB and Coventorware finite element modeling tool. Designed resonators and pirani vacuum gauges and previously developed gyroscopes with lateral feedthroughs are fabricated with a newly developed Silicon-On-Glass (SOG) process. In addition to these, a process for the fabrication of similar devices with vertical feedthroughs is initiated for achieving simplified packaging process and lower parasitic capacitances. Cap wafers for both types of devices with lateral and vertical feedthroughs are designed and fabricated. The optimization of Au-Si eutectic bonding is carried out on both planar and non-planar surfaces. The bonding quality is evaluated using the deflection test, which is based on the deflection of a thinned diaphragm due to the pressure difference between inside and outside the package. A 100% yield bonding on planar surfaces is achieved at 390º
C with a v holding time and bond force of 60 min and 1500 N, respectively. On the other hand, bonding on surfaces where 0.15&mu
m feedthrough lines exist can be done at 420º
C with a 100% yield using same holding time and bond force. Furthermore, glass frit bonding on glass wafers with lateral feedthroughs is performed at temperatures between 435-450º
C using different holding periods and bond forces. The yield is varied from %33 to %99.4 depending on the process parameters. The fabricated devices are wafer level vacuum packaged using the optimized glass frit and Au-Si eutectic bonding recipes. The performances of wafer level packages are evaluated using the integrated gyroscopes, resonators, and pirani vacuum gauges. Pressures ranging from 10 mTorr to 60 mTorr and 0.1 Torr to 0.7 Torr are observed in the glass frit packages, satisfying the requirements of various MEMS devices in the literature. It is also optically verified that Au-Si eutectic packages result in vacuum cavities, and further study is needed to quantify the vacuum level with vacuum sensors based on the resonating structures and pirani vacuum gauges.
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Bergman, Joel, and Johan Lind. "Robot Vacuum cleaner." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264502.

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Although a robot vacuum cleaner is a well-known product, development is still interesting. Better working sensors and more sophisticated algorithms and sensors are used in new cleaners. The purpose with this thesis was to learn more about different sensors, algorithms, and designs of robot vacuum cleaners, to try ideas and to find improvements to implement on the demonstrator. The initial work was to make a market investigation to find customer needs and expectations. Also making a rough design and layout for the mechanical and electrical system. The budget for the demonstrator was 1000 SEK. Using laser cut plastic sheets, 3D printed parts, and receiving motors for free, costs did not exceed budget. Literature and theses in the area of interest were studied to find answers to some of the research questions. The theses studied subjects such as driving pattern and designs to find back to charge station. Some ideas for driving patterns were implemented on a demonstrator. The development method used was iteration of finding useful information, testing components, codes and also the complete demonstrator. The components used were DC motor, stepper motors, ultrasonic sensors, Arduino mega micro controller, switches and AA batteries. The different components required different voltage and the stepper motors used driver cards.
Även om robot dammsugare är en välkänd produkt är produktutveckling fortfarande intressant. Bättre sensorer och mer sofistikerade algoritmer och sensorer används i dammsugare. Syftet med denna avhandling var att lära sig mer om olika dammsugare, algoritmer och konstruktioner av robot dammsugare, för att prova idéer och möjliga hitta förbättringar att implementera på demonstranten. Det första arbetet var att göra en marknadsundersökning för att hitta kundens behov och förväntningar. Även att göra en grov design och layout för det mekaniska och elektriska systemet. Budgeteringen för demonstranten var 1000 kr. Kostnaderna översteg inte budgeten eftersom vi använde oss av laser skurna plastplattor, 3D-printade delar och erhöll motorer utan kostnad. Sex olika avhandlingar studerades för att hitta svar på några av frågorna. Avhandlingarna studerade ämnen som körmönster och mönster för att hitta tillbaka till laddstationen. Vissa idéer för körmönster implementerades på demonstranten. Den använda utvecklingsmetoden var iteration av att hitta användbar information, testa komponenter, koder och även den fullständiga demonstranten. De komponenter som användes var likströmsmotor, stegmotorer, ultraljudssensorer, Arduino mega-mikrokontroller, strömbrytare och AA-batterier. De olika komponenterna krävde olika spänningar och stegmotorn använder ett specifikt drivkort.
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Stevens, Amy Victoria. "Novel solid electrolyte sensors for the selective detection of hydrocarbons in vacuum." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608728.

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Silva, Elisabeth Mary Cunha da. "Chemical and sensory investigations on the processing and preservation of a lamb product." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324852.

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Books on the topic "Vacuum Sensor"

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Sensory Evaluation,Livestock,Meat,Poultry,Evaluation Systems,Vacuum Cleaners,Security Systems,Detention & Correctional Facilities; Food Service. American Society for Testing & Materials (ASTM), 2005.

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Deruelle, Nathalie, and Jean-Philippe Uzan. Electromagnetic waves. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0033.

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This chapter examines solutions to the Maxwell equations in a vacuum: monochromatic plane waves and their polarizations, plane waves, and the motion of a charge in the field of a wave (which is the principle upon which particle detection is based). A plane wave is a solution of the vacuum Maxwell equations which depends on only one of the Cartesian spatial coordinates. The monochromatic plane waves form a basis (in the sense of distributions, because they are not square-integrable) in which any solution of the vacuum Maxwell equations can be expanded. The chapter concludes by giving the conditions for the geometrical optics limit. It also establishes the connection between electromagnetic waves and the kinematic description of light discussed in Book 1.
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Sensory Evaluation; Vacuum Cleaners; Security Systems; Detention Facilities; Food Service Equipment (Annual Book of Astm Standards 2002). Astm Intl, 2002.

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ASTM. Sensory Evaluation; Vacuum Cleaners; Security Systems; Detention Facilities; Food Service Equipment (Annual Book of a S T M Standards Volume 1508). Astm Intl, 2000.

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Sensory Evaluation; Vacuum Cleaners; Security Systems; Detention Facilities; Food Service Equipment (Annual Book of a S T M Standards Volume 1508). Astm Intl, 2001.

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Sensory Evaluation; Vacuum Cleaners; Security Systems; Detention Facilities; Food Service Equipment (Annual Book of a S T M Standards Volume 1508). Astm Intl, 2002.

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Wood, David. Deep Time, Dark Times. Fordham University Press, 2018. http://dx.doi.org/10.5422/fordham/9780823281367.001.0001.

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Deep Time, Dark Times takes its bearing from Nietzsche’s concern that a surfeit of history can extinguish the passion for life, especially when we are reminded of our capacity for cruelty and folly. The prospect of devastating climate change extends our sense of the past onto a geological scale, arousing debilitating passion, especially anger, ressentiment and resignation. What can Nietzsche teach us here? Hume’s sense that reason is but a slave to the passions cautions us against new utopian blueprints that fail to address the mood of today. Although climate change can rightly be laid at the feet of industrialization, corporate greed, fossil fuel companies … Deep Time challenges us to re-imagine ourselves as a species, through a geological consciousness. This expands Nietzsche’s sense of “life” to include our fellow terrestrials, and accentuates his sense of critical history, navigating between conflicting passions. Such a consciousness would be ecological (embracing yet another wound to our sovereignty), and it would acknowledge the advent of the Anthropocene. Deep Time draws on Heidegger’s call for a new attunement, one that connects contemporary anger and frustration with the agency vacuum created by the failure of global democracy. The question of who “we” are, when we imagine emergent forms of agency, or when we consider the constituencies impacted by climate change, is explicitly thematized. Information technology, for all its liabilities, offers new possibilities of group identity-formation, communication, and economic transaction that just might make a difference. We have to will the impossible to avoid the unthinkable.
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Chignell, Andrew P., ed. Evil. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199915453.001.0001.

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What, if anything, is evil? Is it just badness by another name? Is it the shadow side of good, or is it an active force opposed to the good in a Manichean/Star Wars kind of way? Does evil have its source in something personal—a malevolent, striving will that makes the universe tend not just to entropic winding-down but also to outbreaks of targeted hellishness? These are some of the main ontological questions that philosophers raise about evil. There are related epistemological questions: Can we really know evil? Does a victim know evil in a way that is entirely different from the way a perpetrator or witness knows it? Does a perpetrator know evil as evil at all? There are also psychological questions: what motivates people to perpetrate evil? Satan’s rebellion, Iago’s machinations, and Stalin’s gulags might be hard to grasp. But what about less remarkable evils: Can we make sense of how former vacuum oil salesman Adolf Eichmann could regard himself as an effective bureaucrat? And what about structural and symbolic evils—can they be explained in terms of actions on the part of individuals? In Evil: A History, 13original essays tell the story of the concept of evil in the west, starting with its origins in early Hebrew wisdom literature and ending with evolutionary theory and the Holocaust. 13 Reflections contextualize these developments by considering evil through the eyes of poets, mystics, witches, librettists, directors, livestock, and a Google product manager.
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Book chapters on the topic "Vacuum Sensor"

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Gusev, A. L., V. M. Belousov, I. V. Bacherikova, L. V. Lyashenko, and E. V. Rozhkova. "Hydrogen Sensor for Cryogenic Vacuum Objects." In Hydrogen Materials Science and Chemistry of Metal Hydrides, 41–47. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0558-6_5.

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Guindi, Rafik S. "An HDL Model for A Vacuum -Sealed Micromachined Pressure Sensor." In The Kluwer International Series in Engineering and Computer Science, 429–39. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0351-4_39.

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Eum, Soohyum, Kazuro Kageyama, Hideaki Murayama, Kiyoshi Uzawa, Isamu Osawa, Makoto Kanai, and Hirotaka Igawa. "Process and Health Monitoring Using Fiber Bragg Grating Distributed Sensor for Vacuum Infusion Process." In Experimental Analysis of Nano and Engineering Materials and Structures, 113–14. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_55.

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Tonezzer, M., G. Maggioni, M. Melegari, and E. Dalcanale. "Novel Vacuum Evaporated Cavitand Sensors for Detecting Very Low Alcohol Concentrations." In Lecture Notes in Electrical Engineering, 161–64. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3606-3_29.

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"Vacuum Sensors." In Measurement and Safety, 1259–73. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315370330-106.

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"Vacuum Measurement." In Measurement, Instrumentation, and Sensors Handbook, 633–54. CRC Press, 2018. http://dx.doi.org/10.1201/9781315217109-52.

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Goehner, Ron, Emil Drubetsky, Howard Brady, and William Bayles Jr. "Vacuum Measurement." In Measurement, Instrumentation, and Sensors Handbook, Second Edition, 1–21. CRC Press, 2014. http://dx.doi.org/10.1201/b15474-45.

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van Santen, Rutger, Djan Khoe, and Bram Vermeer. "Advanced Machines." In 2030. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195377170.003.0025.

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What looks like a cake tin on wheels is working its way around the room. The robot vacuum cleaner is just as noisy as a normal one, but there’s an important difference: You don’t have to lift a finger to clean your floor. The dirt collects inside the robot’s body, swept up industriously by the rotating brushes and sucked in by the motor. The machine’s sensor flickers over the spot where some bread crumbs just fell, telling it that this is an especially dirty place, which requires an extra sweep for good measure. At the edge of the stairs, the cake tin detects the drop and changes course in the nick of time. Having surveyed the room three times, the robot concludes that its job is done. Everything is clean. No more arguing over who has to vacuum the floor. Let the machine do the work while you sit in a comfortable chair, maybe with another robot for a pet. You can already buy devices like this for a couple of hundred dollars. In fact, much of the Industrial Revolution is about machines working for us. That has dramatically changed productivity and labor. In our households, too, we have a number of machines that do the work for us. Examples are our washing machines and dryers. But for as long as machines have existed, we have dreamed of robots that could take over more tedious chores—metal people who would obey our every order and do our work for us—open the door, boil the potatoes, fix the car. It’s no coincidence that robot derives from the word for “work” in most of the Slavic languages. Robots spark fantasies of large factories full of metal workers lifting boxes, toiling on the production line, and designing new products at their drawing boards. These are some serious toys. They extend our human capacities in much the same way as all the other tools we have developed in the course of our history. Some are already in use in our daily lives, including ones that make independent and crucial decisions without seeking our input.
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Gottwald, Alexander, and Frank Scholze. "Advanced silicon radiation detectors in the vacuum ultraviolet and the extreme ultraviolet spectral range." In Smart Sensors and MEMs, 151–70. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-08-102055-5.00007-3.

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Song, Li, Tao Zhang, Fu Chen, Shiwei Zhai, and Chongshu Sun. "Design and Research of Restaurant Intelligent Cleaning Robot." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220212.

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The restaurant intelligent cleaning robot, belongs to the field of robot technology, including driving the base, control the body and vision system. Mechanical arms are installed on both sides of the top of the machine body. One of the bottom end of the robot arm is installed with clamping claws, and the other mechanical arm bottom is installed with Clean hands for desktop cleaning. Driving wheels are symmetrically arranged on both sides of the bottom surface of the base, the body internal top installed vacuuming assembly, vacuuming components of the vacuum port through the pipe to connect the vacuum cover. Combined with lidar and other sensors, it can achieve automatic identification, automatic cleaning, multi-use, flexible movement. It also can reduce the probability of collision tables and chairs, the use of higher reliability, more convenient.
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Conference papers on the topic "Vacuum Sensor"

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Sami, Sriram, Yimin Dai, Sean Rui Xiang Tan, Nirupam Roy, and Jun Han. "Spying with your robot vacuum cleaner." In SenSys '20: The 18th ACM Conference on Embedded Networked Sensor Systems. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3384419.3430781.

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Doms, M., and J. Muller. "A Micromachined Vapor-Jet Vacuum Pump." In TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2007. http://dx.doi.org/10.1109/sensor.2007.4300660.

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Klaassen, E. H., and G. T. A. Kovacs. "Integrated Thermal Conductivity Vacuum Sensor." In 1996 Solid-State, Actuators, and Microsystems Workshop. San Diego, CA USA: Transducer Research Foundation, Inc., 1996. http://dx.doi.org/10.31438/trf.hh1996.56.

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Klaassen, E. H., and G. T. A. Kovacs. "Integrated Thermal Conductivity Vacuum Sensor." In 1996 Solid-State, Actuators, and Microsystems Workshop. San Diego, CA USA: Transducer Research Foundation, Inc., 1996. http://dx.doi.org/10.31438/trf.hh1996.56.

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Baker, C., M.-A. Schwab, R. Moseley, R. R. A. Syms, and E. M. Yeatman. "Monolithic MEMS vacuum valves for miniature chemical preconcentrators." In TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2009. http://dx.doi.org/10.1109/sensor.2009.5285700.

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Papendorp, Sky, Olukayode Iyun, Christian Schneider, Ayse Tekes, Turaj Ashuri, and Amir Ali Amiri Moghadam. "Development of 3d Printed Soft Pneumatic Hand Motion Sensors." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-94580.

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Abstract This paper reports on the design, fabrication, and evaluation of a novel 3D printed vacuum based soft sensor and its application as hand motion sensor. Soft sensors are an integral part of soft robotics as an emerging field of science that enables safe and easy human to machine interaction. The conventional sensors used to interface with humans in robotic systems are mechanically incompliant. Because of this mechanical compliance mismatch, these sensors cause unsafe interactions with humans. Recent advancements in 3D printing technology have allowed fabrication of complex geometries with soft polymers, perfect for more delicate and user-friendly sensors. While the existing soft pneumatic sensors work based on the positive pressure due to deformation, the proposed sensor in this work works based on vacuum due to deformation. In comparison with the similar positive pressure sensor, our vacuum-based sensor is much softer and has minimum interference with hand motion. Finite element analysis (FEA) is used to analyze the design. Also, a kinematic model of the hand is developed using Matlab to visualize the hand motion based on the sensor data. This could show the potential application of the soft hand motion sensor in virtual reality and telehealth.
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Janosek, Michal, Michal Dressler, and Elda Saunderson. "Stabilized magnetic vacuum using a rotating fluxgate sensor." In 2020 IEEE SENSORS. IEEE, 2020. http://dx.doi.org/10.1109/sensors47125.2020.9278793.

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Shaojie Wang and Yongjian Feng. "Micro capacitive vacuum sensor based on MEMS." In 2010 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS 2010). IEEE, 2010. http://dx.doi.org/10.1109/nems.2010.5592532.

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Nicolay, P., O. Elmazria, F. Sarry, L. Bouvot, H. Kambara, K. J. Singh, and P. Alnot. "SAW pressure sensor for vacuum control applications." In 2009 Joint Meeting of the European Frequency and Time Forum (EFTF'09) and the IEEE International Frequency Control Symposium (FCS'09). IEEE, 2009. http://dx.doi.org/10.1109/freq.2009.5168151.

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"Vacuum Microelectronic Pressure Sensor with Novel Cathode." In 10th International Conference on Vacuum Microelectronics. IEEE, 1997. http://dx.doi.org/10.1109/ivmc.1997.627669.

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Reports on the topic "Vacuum Sensor"

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Zavadil, K. R., G. T. Cordes, M. J. Kelly, and T. R. Guilinger. Evaluation of the porous silicon capacitor as a moisture sensor for vacuum applications. Office of Scientific and Technical Information (OSTI), October 1996. http://dx.doi.org/10.2172/399681.

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Taylor. L51755 Development and Testing of an Advanced Technology Vibration Transmission. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), July 1996. http://dx.doi.org/10.55274/r0010124.

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Fiber optic sensors have been under development in industrial and government laboratories around the world for over a decade. The commercial market for fiber sensors for measuring parameters such as temperature, displacement, and liquid level is now estimated to exceed $100 M/year. Aside from the commercial interest, the U. S. Department of Defense has vigorously pursued the development of fiber gyroscopes and hydrophones. In spite of the high level of research and development activity, however, until recently fiber sensors had not been successfully applied in high-temperature engine environments. The goal of this effort is to develop and test high-temperature fiber optic sensors and show that they are suitable for monitoring vibration and other instabilities in gas turbine engines. The underlying technology developed during the course of PRCI projects PR- 219-9120 and PR-219-9225 during 1991-94 serves as the foundation for PR-240-9416. Transducers with the fiber optic Fabry-Perot interferometer (FFPI) configuration have been adapted for use in the turbomachinery environment.To ensure the survival of the FFPI sensors at high temperatures, two techniques for coating the fibers with metal have been developed: electroplating and vacuum deposition. Coated sensors have subsequently been embedded in aluminum and brass alloys. Experiments on a small Sargent Welch turbine engine have shown the high sensitivity of embedded FFPI strain sensors to vibration in rolling bearings. Data have been collected in both the time and frequency domain. A new accelerometer design in which a metal-coated fiber containing the FFPI element is soldered directly to a diaphragm in a stainless steel housing shows response similar to a piezoelectric accelerometer in shaker table tests. The high sensitivity of the FFPI accelerometer has been demonstrated in field tests in a Solar Centaur turbine engine, and the design has survived temperatures greater than 500�C in a test oven. A magnetometer with a physical configuration similar to that of the accelerometer has been used to measure the distance from the sensor head to a rotating shaft made of ferromagnetic material. This device, which functions as a proximity probe, has been used to monitor shaft rotation rate (keyphasor application) and as a shaft thrust position sensor. These results indicate the potential for performing critical measurements in turbine engines with FFPI sensors. They can measure acceleration, distance (proximity), strain (as it relates to bearing defect diagnosis), and gas pressure, and can operate at higher temperatures than conventional transducers.
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Siegal, M. P., J. P. Sullivan, D. R. Tallant, R. L. Simpson, N. J. DiNardo, T. W. Mercer, and L. J. Martinez-Miranda. Cold-Cathodes for Sensors and Vacuum Microelectronics. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/654180.

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Roach, Dennis. Performance Evaluation of Comparative Vacuum Monitoring and Piezoelectric Sensors for Structural Health Monitoring of Rotorcraft Components. Office of Scientific and Technical Information (OSTI), July 2021. http://dx.doi.org/10.2172/1809128.

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Roach, Dennis. Application and Certification of Comparative Vacuum Monitoring Sensors for Structural Health Monitoring of 737 Wing Box Fittings. Office of Scientific and Technical Information (OSTI), September 2020. http://dx.doi.org/10.2172/1660800.

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Improving the counseling and medical care of postabortion patients in Egypt. Population Council, 1995. http://dx.doi.org/10.31899/rh1995.1026.

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This pilot study conducted in Cairo and Minya examined the effects of improving the medical care and counseling of post-abortion patients in Egypt. A pre-test/post-test, no control group study design was used to measure the effects of an intervention that upgraded physicians' clinical and interpersonal communication skills for the care of post-abortion patients, including counseling and family planning (FP). The study's surveys utilized direct interviews with staff working in the OB/GYN wards, structured observations of treatment procedures and counseling of post-abortion patients, and interviews with patients prior to discharge. Changes in the clinical management of post-abortion patients were introduced through a five-day training program in each hospital for senior staff, who then trained junior colleagues individually. Training for nurses and other paramedical personnel was also provided. Results demonstrate that the use of vacuum aspiration for treating post-abortion patients offers significant potential benefits for women, service providers, and the health care system. As this report states, the challenge now is to consolidate the experience gained from this study and develop a larger-scale introduction program in Egypt for the use of vacuum aspiration, combined with minimal pain-control medication and improved counseling.
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Egypt: Expand access to postabortion care. Population Council, 2000. http://dx.doi.org/10.31899/rh2000.1023.

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The Population Council has supported a series of studies to improve the quality of postabortion care (PAC) in Egypt. A 1994 pilot study in two Egyptian hospitals showed that upgrading PAC and training physicians in manual vacuum aspiration (MVA), infection control, and counseling led to significant improvements in the care of postabortion patients. The 1997 study, conducted by the Egyptian Fertility Care Society with support from the Population Council, sought to institutionalize improved postabortion medical care and counseling procedures in ten hospitals. Five senior physicians from each hospital attended a five-day training course in MVA, infection control, and family planning (FP) counseling. The physicians then supervised four months of on-the-job training of doctors and nurses at the ten hospitals. A case management protocol, including emergency medical treatment, pain control, and FP counseling, was also introduced. As reported in this brief, training providers and introducing a case management protocol led to improved PAC at ten government and teaching hospitals in Egypt.
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