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Showing 1 to 20 of 102 for “"Pressure sensor"”.
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Silicon field emission pressure sensor
… of field emission emitters in two novel pressure sensors. One is based on a diode structure with one electrode fabricated on a pressure sensitive thin diaphragm. The other has two tip-to-tip cantilever beam emitters with a small gap between tips. Both cone-shape and wedge-shape emitters …
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Optical Fiber Tip Pressure Sensor
Miniature pressure sensors which can endure harsh environments are a highly sought after goal in industrial, medical and research fields. Microelectromechanical systems (MEMS) are the current methods to fabricate such small sensors. However, they suffer from low sensitivity and poor mechanical …
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Nanowire Zinc Oxide MOSFET Pressure Sensor
Fabrication and characterization of a new kind of pressure sensor using self-assembly Zinc Oxide (ZnO) nanowires on top of the gate of a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) is presented. Self-assembly ZnO nanowires were fabricated with a diameter of 80 nm and 800 nm height …
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Silicon piezoresistors for MEMS pressure sensor applications
… including a range of physical and environmental sensors. Pressure sensors are used for a wide range of monitoring and control applications, e.g. environmental, industrial, aircraft, automotive. Monitoring of vehicle tyre pressures offers benefits such as improved safety, fuel economy, and tyre …
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Silicon pressure sensor using wafer bonding technology
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Fiber Optic Pressure Sensor Fabrication Using MEMS Technology
A technology for fabricating fiber optic pressure sensors is described. This technology is based on intermediate-layer bonding of a fused silica ferrule to a patterned, micro-machined fused silica diaphragm, providing low temperature fabrication of optical pressure sensor heads that can operate at …
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A laser plantar pressure sensor for the diabetic foot
… concerned with the design and building of a foot pressure system capable of measuring the pressure distribution underneath the diabetic foot. The system is developed to have a higher resolution and be more cost-effective than existing commercial systems.<br/><br/>The biomechanics of the foot and …
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Development of a Miniature, Fiber-optic Temperature Compensated Pressure Sensor
… of physical parameters (such as temperature and pressure) in extremely harsh environment is one of the most intriguing challenges of this field, and is highly valued in the automobile industry, aerospace research, industrial process monitoring, etc. [2]. Although the semiconductor based sensors …
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Fibre optic pressure sensor for downhole monitoring in the oil industry
… average for North Sea oil-wells.<br/>Fibre-optic sensors have the potential to measure many downhole parameters. However, high-temperature, high-pressure (HTHP) fluids are shown to have adverse effects on fibre pressure-sensors and cables. All unprotected, silica-fibre, pressure sensors drift in …
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A wearable blood pressure sensor using oscillometric photoplethysmography and micro accelerometers
Monitoring arterial blood pressure (ABP) with a sensor virtually imperceptible to the wearer, for continuous periods of weeks, months, or years, could prove revolutionary in the diagnosis and treatment of chronic hypertension and heart failure, as well as a monitoring tool for convalescing …
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A flexible underwater pressure sensor array for artificial lateral line applications
… develops a flexible elastomer-based underwater pressure sensor array. When mounted onto the hull of an aquatic vehicle, the array enables obstacle detection, identification and tracking, and can help the vehicle reduce its hydrodynamic drag by providing information about the surrounding ow. This …
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Development of bio-inspired distributed pressure sensor arrays for hydrodynamic sensing applications
… for inspiration, fish employ the distributed pressure and velocity sensing capability of their lateral line sensory organ to mediate navigation and control behaviors that, if replicated, could benefit engineered systems. Through a series of towing tank and field experiments, it was found that …
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Design and development of a distributed planar pressure sensor utilising electrical impedance tomography.
… used in conjunction with a flexible conductive sensor for the measurement of distributed pressure. The main application areas are for the constant monitoring of the pressure distribution between a patient and their support surface i.e. beds and wheel chairs, in order to reduce the formation of …
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Finite element simulation and parameter optimization of a flexible tactile pressure sensor array
… to optimize design of a flexible tactile sensor. The sensor consists of layers of thin-film copper and PDMS, and the model can be used to determine the effects on sensor sensitivity and durability of variations in material properties and geometry. The model was used to study the effect of …
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Modeling the Thermal Performance of an Intelligent MEMS Pressure Sensor with Self-Calibration Capabilities
… have increased the demand for more reliable pressure sensors. One of the best methods to ensure reliability is by regularly calibrating the sensor, checking its functionality and accuracy. By integrating a micro-actuator with a pressure sensor, the sensor can self-calibrate, eliminating the …
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Development of a Self-Calibrating MEMS Pressure Sensor Using a Liquid-to-Vapor Phase Change
A growing industry demand for smart pressure sensors that can be quickly calibrated to compensate for sensor drift, nonlinearity effects, and hysteresis without the need for expensive equipment has led to the development of a self-calibrating pressure sensor. Pressure sensor inaccuracies are often …
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The Testing and Verification of a Nanomembrane Based Pressure Sensor for Small-Scale Underwater Pressure Measurements
A MEMS piezoresistive pressure sensor provides a low-cost and accurate means of detecting and quantifying small-scale disturbances in underwater environments. A highly sensitive MEMS pressure sensor has been developed that can be packaged in two different ways – one in a cylindrical housing, and …
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Design and fabrication of a prototype aluminum nitride-based pressure sensor with finite element analysis and validation
… surgeons remain deficient, especially for the pressure sensing which plays an important role. Inspired by our previous work on bacterial sensing, in the current work I have designed, fabricated, analyzed, and evaluated an innovative prototype pressure sensor based on Aluminum Nitride (AlN) …
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