Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"capacitive probe"”.
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A nano-stepping robotic instrumentation platform
… are examined. A novel, high-resolution capacitive probe concept is detailed and characterized as an example of an inexpensive, low-power, sensor technology with which an ANT may be equipped to perform scanning probe microscopy. Several positioning schemes are discussed, including a …
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Non-uniform emission studies of a magnetron injection gun
… fabrication, and testing in the gyrotron of a capacitive probe system divided into four quadrants to measure azimuthal asymmetries of the electron beam; Use of the capacitive probes to measure low-frequency (100 - 160 MHz) oscillations on the beam, the first measurement of such oscillations in …
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HIGH-SPEED ROTOR TIP CLEARANCE MEASUREMENTS IN A TRANSONIC COMPRESSOR
… creation, and use of two benchtop rigs with a capacitive proximity probe blade tip clearance measurement system to develop mathematical methods to post-process capacitive probe output signals for calibration and tip clearance measurements. The mathematical methods developed in this study are …
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Sensing the human alpha rhythm using a non-contact electroencephalographic (EEG) electrode
… through hair, without scalp contact using two capacitive probe techniques. This is achieved by focusing on measurement of the alpha rhythm, an oscillatory EEG signal that is common among the population and is easily elicited with eye closure. Research results suggest that it is possible to …
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Analysis of a laser induced plasma in high pressure SF6 gas for high-voltage, high-current switching
… and electrical length measurements using a capacitive probe are also used to obtain laser induced spark lengths. Spectroscopy is used to estimate laser plasma temperature from which plasma resistivity is calculated.</p>
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Applied high resolution digital control for universal precision systems
… nm RMS over a 50 [mu]m range, with a fixtured capacitive probe. Acquisition at 2.5 MHz and closed-loop control at 625 kHz sampling rate is implemented on a National Instruments FPGA. The A/D circuit was designed and built on a custom printed circuit board around the commercially available …
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Diagnostics and modelling of an inductively coupled RF low-pressure low-temperature plasma
… has been set up. A single turn loop magnetic probe has been used to measure electromagnetic (EM) field in the discharge chamber. A Langmuir double probe has been designed to measure the plasma density and electron temperature. An emissive probe was used to measure the time averaged plasma …
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A Novel Device for Energy Distribution Measurements in an RF Plasma Discharge
Made available in DSpace on 2017-07-06T18:55:37Z (GMT). No. of bitstreams: 3 Nguyen_Phi_L_MS.pdf: 81580042 bytes, checksum: 3c7b14f053dfe7315d8732f2a80e9f8d (MD5) Nguyen_Phi_L_MS_ABS.pdf: 501973 bytes, checksum: 470486c7d05ab468f109e27a45f04fc8 (MD5) license.txt: 4813 bytes, checksum: …