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 10 of 10 for “"parallel-plate capacitor"”.
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Development and Testing of a Capacitor Probe to Detect Deterioration in Portland Cement Concrete
… dielectric constant in a laboratory setting. A parallel-plate capacitor operating in the frequency range of 0.1 to 40.1 MHz was developed at Virginia Tech for this purpose. While useful in research, this approach is not practical for field implementation. In this study, a capacitor probe was …
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Characterization and deterioration detection of Portland cement concrete using electromagnetic waves over a wideband of frequency
… setups were used to conduct those measurements: parallel plate capacitor (0.1-40 MHz), coaxial transmission line (100 MHz to 1 GHz), and TEM antenna (0.5-10 GHz). The setups were designed and built by engineers from the Civil and Electrical Engineering Departments at Virginia Tech as a part of …
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Physical Realizations of Memory Capacitive Systems
… namely memristors (memory resistors), memcapacitors (memory capacitors) and meminductors (memory inductors). Then, two possible physical realizations of memcapacitors are proposed.</p><p>The first of the suggested realizations is a solid-state memory capacitive (memcapacitive) system. Its …
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Characterization of anodic bonding
… structures. Surface contact was predicted by a parallel plate capacitor pull-in model after the voltage was applied, and linear elastic fracture mechanics (FEA) modeling predicted the toughness or work-of-adhesion of the bonded surfaces after the formation of a permanent silicon dioxide bond. …
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Design and Calibration of a RF Capacitance Probe for Non-Destructive Evaluation of Civil Structures
… investigated in a laboratory setting using a parallel plate capacitor operating in the frequency range of 0.1MHz to about 40MHz. This capacitor set-up consists of two horizontal-parallel plates with an adjustable separation for insertion of a dielectric specimen (PCC). While useful in …
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Photon-assisted spectroscopy of electronic interface states in perovskite oxide heterostructures
… of the photoinduced displacement current in a parallel-plate capacitor geometry under modulated optical excitation, and the classical Kelvin probe technique. The methods are evaluated comparatively with respect to their suitability to analyze the given oxidic interfaces. The main result of this …
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Structural Wireless Delamination Sensor
… WINS device is a CNT-polymer nanocomposite based parallel plate capacitor, adhesively bonded between two composite laminates, and connected in parallel to the capacitor of the SE. The PoC WINS device was subjected to loading in the Mode-I configuration to induce delamination crack growth. The …
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Performance Optimisation of Dielectric Elastomer Generators
… transducer, basically a highly deformable parallel-plate capacitor, made up of a soft DE membrane coated with two compliant electrodes on its opposite surfaces. This device is able to convert mechanical work, emanating from its interaction with the environment, into electrical energy. The …
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Low Profile, Printed Circuit, Dual-Band, Dual-Polarized Antenna Elements and Arrays
… have been shown in the literature to excite a parallel-plate mode that can degrade overall performance of the antenna. Plated through holes are introduced at the outer perimeter of the square ring slot to short out this parallel-plate mode. The plated through holes (also called vias) serve as …
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Bridging the gap between atomistic and continuum models to predict dielectric and thermodynamic properties of confined fluids
… permittivity for all the fluids. Whereas, the parallel dielectric response of polar liquids is enhanced and is proportional to dipolar correlations and density oscillation next to the interface. The perpendicular reduction and in-plane enhancement of the dielectric permittivity is attributed to …