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Showing 1 to 20 of 54 for “"Capacitively coupled"”.
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A standalone capacitively coupled occupancy sensor
… the design and implementation of a standalone, capacitively coupled, occupancy sensor. Unlike previous iterations, the new sensor is decoupled from the fluorescent lamp. A well controlled, high voltage amplifier and autotransformer are designed as a replacement source and operate over a wide …
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Surface:plasma interactions in GaAs subjected to capacitively coupled RF plasmas
Surface compositional changes in GaAs due to RF plasmas of different gases have been investigated by XPS and etch rates were measured using AFM. Angular Resolved XPS (ARXPS) was also employed for depth analysis of the composition of the surface layers. An important role in this study was …
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Geophysical Assessment of Subsurface Soil Conditions Using Capacitively Coupled Resistivity
… this research is to explore the applicability of Capacitively-Coupled Resistivity (CCR) as an improvement on traditional drilling and sampling methods for subsurface soil investigations. The CCR method could be used to identify critical locations for drilling and sampling such as expansive clay …
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Decomposition of Carbon Dioxide in a Capacitively Coupled Radio Frequency Discharge
… of CO<sub>2</sub> was studied in a capacitively coupled radio frequency discharge using Martian Simulant Gas mixture that contains 95% CO<sub>2</sub>. The discharge was operated at a gas pressure of 3 to 6 Torr and a discharge power density of less than 2.0 W/cm<sup>3</sup>. The main …
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Measurment of Process Plasma Parameters in a RF Capacitively Coupled Device
Made available in DSpace on 2017-07-06T18:59:27Z (GMT). No. of bitstreams: 3 Wilson_Jeffrey_L_MS.pdf: 81564240 bytes, checksum: bb11bb53dd8ef093afd430fddc29e9b1 (MD5) Wilson_Jeffrey_L_MS_ABS.pdf: 559103 bytes, checksum: 94f9ef64e77d3e783f5f215f4541bba4 (MD5) license.txt: 4813 bytes, checksum: …
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A Capacitively Coupled Bistable Gas Discharge Cell for Computer Controlled Displays
Made available in DSpace on 2014-12-08T22:24:08Z (GMT). No. of bitstreams: 1 6706776.pdf: 1900223 bytes, checksum: 2dca6b85997171a4b182751293c77f4c (MD5) Previous issue date: 1966
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Silver nanoparticles and thin films for strained-silicon surface enhanced raman spectroscopy and capacitively-coupled radiofrequency heating
… techniques, were also investigated by means of a capacitively-coupled RF heating system with a thermal imaging camera. Although there was rapid heat production from the as-purchased Ag NP/buffer solutions, NPs dispersed in ultra-pure high pressure liquid chromatography water were indeed shown to …
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GEOPHYSICAL DELINEATION OF MEGAPOROSITY AND FLUID MIGRATION PATHWAYS FOR GEOHAZARD CHARACTERIZATION WITHIN THE DELAWARE BASIN, CULBERSON COUNTY, TEXAS
… the Rustler Formation.</p> <p> A TR-5 OhmMapper capacitively-coupled resistivity meter was used to acquire resistivity data for geohazard characterization. This study utilized a traditional dipole-dipole array, with an electrode spacing of 2.5 meters between receivers, and a transmitter offset of …
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QUBIT COUPLED MECHANICAL RESONATOR IN AN ELECTROMECHANICAL SYSTEM
… In this system the mechanical resonator is capacitively coupled to a superconducting transmon which is embedded in a superconducting coplanar waveguide (CPW) cavity. The difficulty of achieving high quality of superconducting qubit in a high-quality voltage-biased cavity is overcome by …
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Development of a portable miniaturised capillary electrophoresis system for chemical nerve agents detection
… between CE (Capillary electrophoresis) and C4D (Capacitively-Coupled Contactless Conductivity Detection) technology applied on a miniaturised microfluidic chip device. The comparison of the practicability of micro-device analysis between high-cost but sophisticated micro/nanofabricated silicon …
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CHARACTERIZATION OF BCl₃, SF₆, and BCl₃/SF₆ PLASMAS USING LANGMUIR PROBE MEASUREMENTS
… study in BCl3, SF6, and mixtures of BCl3/SF6 capacitively-coupled plasmas is presented. In this study, energy distribution functions, electron temperatures (and average electron energy) and electron, positive ion, and negative ion densities were determined as a function of process conditions …
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Measurement of the Electron Radiation Temperature and Electron Density in Parallel Plate Radio Frequency Discharges
… and electron density in parallel plate capacitively coupled radio frequency (2.5 MHz) discharges. Evidence is presented for the existence and importance of an energetic electron beam, produced by the large cathode sheath voltage, which sustains and excites the plasma. The measured …
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Detection of Antibody-Antigen Reactions using Surface Acoustic Wave and Electrochemical Immunosensors
… the surface of lithium tantalate by inductively coupled interdigital transducers to detect antibody-antigen reactions. The electrical properties at the surface of a sensor are also changed when an antibody-antigen reaction occurs. This can be detected by electrochemical sensors. Capacitively …
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Substrate Impurity Incorporation Mitigation for Improved AlGaN/GaN-ON-Si RF Performance
… conduction path is highly detrimental as it is capacitively coupled to the GaN HEMT 2DEG channel. Moreover, the presence of significant lattice mismatch and thermal mismatch between the AlN nucleation layer and Si leads to a very large threading dislocation density (TDD) within the AlN layer …
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Micro-Nozzle Simulation and Test for an Electrothermal Plasma Thruster
… micro-thruster.</p> <p>Pocket Rocket uses a capacitively coupled plasma, generated by radio-frequency, in order to provide neutral gas heating via ion-neutral collisions within a gas discharge tube. When compared to a cold-gas thruster of similar size, this gas heating mechanism allows Pocket …
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Towards high-bandwidth scanning impedance imaging
… imaging system. The system explored here uses a capacitively-coupled electrode array in order to distinguish various features such as a dielectric layer or a variable air gap based on measured electrode impedance. The frequency at which the impedance is measured is near 500 MHz. Also, this system …
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Development of an uncompensated diagnostic for the measurement of phase-resolved characteristics in radio-frequency plasmas
… Many semiconductor processing tools use capacitively coupled plasma discharges (CCP's) for etching, deposition and sputtering. CCP's generally have a large voltage oscillation so the ability to accurately measure the plasma parameters under these conditions is highly desirable. …
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Decoherence In Quantum Dot Charge Qubits: The Role Of Electromagnetic Fluctuations
… electron with the freedom to move between two capacitively coupled quantum dots creates a `pseudo'-spin system with the same qubit behavior as the more natural two level system of a single electron spin. The excess electron in the double dot system is restricted to one of the two dots, thereby …
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High-Performance Gateless Iii-Nitride Microwave Switches
… a new type of gateless microwave switch using capacitively-coupled contact (C3) is presented, which operates under very different mechanism than conventional ohmic HFET, and has lower loss, smaller OFF-state capacitance, and better high power capability at frequencies exceeding 10 GHz, as well …
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CHARACTERIZATION AND DELINEATION OF POTENTIAL EVAPORITE GEOHAZARDS USING ELECTRICAL RESISTIVITY METHODS ALONG FM 2185, CULBERSON COUNTY, TEXAS
… along a 48-kilometer segment of FM 2185.</p> <p>Capacitively-Coupled Resistivity (CCR) and Direct-Current Resistivity (DCR) methods were used to characterize evaporite karst features that do not manifest surficially but pose potential geohazard concerns. CCR data was acquired using the Geometrics …
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