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 20 of 29 for “"electrode system"”.
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The micro-optical ring electrode: a new and novel electrode system for photoeletrochemistry
… sensor, the micro-optical ring electrode (MORE), is described. Based on a thin-ring microelectrode and using at fibre-optic light guide as the insulating material interior of the ring, the MORE has been deisigned, constructed and developed to permit electrochemical investigation …
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Effect of field utilization factor on air breakdown level under impulse lightning in point-sphere electrode system
… of U50 breakdown voltages. A metallic point electrode is separated by a certain distance form a sphere gap. Also, the gap length between the spheres will be varied from 1 cm to 3 cm. The procedure to get U50 is followed to Up and Down method. FEMM software is use for simulation and analysis …
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Electrodeposition of Diamond-like Carbon Films
Electrodeposition of diamond-like carbon (DLC) films was studied on different substrates using two different electrochemical methods. The first electrochemical method using a three-electrode system was studied to successfully deposit hydrogenated DLC films on Nickel, Copper and Brass substrates. …
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Investigation of the electrowinning of neodymium oxide in room temperature ionic liquid
… described. The electrochemical behavior and the electrodeposition of neodymium in hydrogen-cation-based ionic liquid are investigated. The cyclic voltammetric measurements are conducted and discussed to show one-step reduction of the trivalent neodymium ion in hydrogen-cation-based ionic liquid. …
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Thin film solar cells using all-electrodeposited ZnS, CdS and CdTe materials.
… which in turn has led to the research on electrodeposition technique as a possible candidate for the deposition of semiconductor materials and the fabrication of thin-film solar cells using these materials.Electronic quality ZnS, CdS, and CdTe thin layers have been successfully …
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Conducting polymers for electrochemically mediated separations
… form an attractive pair for an asymmetric electrode system to work in tandem. The asymmetric system can be used in a cyclic fashion, through repeated application of a small potential (close to 0 V) to program the capture of organics from a large volume of feed solution, and a higher …
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A universal miniaturized electrochemical sensing platform and its applications
… basis and physical implementation of the sensing system, which covers design of hardware, embedded system and sensing algorithm. The circuit hardware principle is based on the three-electrode system widely used in electrochemistry experiments. Then the thesis discloses several real electrochemical …
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Investigation of sine-wave inputs for an FDM EIT system
… (FDM) electrical impedance tomography (EIT) system. This thesis was commissioned by Prof. J. Tapson, on the 1 st of November 200 1. The goals were as follows: 1. Investigate the research done on this project by previous researchers. 2. Investigate the current applications in which …
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Oxygen reduction reaction on carbon supported dispersed platinum nanoparticles and extended platinum surfaces
… by the development of platinum supported carbon electrodes. The surface morphology was modified by varying the platinum loading, such that the surface was taken from isolated nanoparticles to an extended surface. The effects of the changes in surface morphology and particle size on the ORR were …
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An investigation into the dynamic implementation of a 16-electrode FDM Electrical Impedance Tomography System
… Teague implemented a dual-plane, 16-electrode, Frequency Division Multiplexed (FDM) Electrical Impedance Tomography measurement system using square-wave excitation, as well as Neural Network (NN) based image reconstruction algorithms. Research succeeding Teague's investigated the use …
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Effect of temperature on the association constants of some divalent metal ions with chloride in sea water-like solutions
… determine the effect on the equilibria in these systems. The total metal concentration was less than 10<sup>-8</sup> M.</p><p>Differential pulse anodic striping voltammetry was used with a conventional three electrode system and a thin-film working electrode of Pt/Hg. Complex formation was …
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A study of electrode-tissue impedances encountered in cardiac pacing
Any study of the electrical properties of electrodeelectrolyte systems is rendered difficult by their dependance on, amongst other things, electrode history, electrode surface finish, electrode geometry, electrode area, electrolyte composition and the frequency and amplitude of the applied signal. …
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Two-Electrode Voltage Clamp (TEVC) Based Scanning Ion Conductance Microscopy: New Methodology and Validation
… biology. Current SICM techniques call for a one electrode probe, but in this research we are exploring a two-electrode scanning apparatus. With a two-electrode approach, the two-electrode voltage clamp (TEVC) technique is utilized. TEVC is typically used in electrophysiological experiments to …
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Study of TaC Supported Ir-Based Oxygen Evolution Reaction Electrocatalysts Synthesized by Surfactant-Mediated Method
… of the electrocatalysts were studied in a 3 electrode system. The supported electrocatalyst showed larger voltammetric charge and mass activity, and better durability compared to the unsupported electrocatalyst. The supported electrocatalyst also showed lower charge transfer resistance at the …
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Research and development of CdS/CdTe solar cells incorporating ZnTe layers.
… these layers were obtained by growing them using electrodeposition in aqueous solutions. In this project, electrodeposition using 2-electrode system was employed to deposit all of the semiconductors. The decision was taken to avoid contamination that might be happening due to the leakage of …
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Nanocomposite immunosensor for anti-transglutaminase antibody
… as a noval sensor platform on a glassy carbon electrode (GCE). The OvoxPpy was then doped with gold-nanoparticles (GNP) by electrodeposition using cyclic voltammetry to form GNP|OvoxPpy||GCE electrode system. Morphology and size of the GNP|OvoxPpy||GCE nanocomposite were determined using …
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Thermal bubble behaviour in liquid nitrogen under electric fields
… behaviour under electric fields using different electrodes have been completed. Free thermal bubble motion and related characteristics in LN2 under a conductor-plane electrode have been experimentally studied. A model for bubble motion in this non-uniform electric field has been developed and is …
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Screen-printed ion selective electrodes for soil ion detection
… comprising a set of disposable ion-selective electrode (ISE) strips and a handheld electrochemical reader, which together transduce soil analyte concentrations into a numeric input for a mobile-phone based fertilizer recommendation engine. As a proof-of-concept, potassium (K+) selective …
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Hydrogen terminated silicon surfaces: Development of sensors to detect metallic contaminants and stability studies under different environments
… with respect to two non-contaminating reference electrode systems was evaluated. In the first case, conductive diamond was used as a reference electrode. In the second case, a dual silicon electrode system was used with one of the silicon-based electrodes protected with an anion permeable …
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Photoelectrochemical tandem cells with enzymes wired to hierarchically-structured electrodes for solar fuel synthesis
… chemistry and materials science to develop model systems that overcome Nature’s limitations, such as low-yielding metabolic pathways and non-complementary light absorption by photosystem (PS) I and II. PSII, the first photosynthetic enzyme, is capable of photocatalytic water oxidation, a …
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