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 96 for “"Electroplating"”.
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Gold-electroplating technology for X-ray-mask fabrication
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Electroplating process plant automation and management using emerging automation and communications technologies
The Electroplating (EP) process industry is currently facing some challenging process control problems in their production plant due to an insufficient level of automation being applied in the industry; the control is largely manual, and the monitoring of both plant and processes is ad hoc. The …
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Microscopic and Spectroscopic Investigation Of: I. Copper-Additive Systems in Electroplating Bath. II. Supported Phospholipid Bilayer Systems
Second, soft imaging mode of AFM and phase modulated ellipsometry are used to observe the phase transition process of supported lipid bilayer systems with and without the influence of other macromolecules. Addition of a weak polyelectrolyte, poly(methacrylic acid) (PMA), to a supported phospholipid …
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Ultrasonic and electroplating approach for washcoat of γ-alumina and nickel oxide (nio) catalyst on fecral substrate for catalytic converter
… NiO catalyst. This study propose ultrasonic and electroplating approach as coating technique which not fully explored. Several problems in developing CATCO such as washcoat layer is spalling since the loose adhesion and unstable oxide growth in long term oxidation. Therefore, the main objective …
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A study of the current best practice in the Scottish electroplating industry and improved metal recovery technique for waste water streams.
Small specialist engineering companies, whose access to new technologies is very limited, often perform metal finishing operations. Metals and chemicals are the basis of the finishing industry. Compared to most of the other manufacturing and industrial production processes, metal finishing can …
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Creating Complex Hollow Metal Geometries Using Additive Manufacturing and Metal Plating
… other additive manufacturing systems. Copper electroplating and electroless nickel plating are investigated as metal coating methods. Several parametric parts are tested while developing a manufacturing process. Copper electroplating is determined to be too dependent on the geometry of the …
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Silver Surfaces for Dropwise Condensation of Steam
… introduction of an additional promotor. For electroplating, the critical silver thickness depended on the electroplating bath used and the method of surface preparation prior to plating. Six combinations of four plating baths and two surface preparation techniques were studied. The minimum …
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Investigation of the Influence of a Model Additive System on Copper Electrodeposition: Integration of Experiments on the Surface Morphology Evolution With Multiscale Simulation
In the last chapter, copper electroplating behavior on electrodeposited ruthenium surface was briefly discussed.
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Improved Fabrication and Quality Control of Substrate Integrated Microelectrode Arrays
… to the quartz. The problems associated with gold electroplating were solved via the addition of a pulsed-DC application of gold in a new citrate buffered electroplating solution.
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Design, fabrication and testing of a lateral self-cleaning MEMS switch
… electrode lift-off, plating mold formation, electroplating, mold removal, switch structure formation and device release. The major issue is the fabrication of the vertical sidewall of gold for electrical contact. A fine control of electroplating current and temperature makes deep and clean …
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Characterization and modeling of pattern dependencies in copper interconnects for integrated circuits
… technology for deep sub-micron features, where electroplating and chemical mechanical polish (CMP) processes have a vital role in the fabrication of integrated circuits. The processes both suffer from a similar problem: the copper electroplated profiles and the polished surface exhibit pattern …
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Powder/Sol-enhanced Au–Ni Electroplated Composite Coatings: Structures, Properties and Mechanisms
… mechanical properties. In this research project, electroplating was used to make Au–Ni based coatings. TiO2 (or ZrO2) solid particles and Ti (or Zr) contained sol were added into the standard Au–Ni electroplating solution as the source of the ceramic reinforcement to form different types of …
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Gold Surfaces for Dropwise Condensation
… of steam at atmospheric pressure. Seven gold electroplating baths, one electroless immersion gold plating bath, and vacuum gold vapor deposition were used as deposition techniques. Five different surface preparation techniques of a pure gold sample were also tested. Gold deposits ranged in …
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Treatment of plating plant wash waters by ion exchange
… by ion exchange of the wash waters from a mixed electroplating operation has been investigated. The loading characteristics of a strong acid resin has been studied experimentally and by mathematical simulation. The ability to separate the loaded metals by complexation techniques during elution …
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A dielectrophoretic, microfluidic device for sorting lipid-producing organisms used as bio-oil sources
… The electrodes were constructed by a low current electroplating process, allowing for extremely rapid metal deposition. At 100 [mu]A, electroplating proceeds at 3.38 0.63 [mu]m/min, creating our structures in fewer than 15 minutes. This is an order of magnitude improvement over previous related …
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Investigation of electroless nickel undercoat for duplex nickel chromium electrodeposition onto aluminium and its alloys
… acidic nature and high temperature of the nickel electroplating process. One way of preventing this current density related problem is to use an electroless nickel undercoat before the nickel/chromium deposit is applied. The mechanism by which this occurs is not fully understood and it is an …
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In-situ electrochemical spectroscopy and probe microscopy studies of electrodeposition
… of quaternary ammonium levelers proposed for electroplating Cu in through-silicon vias (TSVs). The first study investigates the mechanism and morphology of chromate deposition, a process of which has significant importance both industrially and environmentally. Electrodeposition of chromate on …
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Theoretical aspects of electrodeposition in charged porous media
… Some applications of electrodeposition include electroplating of metals such as copper and charging of next-generation high-energy-density metal batteries such as lithium metal batteries. From both theoretical and practical standpoints, it is important to understand how to control and exploit …
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