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Showing 1 to 12 of 12 for “"copper plating"”.
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Mechanism of SPS acceleration in a PEG containing copper plating bath
<p>Deposition of copper in Through Silicon Vias (TSVs) is achieved by addition of organic compounds, which act as suppressors and accelerants to copper electroplating solutions. The focus of this study is on the acceleration effect of bis-(3-sodiumsulfopropyl) disulfide (SPS) which is believed to …
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Investigation of the autocatalytic Cu(II) reduction processes in the systems with natural polyhydroxylic compounds as ligands /
… – as an alternative ligand for electroless copper plating systems with reducer formaldehyde. Natural polyols are environmentally friendly, easily bio-degradable materials, but has not been studied enough for suitability for copper plating systems. In order to increase of the efficiency, the …
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Design and feasibility evaluation of low-cost 3D printing of Horn Antennas
… using both conductive paint and electroplating. The fabricated horns have been measured and tested in an anechoic chamber with the measured results analysed. The fabricated X-band pyramidal horn achieved a gain of 9.2 dBi with an input reflection coefficient of −11.9 dB at a centre …
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A rotating ring-disk study of interactions among SPS, cuprous ions, and oxygen
<p>The most common additives in copper plating baths for deep via filling are chloride, polyethylene glycol (PEG), a suppressor, and bis-(3-sulfopropyl)-disulfide (SPS), an accelerant. The copper in acid plating baths is provided by a Cu (II) salt. Cu (I) may be present as well and it influenced …
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Copper and Copper Alloys: Studies of Additives
Electrodeposition of copper is used extensively for the fabrication of electrical interconnects in semiconductor device manufacturing and in printed circuit board production, as well as other industries. Copper is often plated from an acidic copper sulfate electrolyte with a number of inorganic and …
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Optical properties of size selected nanocrystallites in porous silicon
… like behavior. A reflectivity study involving copper plating, however, provided evidence that the loss of crystalline absorption in the porous films is probably not due to a permanent loss in crystalline structure. Ill We have studied the theoretical photoluminescence predictions of the dimer …
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DNA-Templated Nanomaterials
… (a pervasive problem) during electroless plating of DNA with silver or copper. I have designed and constructed discrete three branched DNA junctions as scaffolding for self assembling three terminal, individually gateable nanotransistors. I have labeled these DNA structures with single …
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The electrodeposition of copper on carbon
… investigation was to study the properties of copper electrodeposits on carbon, to compare the various methods of electrodeposition as to adhesion to the carbon, nature of the interface, polishability, solderability, effect of the carbon surface, effect of temperature of plating, and to …
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Nanoscale Manipulation of Surfaces and Interfaces: Engineering Electrical Properties Through Nanofabrication
… nanopatterns are then exposed to an electroless copper plating solution, which selectively plates copper right onto those nanopatterns, to form copper nanofeatures. These are characterized with the AFM that helped form them. With this AFM based method, features of any shape can potentially be …
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Interfacial Study of Copper Electrodeposition with the Electrochemical Quartz Crystal Microbalance (EQCM)
… for metal interconnects. Characterization of copper underpotential deposition (UPD) on ruthenium and RuO2 electrodes by means of electrochemical methods and other spectroscopic methods is presented. Copper electrodeposition in platinum and ruthenium substrates is investigated at pH values …
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In-situ electrochemical spectroscopy and probe microscopy studies of electrodeposition
… 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 Au was …