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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 18 of 18 for “"Silver Particles"”.
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Predictive Modelling of the Growth of Nanoscale Silver Particles: Verification of an Aggregative Growth Mechanism
The formation mechanisms of nanoscale particles are poorly understood. Classical nucleation and growth models fail to describe many systems because they neglect important particle-particle interactions. In this study, we examine the formation of nanoscale silver particles from the reduction of …
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Sintering of Micro-scale and Nanscale Silver Paste for Power Semiconductor Devices Attachment
… the advance of power conversation application. Silver paste sintering has been widely used in microelectronics and been demonstrated the superior properties. The high processing temperature, however, prevents its application of interconnecting power semiconductor devices. This research focuses …
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VUV 157nm F₂ laser irradiation of micro- and nano-scale particles
Micro- and nanoscale particles have recently become the focus of a great deal of research interest due to their wide-ranging potential in a number of applications.This thesis concerns the interaction of small particles with the 157nm wavelength vacuum ultraviolet, VUV, emission from a molecular …
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New Materials Systems for Advanced Tribological and Environmental Applications
… and can be easily regenerated and maintained. Silver coated fiberglass with colloidal sized silver particles was developed. Systems made of silver coated fiberglass are highly effective, have high capacity and can be regenerated easily. These disinfection units do not leach silver ions, or add …
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Controlling Plasmon Coupling in Biomolecule-Linked Nanoparticle Assemblies
… nm assemblies composed of 13 nm gold "satellite" particles tethered by duplex DNA to a 50 nm gold "core" particle. Comparison of core-satellite assemblies formed with duplex DNA tethers of varying length demonstrates that, while core-satellite separation is controlled by the number of base pairs …
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Assessing the tensile and fatigue behavior of aerosol jet printed nano silver particle traces on polyimide substrates
… behavior of aerosol jet printed Nano silver particles on two common polyimide substrates, Upilex and Kapton.</p> <p>There are many different aspects to electromechanical testing of flexible interconnects, but this work focuses on the effects of tension and cyclic loading. In comparison …
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Low-Temperature Sintering of Nanoscale Silver Paste for Semiconductor Device Interconnection
… of low-temperature sintering of nanoscale silver pastes. The nanoscale silver pastes have been formulated by adding organic components (dispersant, binder and thinner) into nano-silver particles. The selected organic components have the nano-particle polymeric stabilization, paste …
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Effect of silver nanoparticles on planktonic and biofilm cell growth
Silver nanoparticles (Ag NPs) are one of the most widely used nanoparticles, most notably serving as an antimicrobial agent for sanitization and medical purposes. Despite of their widespread use, little was known about the environmental effect of silver nanoparticles. This research focused on the …
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Release of Silver from Nanotechnology Consumer Products and Potential for Human Exposure
Silver nanoparticles (nanosilver) are gaining significant attention from the academic and regulatory communities, not only because of their antimicrobial effects and subsequent product applications, but also because of their potential health and environmental impacts. Although some human health …
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The impacts of silver nanoparticles on planktonic and biofilm bacteria
Nanoscale silver particles represent a new generation of cost-effective antibacterial technologies. Due to the increased manufacturing and use of silver nanoparticles (Ag NPs) in consumer goods their release and accumulation into the environment is highly likely but their fate, behaviour and …
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Measuring Aerosol Nanoparticles By Ultraviolet Photoionisation
… have indicated that ultrafine aerosol nanoparticles, those under 100 nm in diameter, may have significant health impacts due to their relatively high number concentration, surface area and potential for deep penetration into the human lung. However, epidemiological evidence remains limited …
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Electrochemical Synthesis of Silver Nanoparticles for Applications in Nitrate Detection, Catalysis and Antibacterial Activity
… on the formation and characterisation of silver nanoparticles. The potential applications of the silver nanoparticles are investigated using the reduction of 4-nitrophenol and the detection of nitrates. In addition, data are presented on the antibacterial activity of the silver …
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Hybride von Metall-Nanopartikeln mit hochverzweigten Polyethylenimin als lösliche, abtrennbare Katalysatoren
… and physical surface properties. These metal particles consisting of a few hundred atoms, most of them located at the surface, are not easily stabilized in solution, and controlling their size remain a key challenge. Thermodynamically favored aggregation is usually suppressed by adsorption of …
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The Impact of Morphology and Composition on the Resistivity and Oxidation Resistance of Metal Nanostructure Films
… are often comprised of expensive and rare silver particles. Thin film applications such as organic light emitting diodes (OLEDs) and organic photovoltaics (OPVs) predominantly employ indium tin oxide (ITO) as the transparent conductive layer which requires expensive and wasteful vapor …
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Improvement of Cathode Material for Solid Oxide Fuel Cell through Surface Infiltration and Electrospinning
… of the LSCF/CGO by including metal oxide nanoparticles. By utilizing an infiltration approach, Co<sub>3</sub>O<sub>4</sub>, NiO and CuO nanoparticles with a particle size of 10–20 nm has been effectively deposited onto the surface of the LSCF/CGO composite cathode. The as infiltrated cathode …
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Spectroscopic Studies of Abiotic and Biological Nanomaterials: Silver Nanoparticles, Rhodamine 6G Adsorbed on Graphene, and c-Type Cytochromes and Type IV Pili in Geobacter sulfurreducens
… studies of three different systems: silver nanoparticles, the dye molecule rhodamine 6G adsorbed on graphene, and the type IV pili and c-type cytochromes produced by the dissimilatory metal-reducing bacterium Geobacter sulfurreducens. Although these systems are quite different in some …
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Solid-state superionic conductors for advanced nanoscale fabrication
Silver possesses the highest electrical conductivity of any metal, and this property allows for unique interaction with visible light when patterned at the nanoscale. Few methods exist for patterning silver down to sub-100nm scales, and all tend to be complicated, multi-step processes which require …
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Aging Study of Silver-exchanged Mordenite and Silver-functionalized Silica Aerogel in Dry Air, Humid Air, No and No2
… iodine vapor can be effectively captured by silver containing adsorbents such as silver exchanged mordenite (Ag0Z) and silver functionalized silica aerogel (Ag0-aerogel) used in this study. However, the aging impact of off-gas streams on the adsorbents is one of major issues in the removal of …