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 8 of 8 for “"Silver and Gold nanoparticles"”.
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Sensing Applications of Silver and Gold Nanoparticles
… applications is for manufacturing ultra-compact and efficient sensors for chemical and biological molecule detection. Noble metals, such as gold (Au) and silver (Ag), because of their distinguished optical property"localized surface plasmon resonances (LSPRs) that exhibit low loss, are ideal …
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Optical Properties of Substrate Supported Mixtures of Silver and Gold Nanoparticles
Silver and gold have been extensively explored in the field of nanoscience owing to their strong plasmonic responses in the visible region of the spectrum. Herein, mixtures of Au and Ag nanoparticles (NPs) were combined to achieve new nanoarchitectures with useful electromagnetic properties. It was …
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Biosynthesis and antibacterial activity of silver and gold nanoparticles from the leaf and callus extracts of Amaranthus dubius, Gunnera perpensa, Ceratotheca triloba and Catharanthus roseus
Submitted in complete fulfilment for the Degree of Master of Technology: Biotechnology, Durban University of Technology, Durban, South Africa, 2013.
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Influence of metal nanoparticles on fluorescence properties
<p>In this project, we studied the effect of silver and gold nanoparticles of various sizes on the fluorescence properties of tris (2, 2-bipyridyl) dichloro ruthenium (II) hexahydrate (Ru (bpy)3 2+), tryptophan and phenylalanine. For (Ru (bpy)3 2+) absorbed on silver and gold nanoparticles, the …
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Synthesis and growth dynamics study of silver nanoparticles
… concept of shape-controlled synthesis of metal nanoparticles is investigated by considering the growth mechanism of metal nanoparticles. This thesis is divided into four chapters, chapter one presents a general introduction about various physiochemical aspects of nanornaterials. The different …
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Investigating the therapeutic effects of silver and gold nano particles capped with selected medicinal plants against tuberculosis
… 21st century. Despite the curative treatments and measures of control in the communities, TB plays a significant role in human infectious disease. Studies have shown that there is an emergence of major drug-resistant TB. Aim: This study was aimed at evaluating the biological activities of …
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Synthesis, Characterization and Evaluation of Novel Treatment against Resistant Pathogenic Bacteria
… over past decades, bringing about genuine and frequently deadly contaminations that can't be dealt with by ordinary means. This has led to a search on developing solutions to this problem by searching for new source of antimicrobial agents or chemically altering the existing ones. …
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Quantum mechanical origin of the plasmonic properties of noble metal nanoparticles
Small silver and gold clusters (less than 2 nm) display a discrete absorption spectrum characteristic of molecular systems whereas larger particles display a strong, broad absorption band in the visible. The latter feature is due to the surface plasmon resonance, which is commonly explained by the …