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Dissertations / Theses on the topic 'CdO Nanoparticle'

Author: Grafiati

Published: 7 September 2023

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1

Geitner, Nicholas. "A Study of Gold Nanoparticles for Application in Semiconductor CdS Nanosheet Biosensor Devices." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1311893825.

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2

Pujalte, Igor. "Étude in vitro de la toxicité de nanoparticules métalliques (TiO2, ZnO, CdS) sur la cible rénale." Thesis, Bordeaux 2, 2011. http://www.theses.fr/2011BOR21849/document.

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De nombreuses incertitudes persistent sur la toxicité potentielle des nanoparticules (NPs) et leur devenir dans l’organisme humain. L’objectif de ce travail est de mieux comprendre les mécanismes cytotoxiques induits par des NPs métalliques sur une cible secondaire, représentée par le rein. En effet, les NPs sont susceptibles de franchir les barrières cellulaires, d’être véhiculées par le sang pour se retrouver filtrées par le rein au niveau des cellules glomérulaires et peut-être, réabsorbées au niveau des cellules tubulaires. Cette étude est réalisée in vitro, avec des NPs métalliques de tit

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3

Lama, Bimala. "Synthesis and Characterization of CdS Nanoparticle/Polymer Composites." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1375797236.

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4

Rho, Young Gyu. "Quantum-Confined CdS Nanoparticles on DNA Templates." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc279352/.

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As electronic devices became smaller, interest in quantum-confined semiconductor nanostructures increased. Self-assembled mesoscale semiconductor structures of II-VI nanocrystals are an especially exciting subject because of their controllable band gap and unique photophysical properties. Several preparative methods to synthesize and control the sizes of the individual nanocrystallites and the electronic and optical properties have been intensively studied. Fabrication of patterned nanostructures composed of quantum-confined nanoparticles is the next step toward practical applications. We have

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Mirfin, Tayla Michele. "Targeted delivery of GFP loaded polymeric nanoparticles to CD4 expressing cells using a CD4 specific aptamer." University of the Western Cape, 2020. http://hdl.handle.net/11394/8184.

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>Magister Scientiae - MSc<br>Human Immunodeficiency Virus (HIV), which is the cause of Acquired Immunodefiency Syndrome (AIDS) is a major global public health issue affecting over 37 million people worldwide and is responsible for claiming over 32 million lives since the discovery of the disease in 1981. Through effective diagnosis, treatment and prevention HIV is a manageable disease. Today, advanced antiretrovirals, known as HAART, serve as effective, first-line drug regimens, consisting of a variety of viral inhibitors, and have successfully helped viral suppression. However, issues arise w

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6

Li, Adrienne Victoria. "Immunization with synthetic nanoparticles to generate mucosal CD8 T Cell responses." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/80255.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biological Engineering, February 2013<br>Cataloged from PDF version of thesis. "September 2012."<br>Includes bibliographical references (p. 97-110).<br>Vaccines have benefited global health by controlling or eradicating life threatening diseases. With better understanding of infectious diseases and immunity, more interest has been placed on stimulating mucosal immune responses with vaccines as mucosal surfaces function as a first line of defense against infections. Progress made in nanoparticle research, in particular the success

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7

Suryajaya. "Study of electrostatically self-assembled thin films of CdS and ZnS nanoparticle semiconductors." Thesis, Sheffield Hallam University, 2007. http://shura.shu.ac.uk/20410/.

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In this work, CdS and ZnS semiconducting colloid nanoparticles coated with organic shell, containing either SO[3-] or NH[2+] groups, were deposited as thin films using the technique of electrostatic self-assembly. The films produced were characterized with UV-vis spectroscopy and spectroscopic ellipsometry - for optical properties; atomic force microscopy (AFM) - for morphology study; mercury probe - for electrical characterisation; and photon counter - for electroluminescence study. UV-vis spectra show a substantial blue shift of the main absorption band of both CdS and ZnS, either in the for

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8

Mohamad, Syed Abdul Malik Syed. "Electrical studies on hybrid MIS structures incorporating CdS nanoparticles in organic films." Thesis, Sheffield Hallam University, 2005. http://shura.shu.ac.uk/20004/.

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This project involves the investigation of a.c. and d.c. electrical characterisations and low-frequency noise properties of Langmuir-Blodgett (LB) films in metal-insulator-semiconductor (MIS) structure. Two types of insulating films based on hybrid organic-inorganic materials sandwiched between metal and semiconductor were fabricated. The original insulating films (untreated) were 40 layers Y-type LB films of Cd-salt stearic acid (CdSt[2]). The second type of insulating films were formed after the treatment of CdSt[2] films with H[2]S gas over a period of 12 hours at room temperature to grow C

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9

Mousavi, R. A., A. A. Sepahy, and M. R. Fazeli. "Biosynthesis, Purification and Characterization of Cadmium Sulfide Nanoparticles Using Enterobacteriaceae and their Application." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34903.

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The area of nanotechnology encompasses the synthesis of nanoscale materials, the understanding and the utilization of their physicochemical and optoelectronic properties, and the organization of nanoscale structures into predefined superstructures. The development of biologically inspired experimental processes for the synthesis of nanoparticles is evolving into an important branch of nanotechnology. Nanotechnology has recently emerged as an elementary division of science and technology that investigates and regulates the interaction at cell level between synthetic and biological materials

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10

Hill, Lawrence J. "Synthesis and Dipolar Assembly of Cobalt-Tipped CdSe@CdS Nanorods." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/332684.

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This dissertation contains four chapters with advances relevant to the fields of nanoparticle synthesis and nanoparticle self-assembly: a review of nanoparticle self-assembly, or “colloidal polymers”; dumbbell heterostructured nanorod synthesis; dipolar matchstick heterostructured nanorod synthesis; and self-assembly of dipolar matchsticks to form colloidal polymers. These chapters are followed by appendices containing supporting data for chapters two through four. The first chapter is a review summarizing current research involving the 1-D assembly of nanocrystals to form “colloidal polymers.

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11

Sachdeva, Parveen. "LATTICE VIBRATION STUDY OF SILICA NANOPARTICLE IN SUSPENSION." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3345.

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In recent years considerable research has been done in the area of "nanofluids". Nanofluids are colloidal suspensions of nanometer size metallic or oxide particles in a base fluid such as water, ethylene glycol. Nanofluids show enhanced heat transfer characteristics compared to the base fluid. The thermal transport properties of nanofluids depend on various parameters e.g. interfacial resistance, Brownian motion of particles, liquid layering at the solid-liquid interface and clustering of nanoparticles. In this work atomic scale simulation has been used to study possible mechanisms affecting t

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12

Hoff, Richard. "Iron Oxide Nanoparticle Surface Modification: Synthesis and Characterization." Master's thesis, Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/592997.

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Bioengineering<br>M.S.<br>Multifunctional nanomaterials can be engineered to aid in the diagnosis of diseases, enable efficient drug delivery, monitor treatment progress over time, and evaluate treatment outcomes. This strategy, known as theranostics, focuses on the combination of diagnostic and therapeutic techniques to provide new clinically safe and efficient personalized treatments. The evaluation of different nanomaterials’ properties and their customization for specific medical applications has therefore been a significant area of interest within the scientific community. Iron oxide nano

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13

Garcia, Saida Y. "A Characterization of CdS/Polymer Interactions by Solid State Nuclear Magnetic Resonance." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1240277763.

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14

Alterary, Seham. "Synthèse, caractérisation et fonctionnalisation de CdS et de suspensions magnétiques collïdales en vue d'application biomolécules." Paris 7, 2008. http://www.theses.fr/2008PA077230.

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Lors de cette thèse, deux axes ont été développés. La première partie du manuscrit a été consacrée au développement de nanocristaux pour des applications biologiques, Dans un premier temps, nous avons réussi la synthèse de nanoparticules de CdS_fonctionnalisées par des oligothiophènes carboxylates. Ces ligands carboxyliques forment une couche compacte autour des nanocristaux ce qui permet leur dispersion dans l'eau. Ces nano-structures fonctionnalisées ont été caractérisées par différentes techniques. La taille des particules peut être contrôlée entre 2 et 4 nm. La fonctionnalisation par la bi

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15

Mukundarajan, Sriram. "Synthesis of Alkylthiol-containing Fluorene Derivatives for Gold Nanoparticle Functionalization." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3570.

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A novel synthetic methodology has been developed for attaching fluorene derivatives, containing different types of electron donating and accepting groups at the 2 and 7 positions, to gold nanoparticles of different sizes by exploiting the affinity of the thiol functional group for gold. The distance between the dye and nanoparticles was varied by introducing two alkyl chains containing different number of carbon atoms at the 9 position on the fluorene ring system. The methodology that was developed gave enough scope for performing Radiative Decay Engineering (RDE) studies, in order to investig

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16

Hao, Junjie. "Revisiter la chiralité induite et la photodéposition d'or sur des semi-conducteurs CdSe/CdS possédant différentes morphologies contrôlées." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0186.

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Des morphologies contrôlées de nanocristaux de semi-conducteurs II – VI traditionnels à base de cadmium (NCs) sont présentées. Différentes morphologies peuvent être obtenues en utilisant le processus d'extraction et de purification à la tri-n-octylphosphine (TOP), tels que les nanodots, les nanofleurs, les têtards, les bâtonnets (dot-in-rods) et les tétrapodes. Les objets appelés CdSe/CdS (DRs) ont été spécifiquement choisis pour la poursuite de l'étude sur la chiralité et la photodéposition en raison de leur chiralité potentielle induite par le ligand et de leurs performances catalytiques. Le

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17

Cheng, Huaitzung Andrew. "Development of Polyphenolic Nanoparticles for Biomedical Applications." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/384200.

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Bioengineering<br>Ph.D.<br>Polymeric nanoparticles have a wide range of applications, particularly as drug delivery and diagnostic agents, and tannins have been regarded as a promising building block for redox and pH responsive systems. Tannins are a class of naturally occurring polyphenols commonly produced by plants and are found in many of our consumables like teas, spices, fresh fruits, and vegetables. Many of the health benefits associated with these foods are a result of their high tannin contents and the many different types of tannins found in various plants have demonstrated therapeut

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18

Dai, Qiu. "SURFACE ENGINEERING OF GOLD NANOPARTICLES AND THEIR APPLICATIONS." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3557.

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Gold nanoparticles (AuNPs) with their unique sizes, shapes, and properties have generated much enthusiasm over the last two decades, and have been explored for many potential applications. The successful application of AuNPs depends critically on the ability to modify and functionalize their surface to provide stability, compatibility, and special chemical functionality. This dissertation is aimed at exploring the chemical synthesis and surface modification of AuNPs with the effort to (1) control the number of functional groups on the particle surface, and to (2) increase the colloidal stabili

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19

Wang, Chaoming. "THERMAL DETECTION OF BIOMARKERS USING PHASE CHANGE NANOPARTICLES." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3877.

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Most of existing techniques cannot be used to detect molecular biomarkers (i.e., protein and DNA) contained in complex body fluids due to issues such as enzyme inhibition or signal interference. This thesis describes a nanoparticle-based thermal detection method for the highly sensitive detections of multiple DNA biomarkers or proteins contained in different type of fluids such as buffer solution, cell lysate and milk by using solid-liquid phase change nanoparticles as thermal barcodes. Besides, this method has also been applied for thrombin detection by using RNA aptamer-functionalized phase

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20

Korsvik, Cassandra. "Free Radical Scavenging Properties of Cerium Oxice Nanoparticles." Honors in the Major Thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1178.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Burnett College of Biomedical Sciences<br>Molecular Biology and Microbiology

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21

Hroch, Daniel. "Vertikálně uspořádaná pole CdS nanotyčinek pro aplikace v solárních článcích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254222.

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This thesis describes the deposition of nanoparticles into nanoporous alumina templates. Nanoparticles of cadmium sulphide were chosen thanks to wide band gap of 2,45 eV. CdS is desired semiconductor promising better efficiency when comes to solar radiation conversion to useful energy. Theoretical part consists of explanation of photovoltaic principles, band-gap theory of materials, currently available technologies to manufacture solar cells and their efficiencies. Next part introduces the approaches of manufacturing nanoporous templates from aluminium (Anodized Aluminium Oxide, AAO) in detail

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22

Ono, Luis. "IN-SITU GAS PHASE CATALYTIC PROPERTIES OF METAL NANOPARTICLES." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3277.

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Recent advances in surface science technology have opened new opportunities for atomic scale studies in the field of nanoparticle (NP) catalysis. The 2007 Nobel Prize of Chemistry awarded to Prof. G. Ertl, a pioneer in introducing surface science techniques to the field of heterogeneous catalysis, shows the importance of the field and revealed some of the fundamental processes of how chemical reactions take place at extended surfaces. However, after several decades of intense research, fundamental understanding on the factors that dominate the activity, selectivity, and stability (life-time) o

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23

Noll, Alexander J. "Cerium oxide nanoparticles for the detection of antimicrobial resistance." Honors in the Major Thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/486.

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The rise of antimicrobial resistance demands the development of more rapid screening methods for the detection of antimicrobial resistance in clinical samples to both give the patient the proper treatment and expedite the treatment of patients. Cerium oxide nanoparticles may serve a useful role in diagnostics due to their ability to exist in a mixed valence state and act as either oxidizing agents or reducing agents. Considering that cerium oxide nanoparticles have been shown to shift in absorbance upon oxidation, a useful method of antimicrobial resistance detection could be based on the oxid

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24

Menezes, Roseline. "Synthesis, characterization and antibacterial activity of silver embedded silica nanoparticle/nanogel formulation." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4804.

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The antibacterial property of silver (Ag) has been known since ancient time. It is reported in the literature that silver nanoparticles (AgNPs) exhibit improved antibacterial properties in comparison to silver ions of equivalent metallic Ag concentration. Such improvement in antibacterial activities is due to the high surface area to volume ratio of AgNPs (which facilitates interaction with the bacterial cells), increased release of silver ions and direct intra-cellular uptake of AgNPs leading to localized release of Ag ions. To date, over 300 consumer products containing AgNPs are available i

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25

Clukay, Christopher J. "Gold nanoparticle generation using in situ reduction on a photoresist polymer substrate." Honors in the Major Thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/361.

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This report presents evidence that in-situ reduction of metal ions bound to a cross-linked polymer surface does not always result in nanoparticle formation solely at the interface, as is commonly assumed, but also as much as 40 nm deep within the polymer matrix. Tetrachloroaurate ions were bound using a variety of multi-functional amines to cured films of SU-8 -- a cross-linkable epoxide frequently used for micro- and nanofabrication -- and then treated using one of several reducing agents. The resulting gold-nanoparticle decorated films were examined by X-ray photoelectron spectroscopy and by

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26

Yildirim, Handan. "STRUCTURAL, ELECTRONIC, VIBRATIONAL AND THERMODYNAMICAL PROPERTIES OF SURFACES AND NANOPARTICLES." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3533.

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The main focus of the thesis is to have better understanding of the atomic and electronic structures, vibrational dynamics and thermodynamics of metallic surfaces and bi-metallic nanoparticles (NPs) via a multi-scale simulational approach. The research presented here involves the study of the physical and chemical properties of metallic surfaces and NPs that are useful to determine their functionality in building novel materials. The study follows the Â bottom-upÂ approach for which the knowledge gathered at the scale of atoms and NPs serves as a base to build, at the macroscopic scale, mater

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Covone, Simon Armando Mostafa. "Synthesis, structure, and catalytic properties of size-selected platinum nanoparticles." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4656.

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The use of heterogeneous catalysis is well established in chemical synthesis, energy, and environmental engineering applications. Supported Pt nanoparticles have been widely reported to act as catalysts in a vast number of chemical reactions. In this report, the performance of Pt/ZrO2 nanocatalyst for the decomposition of methanol, ethanol, 2-propanol, and 2-butanol is investigated. The potential of each alcohol for the production of H2 and other relevant products in the presence of a catalyst is studied. All the alcohols studied show some decomposition activity below 200[degrees]C which incre

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Haque, Md Firoze H. "Single-electron transport spectroscopy studies of magnetic molecules and nanoparticles." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4914.

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Magnetic nanoparticles and molecules, in particular ferromagnetic noble metal nanoparticles, molecular magnet and single-molecule magnets (SMM), are perfect examples to investigate the role of quantum mechanics at the nanoscale. For example, SMMs are known to reverse their magnetization by quantum tunneling in the absence of thermal excitation and show a number of fundamental quantum mechanical manifestations, such as quantum interference effects. On the other hand, noble metal nanoparticles are found to behave ferromagnetically for diameters below a few nanometers. Some of these manifestation

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Hossain, Mainul. "X-ray Radiation Enabled Cancer Detection and Treatment with Nanoparticles." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5309.

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Despite significant improvements in medical sciences over the last decade, cancer still continues to be a major cause of death in humans throughout the world. Parallel to the efforts of understanding the intricacies of cancer biology, researchers are continuously striving to develop effective cancer detection and treatment strategies. Use of nanotechnology in the modern era opens up a wide range of possibilities for diagnostics, therapies and preventive measures for cancer management. Although, existing strategies of cancer detection and treatment, using nanoparticles, have been proven success

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Das, Prajna Paramita. "Enhancement of photoactivity by synthesizing nanotube-nanoparticle composites of TIO₂ and CdS for generation of hydrogen via splitting of water." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460754.

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31

Garcia, Marisol. "TRULY NON INVASIVE GLUCOSE OPTICAL SENSOR BASED ON METAL NANOPARTICLES GENERATION." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2260.

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Diabetes is a disease that causes many complications in human normal function. This disease represents the sixth-leading cause of death in USA. Prevention of diabetes-related complications can be accomplished through tight control of glucose levels in blood. In the last decades many different glucose sensors have been developed, however, none of them are really non invasive. Herein, we present the study of the application of gold and silver nanoparticles with different shapes and aspect ratios to detect glucose traces in human fluids such as tears and sweat. This is to our knowledge the first

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Patel, Chetak. "ROOM TEMPERATURE SYNTHESIS AND SYSTEMATIC CHARACTERIZATION OF ULTRA-SMALL CERIA NANOPARTICLES." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4354.

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Cerium oxide (ceria, CeO₂) is a rare earth oxide that has attracted wide-spread research interest because of its unique properties such as high mechanical strength, oxygen ion conductivity, oxygen storage capacity and autocatalytic property. In recent years, researchers have discovered that ceria nanoparticles (NPs) are capable of protecting cells from free radical induced damage. Interestingly, it was found that nanometer size (~ 5 nm) ceria can scavenge free radicals quite efficiently, thus acting as an anti-oxidant. This phenomenon has been explained based on the autocatalytic property of c

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Tejpal, Jyoti. "The use of metal and metal oxide nanoparticles against biofilms." Thesis, De Montfort University, 2016. http://hdl.handle.net/2086/13114.

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The persistence of biofilms in hospital settings are associated with Healthcare Associated Infections (HCAI), causing increased morbidity, mortality and healthcare costs. The resistance of biofilms against commonly used hospital disinfectants has been well reported. Metal and metal oxide nanoparticles (NP) such as silver (Ag), copper (Cu), zinc oxide (ZnO) and copper oxide (CuO) exhibit antimicrobial properties against various pathogens. Methods: Biofilm formation of Pseudomonas aeruginosa and Staphylococcus aureus in a Centre for Disease Control (CDC) biofilm reactor and a 96 well plate was c

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Chen, Yanshuang. "The Effect of Inorganic Nanostructured Materials on Neurogenesis." Master's thesis, Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/421454.

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Bioengineering<br>M.S.<br>Damage and/or loss of functional neurons can lead to detrimental cognitive and paralyzing effects in humans. Prime examples of such negative situations are well documented in patients with Parkinson's and Alzheimer's disease. In recent years, the utilization of neural stem cells and their derivation into neurons have been the focus of many research endeavors. The main reason for this is because neural stem cells are multi-potent and can differentiate into neurons, astrocytes, and oligodendrocytes. The research that will be detailed in this thesis involves the potentia

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Ghoshal, Amitabh. "Plasmon enhanced near-field interactions in surface coupled nanoparticle arrays for integrated nanophotonic devices." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4630.

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Reflection measurements on nanoparticle arrays fabricated using electron-beam lithography confirm the predicted particle-grating interaction. An unexpected polarization-dependent splitting of the film-mediated collective resonance is successfully attributed to the existence of out-of plane polarization modes of the metal nanoparticles. In order to distinguish between the excitation of propagating surface plasmons and localized nanoparticle plasmons, spectrally resolved leakage radiation measurements are presented. Based on these measurements, a universally applicable method for measuring the w

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Tambosi, Reem. "Stress and toxicity of metal in photosynthetic bacteria : multi-scale study of the effects and the targets of metal ions and nanoparticles Silver and Copper Acute Effects on Membrane Proteins and Impact on Photosynthetic and Respiratory Complexes in Bacteria Silver Effect on Bacterial Cell Membrane Structure Investigated by Atomic Force and Scanning Electron Microscopes Cadmium and Copper Cross-tolerance. Cu+ alleviates Cd2+ toxicity, and both cations target heme and chlorophyll biosynthesis pathway in Rubrivivax gelatinosus Additive effects of metal excess and superoxide, a highly toxic mixture in bacteria." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASL070.

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L’usage intensif des métaux et des ions métalliques dans l'industrie et l'agriculture représente une menace sérieuse pour l'environnement et pour tous les êtres vivants en raison de la toxicité aiguë de ces ions. Cependant, cela peut aussi être un outil prometteur. En effet, les ions comme les nanoparticules d'argent sont très utilisés dans diverses applications médicales, industrielles et sanitaires. L'effet antimicrobien de ces nanoparticules est en partie lié aux ions Ag⁺ libérés et à leur capacité à interagir avec les membranes bactériennes. L'objectif de ce projet est d'étudier l'interact

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Haque, Md Firoze. "CONTROLLED DEPOSITION OF MAGNETIC MOLECULES AND NANOPARTICLES ON ATOMICALLY FLAT GOLD SURFACES." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2109.

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In this thesis I am presenting a detailed study to optimize the deposition of magnetic molecules and gold nanoparticles in atomically flat surfaces by self-assembling them from solution. Epitaxially grown and atomically flat gold surface on mica is used as substrate for this study. These surfaces have roughness of the order one tenth of a nanometer and are perfect to image molecules and nanoparticles in the 1-10 nanometers range. The purpose of these studies is to find the suitable parameters and conditions necessary to deposit a monolayer of nano-substance on chips containing gold nanowires w

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Patil, Swanand. "FUNDAMENTAL ASPECTS OF REGENERATIVE CERIUM OXIDE NANOPARTICLES AND THEIR APPLICATIONS IN NANOBIOTECHNOLOGY." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3156.

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Cerium oxide has been used extensively for various applications over the past two decades. The use of cerium oxide nanoparticles is beneficial in present applications and can open avenues for future applications. The present study utilizes the microemulsion technique to synthesize uniformly distributed cerium oxide nanoparticles. The same technique was also used to synthesize cerium oxide nanoparticles doped with trivalent elements (La and Nd). The fundamental study of cerium oxide nanoparticles identified variations in properties as a function of particle size and also due to doping with triv

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Colon, Jimmie. "Use of Cerium Oxide Nanoparticles For Protection Against Radiation-Induced Cell Death." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6218.

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The ability of engineered cerium oxide nanoparticles to confer radioprotection was examined. Rat astrocytes were treated with cerium oxide nanoparticles to a final concentration of 10 nanomolar, irradiated with a single 10 Gy dose of ionizing radiation and cell death was evaluated by propidium iodine uptake at 24 and 48 hours after radiation insult. Treatment of rat astrocytes with nanoceria resulted in an approximate 3-fold decrease in radiation induced death. These results suggest that the nanoceria are conferring protection from radiation induced cell death. Further experiments with human c

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McKee, James. "Development and Characterization of Nanoparticlee Enhancements in Pyrolysis-Derived High Temperature Composites." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6320.

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Thermal protection systems, which are commonly used to protect spacecraft during atmospheric entry, have traditionally been made of materials which are traditionally high in manufacturing costs for both the materials needed and the manufacturing complexity, such as carbon-carbon composites and aerogels. In addition to their manufacturing costs, these materials are also limited in their strength, such as PICA, in a way that necessitate the use of tiles as opposed to single structures because they are not capable of supporting larger structures. The limitations of polymer reinforced composites

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Ahmed, Selver. "FORMATION, DYNAMICS AND CHARACTERIZATION OF SUPPORTED LIPID BILAYERS ON SiO2 NANOPARTICLES." Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/213126.

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Chemistry<br>Ph.D.<br>This work is devoted to understanding the formation of supported lipid bilayers (SLBs) on curved surfaces as a function of lipid properties such as headgroup charge/charge density and alkyl chain length, and nanoparticle properties such as size and surface characteristics. In particular, the formation of SLBs on curved surfaces was studied by varying the size of the underlying substrate SiO2 nanoparticles with size range from 5-100 nm. Curvature-dependent shift in the phase transition behavior of these supported lipid bilayers was observed for the first time. We found tha

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Darugar, Qusai A. "Surface effects on the ultrafast electronic relaxation of some semiconductor and metallic nanoparticles." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-06272006-160645/.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2007.<br>Zhang, John, Committee Member ; Wang, Zhong, Committee Member ; El-Sayed, Mostafa, Committee Chair ; Orlando, Thomas, Committee Member ; Lyon, Andrew, Committee Member.

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Ben, slimen Fedia. "Caractérisation des verres luminescents préparés par la méthode sol-gel." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0019/document.

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Les verres dopés par des ions de terres rares ou/et des nanoparticules de semi-conducteurs continue à faire l’objet de plusieurs recherches grâce à leur efficacité dans les domaines d’optoélectroniques. En effet, ces matériaux sont parmi les candidats potentiels pour des applications en photonique tels que les amplificateurs à fibre optique, les convertisseurs de lumière, les capteurs et les guides d'ondes 3D.Dans le cadre de cette thèse, des verres à base de silice (SiO2)dopé par des ions d’europium (Eu3+) ont été préparés par le processus sol-gel. Afin de mieux disperser les ions de terres r

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Torrance, David. "Influence of the Local Dielectric Environment and its Spatial Symmetry on Metal Nanoparticle Surface Plasmon Resonances." Honors in the Major Thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1195.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Sciences<br>Physics

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Golze, Spencer. "Combining Nanoimprint Lithography with Dynamic Templating for the Fabrication of Dense, Large-Area Nanoparticle Arrays." Master's thesis, Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/369925.

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Mechanical Engineering<br>M.S.<br>The study of nanomaterials is a developing science with potentially large benefits in the development of catalysts, optical and chemical sensors, and solid state memory devices. As several of these devices require large arrays of nanoparticles, one of the greatest obstacles in material characterization and device development is the reliable manufacture of nanopatterns over a large surface area. In addition, various applications require different nanoparticle size and density. High density arrays with small nanoparticle sizes are difficult to achieve over a lar

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Wen, Wucheng. "Development and Evaluation of Nano-herbal Therapy for Metastatic Breast Cancer Treatment." Diss., Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/534260.

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Pharmaceutical Sciences<br>Ph.D.<br>Triptolide (TPL), a diterpenoid triepoxide that is extracted from a traditional Chinese herb called Tripterygium Wilfordii (also known as ‘Thunder God Vine’) has recently drawn increasing interests from pharmaceutical and biomedical researchers, especially in the aspect of its potential efficacy on multiple cancer treatment. TPL has shown significant growth and proliferation inhibition activities in a broad range of cancer cell types. Moreover, it has shown the inhibition of osteoclastogenesis by breast cancer bone metastasis. However, due to its limitation

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Nawotka, Alexis. "Evaluation of Small Unilamellar Vesicles as a Removal Method of Benzo[a]pyrene from Humic Substances in Soils." Master's thesis, Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/592708.

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Geology<br>M.S.<br>Polycyclic aromatic hydrocarbons (PAHs) are highly hydrophobic and lipophilic and are readily retained by soil surfaces and organic matter. Hence, several techniques have been developed in an effort to economically and effectively remove them from soil solids. Their strong affinity to soil organic matter limits their biodegradation processes by microorganisms, making them persistent in the soil environment. Recently, the use of “small unilamellar vesicles” (SUVs), nano-scale lipid aggregates, has been proposed as a means to enhance these microbial degradations, by effectivel

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Besson, Sophie Marie Catherine. "Films organisés de silice mésoporeuse : Synthèse, caractérisation structurale et utilisation pour la croissance de nanoparticules." Palaiseau, Ecole polytechnique, 2001. http://www.theses.fr/2002EPXX0012.

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Croy, Jason Robert. "Supported mono and bimetallic platinum and iron nanoparticles electronic, structural, catalytic, and vibrational properties." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4652.

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Catalysis technologies are among the most important in the modern world. They are instrumental in the realization of a variety of products and processes including chemicals, polymers, foods, pharmaceuticals, fuels, and fuel cells. As such, interest in the catalysts that drive these processes is ongoing, and basic research has led to significant advances in the field, including the production of more environmentally friendly catalysts that can be tuned at the molecular/atomic level. However, there are many factors which influence the performance of a catalyst and many unanswered questions still

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Tangeysh, Behzad. "SIZE-CONTROLLED SYNTHESIS OF TRANSITION METAL NANOPARTICLES THROUGH CHEMICAL AND PHOTO-CHEMICAL ROUTES." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/327946.

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Chemistry<br>Ph.D.<br>The central objective of this work is developing convenient general procedures for controlling the formation and stabilization of nanoscale transition metal particles. Contemporary interest in developing alternative synthetic approaches for producing nanoparticles arises in large part from expanding applications of the nanomaterials in areas such as catalysis, electronics and medicine. This research focuses on advancing the existing nanoparticle synthetic routes by using a new class of polymer colloid materials as a chemical approach, and the laser irradiation of metal sa

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