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Dissertations / Theses on the topic 'Nanoparticles silicon'

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Published: 28 May 2022

Last updated: 30 July 2025

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1

Ddungu, John. "Synthesis and characterisation of silicon-based nanoparticles for diagnostic applications." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF063.

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Dans le cadre de cette thèse intitulée “Synthèse et caractérisation de nanoparticules à base de silicium pour des applications de diagnostique”, nous avons conçu des nanosondes basées sur des systèmes de petites nanoparticules à base de silicium (<5 nm) (NPs) portant différentes molécules fonctionnelles sur leur surface. Les NPs de Si ont été synthétisées, caractérisées et fonctionnalisées pour une utilisation dans les applications d'imagerie in vivo et d'électrochimiluminescence (ECL). Pour l’imagerie, une sonde active de tomographie par émission de positrons (TEP) et un colorant émissif o

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2

Mannl, U., B. Magunje, and C. van den Berg. "Electronic Devices Based on Printed Silicon Nanoparticles." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34778.

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We have demonstrated that our high quality silicon nanoparticles can be used for various application in printed electronics. The use of silicon nanoparticles as the active layer in electronic materials, which can be printed using simple techniques on low-temperature substrates, such as paper, brings a great advantage for producing flexible electronics. Moreover we showed that the resistances of customised inks, produced in our laboratories are comparable with those of commercial available inks. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle

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3

Pettigrew, Katherine Ann. "Solution synthesis and characterization of silicon and silicon/germanium nanoparticles /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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4

Walton, Stanley Douglas. "Fully printed transistors employing silicon nanoparticles." Doctoral thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13077.

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Includes bibliographical references.<br>A new device, which utilises a previously unknown two-way mode of current switching, has been developed. This is the current switching transistor, a three-terminal electronic device which exhibits a transfer resistance, in which the application of a potential or injection of charge to one terminal controls the current at either of the two remaining terminals. The development of the current switching transistor arose from a more general project focussed on printed electronics using nanoparticulate silicon, with the aim of producing fully printed transisto

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5

Wozniak, A., A. Yegorov, and V. Ivanov. "Novel Polymer Nanocomposite with Silicon Carbide Nanoparticles." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42514.

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Polyimides rank among the most heat-resistant polymers and are widely used in high temperature plastics, adhesives, dielectrics, photoresists, nonlinear optical materials, membrane materials for separation, and Langmuir–Blodgett (LB) films, among others. While there is a variety of high temperature polyimides, there is a demand for utilizing these materials at higher and higher temperatures in oxidizing and aggressive environments. Therefore, we sought to use materials which do not oxidize to enhance properties of the polyimide composition maintaining polyimide weights and processing advantage

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6

Ashby, Shane. "The fabrication of thermoelectric materials using functionalised silicon nanoparticles." Thesis, University of East Anglia, 2015. https://ueaeprints.uea.ac.uk/53371/.

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Silicon nanoparticles (SiNPs) can be synthesised by a variety of methods. A one-pot synthesis based on the chemical reduction of inverse micelles has been used to produce SiNPs with ligands of varying alkyl chain length. These particles were characterised to determine how the chain length affects the surface functionalities and particle size. The particles produced show optical properties typical of SiNPs produced by solution methods. Silicon based materials are a potential alternative to current thermoelectric materials (e.g. Bi2Te3) due to their abundance and low toxicity. Phenylacetylene fu

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7

Roussey, Arthur. "Preparation of Copper-based catalysts for the synthesis of Silicon nanowires." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10164.

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Les travaux dans cette thèse ont pour objectif la synthèse de catalyseurs (nanoparticules de cuivre) de taille contrôlée pour la synthèse de nanofils de silicium dans des conditions compatibles CMOS, c'est-à-dire en évitant l'utilisation de l'or comme catalyseur et pour des croissances basse température (<450°C). Les résultats obtenus ont permis de montrer que les techniques de chimie de surface classiquement utilisées pour la préparation de catalyseurs sur des supports 3D (silice, nitrure de titane…) sont directement applicables et transférables sur des supports 2D (wafer de silicium recou

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8

Menz, William Jefferson. "Stochastic modelling of silicon nanoparticle synthesis." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245146.

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This thesis presents new methods to study the aerosol synthesis of nano-particles and a new model to simulate the formation of silicon nanoparticles. Population balance modelling is used to model nanoparticle synthesis and a stochastic numerical method is used to solve the governing equations. The population balance models are coupled to chemical kinetic models and offer insight into the fundamental physiochemical processes leading to particle formation. The first method developed in this work is a new mathematical expression for calculating the rate of Brownian coagulation with stochastic wei

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9

Morales, Sánchez Alfredo. "Correlation between optical and electrical properties of materials containing nanoparticles." Doctoral thesis, Universitat Autònoma de Barcelona, 2008. http://hdl.handle.net/10803/3409.

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En esta tesis, capas de óxido de silicio rico en silicio [SRO, (SiOx, x<2)] con diferentes excesos de silicio fueron depositadas por medio de la técnica de depósito químico en fase vapor a baja presión (LPCVD). Un segundo conjunto de muestras de SRO implantadas con silicio (SI-SRO) adicional fueron también fabricadas. Nanopartículas de silicio (Si-nps) en estas capas fueron creadas después de someter a las muestras a un tratamiento térmico en alta temperatura (1100 y 1250º C). La composición, microestructura y propiedades ópticas de estas capas de SRO y SI-SRO fueron analizadas en función de l

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10

Anahtar, Melis Nuray. "Designing and characterizing hyperpolarizable silicon nanoparticles for magnetic resonance imaging." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45457.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.<br>Includes bibliographical references (p. 37-41).<br>Magnetic Resonance Imaging (MRI) is one of the most powerful noninvasive tools for diagnosing human disease, but its utility is limited because current contrast agents are ineffective when imaging air-tissue interfaces, in regions with low signal-tonoise ratios, or in areas that undergo motion, like the heart and bowel. A technique called dynamic nuclear polarization can be used to hyperpolarize nuclei and achieve dramatic MRI signal enhancement wit

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Liu, Junjun. "Optical properties of chiral plasmonic nanoparticles and mesoporous silicon nanowires." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/385.

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Structural engineering plays an essential role in controlling the optical properties of nanostructures, which are of fundamental and practical interest in nanoscience and technology. In this study, two kinds of nanostructural engineering were investigated systematically to enrich nano-optics research: structural helicity was imposed on plasmonic nanoparticles (NPs) with chiroptical activity engineerable in the ultraviolet (UV)-visible region, and porosification was imposed on silicon nanowires (SiNWs) to tune optical interaction and photoluminescence (PL).. The generation of helical metamateri

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12

Obozna, V. P., and O. S. Hnatenko. "The impact of laser radiation on nanoparticles, which using in medical." Thesis, Sumy State University, 2019. http://openarchive.nure.ua/handle/document/8571.

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13

Paudel, Keshab Raj Wieliczka David Michael. "X-ray photoelectron spectroscopy study of gold nanoparticles supported on silicon." Diss., UMK access, 2005.

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Thesis (M.S.)--Dept. of Physics . University of Missouri--Kansas City, 2005.<br>"A thesis in physics." Typescript. Advisor: David Wieliczka. Vita. Title from "catalog record" of the print edition Description based on contents viewed June 26, 2006. Includes bibliographical references (leaf 43). Online version of the print edition.

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14

Kork, El Nayla. "Near field optical spectroscopy of hybrid nanoparticles for biosensor application and confocal microscopy of single silicon nanocrystals." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10108/document.

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Le domaine des nanomatériaux joue un rôle de plus en plus important dans de nombreuses applications, qu’elles soient de natures biologique, médicales électroniques etc… Dans ce travail, nous présenterons des résultats concernant deux types de nanoparticules, le premier genre traite de nanoparticules hybrides confectionnées chimiquement pour des fins biologiques, le deuxième concerne des nanocristaux de silicium fabriqués par pyrolise laser pour des applications potentielles en optoélectronique. Les études sont menées en mettant en œuvre deux différentes techniques optiques, l’une en champ loin

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15

Laminack, William I. "Characterization of functionalized and unfuctionalized metal oxide nanoparticle interactions with gas mixtures on porous silicon." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53877.

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In order to create more sensitive and accurate gas sensors, we have studied the interactions of gas mixtures on metal oxide nanoparticle decorated porous silicon interfaces. The nanoparticles control the magnitude and direction of electron transduction from the interaction of analyte gases to an extrinsic porous silicon semiconductor. These interactions can be predicted by the Inverse Hard Soft Acid Base (IHSAB) principle. Moreover, the metal oxide nanoparticles can be functionalized with nitrogen and sulfur, modifying the oxide’s band structure. These modifications are demonstrated t

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Behray, Mehrnaz. "Synthesis, characterisation and biological activity of silicon nanoparticles functionalised by anticancer compounds." Thesis, University of East Anglia, 2016. https://ueaeprints.uea.ac.uk/59420/.

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Silicon Nanoparticles (SiNPs) are non-toxic materials particularly suitable for various biomedical applications. They exhibit unique optical properties for use in bioimaging and diagnostic applications. To exploit these aspects, this thesis explores the synthesis, characterisation and biological activity of SiNPs functionalised by anticancer compounds. Thiourea-based compounds have been shown to represent one of the most promising classes of anticancer agents due to their strong inhibitory activity against Epidermal Growth Factor Receptor (EGFR), overexpression of which is observed in common t

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Mirsadeghi, Seyed Hamed. "A silicon photonic circuit for optical trapping and characterization of single nanoparticles." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61374.

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In this thesis, two slightly different silicon-on-insulator (Silicon-on-Insulator (SOI)) planar photonic integrated circuits for optically trapping and characterizing single nanoparticles are designed, fabricated, and fully characterized. These symmetric (input/output) structures are formed by etching two dimensional patterns through a 220 nm thick silicon slab atop a micrometer thick layer of silicon dioxide, and are operated in a fluidic cell at wavelengths of ≈ 1.55 μm. Each consist of two grating couplers, two parabolic tapered waveguides, two single mode ridge waveguides, two photonic cry

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Bian, Tiezheng. "Synthesis and thermoelectric application of conductive polymer capped silicon nanoparticles and composites." Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/66857/.

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A solution reduction synthesis method has been used to produce organic ligand capped silicon nanoparticles in a large scale, and with electrochemical etching method in comparison. Nanoparticles produced are explored in a variety of aspects, including particle size, elemental composition, thermal stability and optical property. These results are used to determine how different ligands could affect the silicon core and the thermoelectric performance. Polymerisation of thiophene is studied to produce two types of oligomer capped nanoparticles, with the difference that whether the polymerisation h

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Ahire, Jayshree. "Synthesis and functionalization of carbohydrate capped silicon nanoparticles for targeting cancer cells." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/49687/.

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Silicon nanoparticles (SiNPs) hold prominent interest in various aspects of biomedical applications. For this purpose, surface functionalization of the NPs is essential to stabilize them. A facile method is reported here to synthesize highly stable and brightly luminescent amine-terminated SiNPs. The diameter of the crystal cores is 4.6 nm. The NPs emit strong blue-green photoluminescence (PL) at peak position 460 nm with quantum yield (QY) 22%. The NPs exhibited an exceptional stability over a wide pH range (4−14) and are resistant to aging over several weeks. For SiNPs to target specific dis

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Koc, Mumin Mehmet. "Non contact atomic force microscopy investigation of silicon nanoparticles deposited on HOPG." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/36124.

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The aim of this thesis was to further our understanding on the surface dynamics of silicon nanoparticles deposited on Highly Oriented Pyrolytic Graphite (HOPG) using non-contact Atomic Force Microscopy (NC-AFM) with the longer term aim of developing practical applications. Silicon nanoparticles in liquid were produced using sputtering gas aggregation by co-depositing with water in an ultrahigh vacuum (UHV) environment (von Haeften 2009). Water was sprayed into the system with custom designed apparatus onto a cold target cooled with liquid Nitrogen (LN2) to form an ice matrix. The melt from thi

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21

Chiu, Sheng-Kuei. "Photoluminescent Silicon Nanoparticles: Fluorescent Cellular Imaging Applications and Photoluminescence (PL) Behavior Study." PDXScholar, 2015. http://pdxscholar.library.pdx.edu/open_access_etds/2455.

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Molecular fluorophores and semiconductor quantum dots (QDs) have been used as cellular imaging agents for biomedical research, but each class has challenges associated with their use, including poor photostability or toxicity. Silicon is a semiconductor material that is inexpensive and relatively environmental benign in comparison to heavy metal-containing quantum dots. Thus, red-emitting silicon nanoparticles (Si NPs) are desirable to prepare for cellular imaging application to be used in place of more toxic QDs. However, Si NPs currently suffer poorly understood photoinstability, and further

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22

Temple, Tristan Leigh. "Optical properties of metal nanoparticles and their influence on silicon solar cells." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/66674/.

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The optical properties of metal nanoparticles have been investigated by simulation and experimental techniques. The aim of this investigation was to identify how to use metal nanoparticles to improve light-trapping in silicon solar cells. To do this we require nanoparticles that exhibit a high scattering efficiency and low absorption (i.e. high radiative efficiency) at near-infrared wavelengths. The simulation results identified Ag, Au, Cu and Al as potential candidates for use with silicon solar cells. The optical properties of Ag, Au and Cu nanoparticles are very similar above 700 nm. Below

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Odo, Ayodele. "Synthesis, Characterisation and Device Application of Silicon Nanoparticles produced by Mechanical Attrition." Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6544.

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Nanostructured silicon is a promising materials for research because it serves as building blocks for nanotechnological applications, such as nano and quantum electronics, sensors and energy applications. However, many of the synthesis methods come with an increased level of sophistication, and thus the unit cost of material produced is high. The study shows that cheap and mass production of silicon nanoparticles can be achieved e ciently with a topdown process of mechanical attrition, particularly using an orbital pulveriser. The inclusion of the powder in a polymeric binder resulted in a new

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Clayborne, Peneé Armaize. "Silicon Oxide Nanoparticles Reveal the Origin of Silicate Grains in Circumstellar Environments." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1213.

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The processes leading to the widespread presence of crystalline silicates throughout the galaxy and the origin of silicon nanoparticles thought to be responsible for the observed extended red emission in diffuse galactic background are still far from being understood. One of the most abundant oxygen bearing species in molecular astronomical regions is SiO. It has been conjectured that silicate formation probably proceeds via the agglomeration of these molecular species; however there are no studies to reveal the microscopic mechanism. We have used a synergistic approach combining experiments

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Khavari, Faraz. "Towards monodisperse Silicon Nanocrystals: density gradient centrifugation applied on commercial gold nanoparticles." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186172.

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The application of silicon nanocrystals as non-toxic bio-labels and downconverters requires their uniform size distribution in order to minimize the inhomogeneous broadening of the photoluminescence peak. In this thesis, we set the basis for their size-separation via the density-gradient centrifugation method. To be more precise, we successfully apply this technique to separate 5 and 10 nm gold nanoparticles from an ensemble by using an engineered medium layer stack. In addition, we explain how atomic force microscopy is used to measure the size of the nanoparticles, with a particular attentio

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Li, Yang Yang. "Porous silicon photonic crystals as hosts for polymers, biopolymers, and magnetic nanoparticles /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3153688.

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Grigorieva, T. F., A. I. Letsko, T. L. Talako, et al. "Investigation of the Process and Products of the MASHS Interaction of Silicon Dioxide with Magnesium Reparation in the Carbon-Free Method for Obtaining Silicon." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34939.

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Mechanocomposites SiO2 / Mg with different component ratios were obtained. It was demonstrated that chemical interaction between the components in these systems starts at lower temperatures. The products of the SHS process with SiO2 / Mg mechanocomposites as precursors are mainly silicon and magnesium oxide; in addition, magnesium silicate and silicide are formed. After the treatment of the product in three stages with different acids, silicon was obtained in the form of agglomerates about 500-1000 nm in size, compoused of smaller particles about 50-80 nm. When you are citing the docum

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28

Cádiz, Bedini Andrew Paolo [Verfasser], Uwe [Akademischer Betreuer] Rau, and Bernhard [Akademischer Betreuer] Hidding. "Sonochemical synthesis of silicon hydride polymers and silicon nanoparticles from liquid silanes / Andrew Paolo Cádiz Bedini ; Uwe Rau, Bernhard Hidding." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1186069163/34.

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Cádiz, Bedini Andrew Paolo Verfasser], Uwe [Akademischer Betreuer] [Rau, and Bernhard [Akademischer Betreuer] Hidding. "Sonochemical synthesis of silicon hydride polymers and silicon nanoparticles from liquid silanes / Andrew Paolo Cádiz Bedini ; Uwe Rau, Bernhard Hidding." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1186069163/34.

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Meseth, Martin [Verfasser], Roland [Akademischer Betreuer] Schmechel, and Franz-Josef [Akademischer Betreuer] Tegude. "Photovoltaics with Silicon Nanoparticles / Martin Meseth. Gutachter: Franz-Josef Tegude. Betreuer: Roland Schmechel." Duisburg, 2015. http://d-nb.info/1067748571/34.

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Wagner, Richard [Verfasser]. "Gas Phase Synthesis of Silicon Nanoparticles for Application in Printable Electronics / Richard Wagner." München : Verlag Dr. Hut, 2014. http://d-nb.info/1049362977/34.

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Werwa, Eric 1970. "The role of quantum confinement effects in the visible photoluminescence from silicon nanoparticles." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43547.

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Parker, Megan. "Synthèse de sphères de silicium pour metamatériaux optiques." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0231.

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Les interactions entre la lumière et la matière peuvent être maîtrisées et exploitées grâce à des choix précis en matière de conception des matériaux, ce qui permet de concevoir de nouveaux composants optiques. Les métamatériaux constituent une classe spécifique de matériaux, décrivant un matériau fabriqué artificiellement qui dirige ou propage la lumière d'une manière dont les matériaux naturels sont incapables de le faire. La fabrication de ces matériaux implique l'assemblage de plusieurs éléments constitutifs, de dimensions inférieures à la longueur d'onde, en un réseau spécifiquement ordon

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Zaslavskaya, L. V., E. E. Belousova, S. V. Radio, et al. "Finely Dispersed Powders of Silicon-substituted Hydroxyapatite Obtained from Solutions." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35110.

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Bioactive powders of silicon substituted hydroxyapatites containing 1.4-4.3 wt % Si were synthesized by precipitation from aqueous solutions of calcium nitrate and ammonium (sodium) hydrophospate. Tetra-ethoxysilane and sodium silicate in basic media were used as a source of silicon. Using scanning electron microscopy, surface morphology of the obtained products was studied. It has been found that procedure us-ing sodium silicate allows obtaining of materials with 100-200 nm particle size. Procedure that utilizes tet-raethoxysilane leads to 40-100 nm particles. Chemical, X-ray phase analysis a

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Popovic, D. M., A. A. Zekic, M. Trtica, and J. Stasic. "Picosecond Laser Ablation of Silicon Single Crystal in a Liquid Environment." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34927.

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The picosecond Nd:YAG laser at wavelengths of 1064 nm was used to produced the silicon-based nanoparticles in de-ionized water. The main goal of our work presented here was enlight the role of thermal effects on the process of laser ablation of solid target in liquid. To accieve this goal the additional heating of the target surface by continuous laser was applied during the experiment. The shift of nanoparticles size distribution caused by applying of additional continuous laser was reported in this work. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/

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Van, Laar Jean H. "Microwave plasma synthesis of nano-sized silicon carbide at atmospheric pressure." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/43762.

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The favourable physical and mechanical properties of silicon carbide (SiC) nanopowders allow application across many areas, including high-power, high-frequency electronics and high-temperature technologies. Many different synthesis methods for the creation of SiC nanoparticles have been studied, including carbothermic reduction, pulsed laser deposition, sol-gel processes, microwave heating and various plasma techniques. Among the different synthesis methods reported in the literature, very few experiments investigate the microwave-induced plasma synthesis of SiC nanoparticles. The few report

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El-Kork, Nayla. "Spectroscopie à champ proche optique de nanoparticules hybrides pour application en capteurs biologique et microscopie confocale de nanocristaux de sillicium uniques." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00692395.

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Le domaine des nanomatériaux joue un rôle de plus en plus important dans de nombreuses applications, qu'elles soient de natures biologique, médicales électroniques etc... Dans ce travail, nous présenterons des résultats concernant deux types de nanoparticules, le premier genre traite de nanoparticules hybrides confectionnées chimiquement pour des fins biologiques, le deuxième concerne des nanocristaux de silicium fabriqués par pyrolise laser pour des applications potentielles en optoélectronique. Les études sont menées en mettant en œuvre deux différentes techniques optiques, l'une en champ lo

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Brikas, Marijus. "Microprocessing of silicon and metals with high pulse repetition rate picosecond lasers." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110324_161348-78636.

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The objective of the thesis is to investigate applicability of high pulse repetition rate picosecond lasers for microfabrication and to clarify high repetition rate pulse interaction with metals and silicon. The ablation threshold and accumulation rate dependence on the laser pulse duration for silicon and metals has been experimentally studied. The model of optimal focus conditions for the maximum ablation rate was developed and experimentally confirmed. The material evaporation rate decreases duo to plasma screening for high pulse energies. Various pulse length lasers have been used for cutt

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Foster, Evan Wayne. "Self-assembly of extended, high-density gold nanoparticle monolayers on silicon dioxide /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1188875831&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2006.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 173-182). Also available for download via the World Wide Web; free to University of Oregon users.

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Venkatachalam, Dinesh Kumar, and Dinesh Venkatachalam@anu edu au. "Study of Self-assembled Gold Nanocluster Patterns in Ion Implanted Silicon: Order from Disorder." RMIT University. Applied Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081209.113630.

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Gold (Au) implantation in silicon (Si) has been a topic of great interest from both fundamental and applied perspectives. Ion implantation is a versatile technique due to its ability to form surface-embedded nanoparticles that provide better adhesion. Also, being an integral part of the substrate lattice, the nanoclusters produced by ion implantation are free from impurities and their size distribution can be controlled by carefully optimizing the beam parameters. During our experiments to produce nanoclusters of Au on Si for use as seeds for the growth of nanowires, we stumbled across an unus

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Chen, Xi. "Photothermal Effect in Plasmonic Nanostructures and its Applications." Doctoral thesis, KTH, Optik och Fotonik, OFO, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143754.

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Plasmonic resonances are characterized by enhanced optical near field and subwavelength power confinement. Light is not only scattered but also simultaneously absorbed in the metal nanostructures. With proper structural design, plasmonic-enhanced light absorption can generate nanoscopically confined heat power in metallic nanostructures, which can even be temporally modulated by varying the pump light. These intrinsic characters of plasmonic nanostructures are investigated in depth in this thesis for a range of materials and nanophotonic applications. The theoretical basis for the phototherm

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García, Castelló Núria. "Atomistic study of structural and electronic transport properties of silicon quantum dots for optoelectronic applications." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/145640.

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Introduction It is undisputed that the silicon became the material most widely used in electronics in recent decades[1,2]. The qualities of silicon are well known, from its abundance and low cost to its ability to easily combine with oxides, so that the material has become essential in integrated electronic circuits and CMOS technology. A step further, though, is the idea of integrating electronics and photonics on the same silicon-based technology[3]. However, new strategies are needed to overcome the two principal obstacles of a possible bulk Si photonics: the indirect band gap and the band

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Kang, Chan-kyu. "Preliminary study of tribology uniform control of the density control of the functionalized gold nanoparticles on a modified silicon surface /." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/KANG_CHAN_40.pdf.

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Aslam, Nabeel. "Neuron cell survival on positively charged surface bound gold nanoparticles over gold and silicon substrate." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-44033.

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The attachment of cells onto solid surfaces is a fundamental pedestal in the field of biosensors and biochips development. In this work we investigate the adhesion and survival of rat cortical neurons on positively charged surface. We bind amino-functionalized thiol (Amino-EG6-undecanethiol) on Au nanoparticles that are immobilized on surfaces with varying density. The neural cell survival and adhesion is studied on the Au nanoparticles that work as carriers for positive charges. The Au nanoparticles attachment is done by silanizing a Si/SiO2 surface with amino terminated silane (APTES) and on

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Abualnaja, Khamael. "An investigation of the effect of metal nanoparticles on the optical properties of silicon nanocrystals." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/3108.

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This thesis describes the characterization of two types of nanocrystalline material i.e. alkylated silicon nanocrystals (C11-SiNCs) and commercial silicon nanocrystals (SiNCs). The research presented throughout this work also shows that the optical properties of silicon nanocrystals can be affected by erbium ions and metal nanoparticles. The main goal of this characterization is to observe the energy transfer from the excited state of SiNCs to the erbium for optical fiber technology applications. Also, SiNCs have applications in biology as fluorescent labels. Porous silicon was prepared succes

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Leach, William Thomas. "Silicon nanoparticle deposition on silicon dioxide and silicon nitride techniques, mechanisms and models /." 2002. http://wwwlib.umi.com/cr/utexas/fullcit?p3114765.

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Chiou, Bo-Jui, and 邱柏瑞. "Fabrication and Magnetic of Silicon Nanoparticles." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/66384285584566873795.

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Wei-Jhih, Ou, and 歐威志. "Fabrication of Silicon from Direct Electrolytic Reduction of Silicon Dioxide Nanoparticles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/72855996688968402946.

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碩士<br>國立臺灣師範大學<br>化學系<br>98<br>The direct electrolytic reduction of SiO2 nanoparticles has been achieved in molten CaCl2 at 850℃ and in LiCl-KCl-CaCl2 at 500℃ or 600℃. A new type of SiO2 contacting electrode was prepared to fix SiO2 nanoparticles. Otherwise, we achieve silicon in nanoscale from silicon dioxide nanopartic- les. We not only observe the effect of size and shape between silicon dioxide particle and reducted silicon from TEM but also crystallization at different temperature from Raman spectra. Good crystalline at higher temperature and less crystalline at lower temperature. On the

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Hu, Shu-Ming, and 胡書銘. "Adsorption of Gold Nanoparticles on Silanized Silicon Substrates." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/13135255810754931698.

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碩士<br>中原大學<br>物理研究所<br>99<br>We studied the coverages of gold colloidal nanoparticles deposited on organosilanized silicon substrates for different pH values of gold colloids. The gold nanoparticle submonolayer films were formed by deposition of gold nanoparticles (diameter=18 nm) on (3-Aminopropyl)-trimethoxysilan (APTMS) covered substrates. When the deposition time increases, the number of adsorbed gold nanoparticles increases. If the time is long enough, the nanoparticle adsorption becomes saturated. The time-adsorption curve shows exponential decay behavior. We used HCl and NaOH solution t

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Lu, Chien Ming, and 盧建明. "Efficiency improvement of silicon solar cells using plasmonic nanoparticles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ke3gyf.

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碩士<br>長庚大學<br>光電工程研究所<br>105<br>In this study,dilute nano-silver solution was coating on the surface of silicon solar cells that its surface plasmonic structure can prompt the absorption of the solar cell, thereby enhancing the correspondent efficiency. In the first part, the correspondent concentration of diluted nano-silver solutions 10%, 20%, 30% and 40% are coated on the anti-reflective layer of each silicon solar cell which has a size of 2x 2 mm2 . The second part is coated with the toluene liquid and annealed. The third part of this thesis is the large-scale, 156 x 156 mm2, solar cells c

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