Dissertations / Theses on the topic 'Carbonatic and metallic surface'
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Chandrasekaran, Shankar. "Surface micromachined hollow metallic microneedles." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15505.
Full textAbboud, Jaafar Hadi. "Laser surface alloying of titanium by metallic and non-metallic additions." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47732.
Full textWong, Hoi-man, and 黃凱文. "Surface modification of biodegradable metallic material." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290689.
Full textWong, Hoi-man. "Surface modification of biodegradable metallic material." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41290689.
Full textChen, Zhuo. "Grating coupled surface plasmons in metallic structures." Thesis, University of Exeter, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441770.
Full textIyer, Srinivasan. "Effects of surface plasmons in subwavelength metallic structures." Doctoral thesis, KTH, Optik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103613.
Full textQC 20121017
Dorcéna, Cassandre Jenny. "Effects of Metallic Nanoalloys on Dye Fluorescence." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35057.
Full textMaster of Science
Samuel, Sonia Banerjee Rajarshi. "Surface engineering and characterization of laser deposited metallic biomaterials." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3618.
Full textLeung, Kit-ying, and 梁潔瑩. "Anti-bacteria plasma-treated metallic surface for orthopaedics use." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41633994.
Full textSamuel, Sonia. "Surface Engineering and Characterization of Laser Deposited Metallic Biomaterials." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3618/.
Full textLeung, Kit-ying. "Anti-bacteria plasma-treated metallic surface for orthopaedics use." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41633994.
Full textMousselli, Jad. "On surface electropolishing for the development of metallic stents." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/36574.
Full textCardiovascular diseases (CVD) are responsible for about one-third of all death cases in Canada. One of the solutions used to solve this problem is using a metallic device made of a mesh and called a stent. Stents are small devices that are implanted in narrowed blood vessels to restore blood flow and to avoid a heart attack or stroke and to treat brain aneurysms. An accurate surface control is needed to assure the cytocompatibility of the chosen alloy with its biologic environment. Metallic stents must satisfy precise conditions defined according to their final application. They need to respect strict requirements, in terms of mechanical properties, electrochemical interaction (corrosion) and cytocompatibility. The following alloys are traditionally used in biomedical applications and more precisely for cardiovascular applications: the alloy AISI316L is considered a reference in this field, but the alloy L605, a Co-based material, is gaining more and more importance, due to its high mechanical properties (high ductility and high ultimate tensile strength) and high corrosion resistance. The use of Titanium alloys is the new frontier for biomaterials in cardiovascular applications, it is considered as a new potential candidate for cardiovascular stents. Titanium alloys, shows a unique combination of high strength and high ductility (ultimate tensile strength and uniform deformation higher than 1000 MPa and 30%, respectively). Electropolishing is a pre-treatment step applied to these alloys to obtain chemically homogeneous surfaces, covered with a uniform and amorphous oxide layer, generally with a very smooth roughness. This process not only makes it possible to control the physical properties of the surface, but also the chemical ones. The electropolishing process has some changeable variables, such as current, voltage, electrolytic solution and temperature of electrolyte. By controlling them, it is possible to understand and improve the surface properties. This work is aimed at studying the effects of electropolishing changeable variables (current, voltage, electrolytic solution) on surface characteristics/properties (morphology, chemical composition and wettability) of those alloys used for the manufacture of stents.
Watts, Richard Adrian. "The optical response of metallic diffraction gratings." Thesis, University of Exeter, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361343.
Full textCraib, Glenn R. G. "Thin film structural determination and surface analysis." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320771.
Full textPike-Wilson, Emily Alexandra. "Flow boiling of R245fa in vertical small metallic tubes." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10625.
Full textGarnier, Jérôme. "Polymer electrochromism and surface plasmons combined on metallic diffraction gratings." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11522.
Full textAll conducting polymers are potentially electrochromic, owing to the injection of charge carriers that changes their electronic structure and results in a shift of their optical absorption towards higher wavelengths. PEDOT-PSS and PEDOT-S are very promising materials in terms of electrochromic properties, due to the good contrast existing between their doped and undoped forms. However this contrast has to be enhanced in order to design more efficient electrochromic devices, and new solutions should thus be found in order to solve this issue.
Surface plasmons are described as electromagnetic waves propagating along the surface between a dielectric and a metal. Coupled to an incident radiation, they create an energy loss in the light transmitted and reflected by the interface. When the metallic surface is periodically corrugated, this absorption phenomenon due to plasmonic resonance occurs at a specific wavelength that depends on several parameters, such as the incidence angle, the dielectric constants of the two media and the grating period. By coating metallic gratings with electrochromic polymers, we may thus be able to trigger a plasmonic absorption at a given wavelength and shift it upon reduction or oxidation of the material.
Electrochromic devices consisting of PEDOT-PSS or PEDOT-S spin-deposited on gold and silver gratings were investigated by UV-visible reflectance measurements. The periodically corrugated structures were reproduced from commercial gratings by soft nanolithography and were analyzed by AFM. Some electrochromic cells exhibited new colors or a high shift of the plasmonic resonance upon redox switching of the polymer film. Depending on the step and the nature of the grating employed, this shift could reach 20 nm in the case of PEDOT-PSS and more than 100 nm for PEDOT-S. A theoretical model was found to predict the wavelength of plasmonic excitation and the orientation of the shift.
Walker, Andrew Meredith. "Laser surface alloying of metallic substrates with carbon and silicon." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38178.
Full textWent, Hazel Elizabeth. "Surface plasmon resonances in deep metallic gratings at microwave frequencies." Thesis, University of Exeter, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248177.
Full textAbtahi, Seyyed Mohammad Hossein. "Synthesis and characterization of metallic nanoparticles with photoactivated surface chemistries." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/78081.
Full textMaster of Science
Hou, Xiaoning. "Surface Topographies and Mechanical Properties of Metallic Biomaterials Processed by Ultrasonic Nanocrystal Surface Modification (UNSM)." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555602578757154.
Full textKitchens, Christopher Lawrence Roberts Christopher B. "Metallic nanoparticle synthesis within reverse micellar micromulsion systems." Auburn, Ala., 2004. http://repo.lib.auburn.edu/EtdRoot/2004/FALL/Chemical_Engineering/Dissertation/kitchcl_13_Dissertation(abbrv).pdf.
Full textEdmunds, James David. "Microwave transmissivity of sub-wavelength metallic structures." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3214.
Full textAyyagari, Venkata A. "Surface Degradation Behavior of Bulk Metallic Glasses and High Entropy Alloys." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062863/.
Full textWilliams, Shaun Michael. "Characteristics and applications of the infrared enhanced transmission of metallic subwavelength arrays." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1147279544.
Full textVenkata, Pradeep Kumar Garudadri. "SURFACE WAVE SCATTERING FROM METALLIC NANO PARTICLES: THEORETICAL FRAMEWORK AND NUMERICAL ANALYSIS." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukymeen2006t00408/Thesis%5FPGV%5FFinal%5Fn.pdf.
Full textTitle from document title page (viewed on June 1, 2006). Document formatted into pages; contains ix, 94 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 91-93).
Viik, Rickard. "Surface layer formation on the surfaces of metallic lithium, copper and iron." Thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257571.
Full textRyu, Jae-Joong. "Surface damage of metallic implants due to mechanical loading and chemical reactions." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3355528.
Full textTo, Theany. "Fracture toughness and fracture surface energy of inorganic and non-metallic glasses." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S013/document.
Full textFracture toughness and fracture surface energy of commercial and laboratory glasses, glass-ceramics and glass matrix composites have been studied. First, bi-axial bending test (RoR configuration) was performed on fused silica and window float glasses with different surface conditions to identify the relationship between the surface flaw, the strength and fracture toughness. After, three experiment methods, mainly single-edge precracked beam (SEPB), chevron-notched beam (CNB) and Vickers indentation fracture (VIF) were performed to determine the fracture toughness of four commercial known glasses and to determine the advantages and inconveniences of the different selected methods. The method that is appeared as the most reliable and self-consistent, the SEPB (Single Edge Precrack Beam) method, was applied to determine the toughness of the large amount of glasses and glass-ceramics, to study the influence of the composition and the microstructure on the characteristics of cracking (KIC and fracture energy, γ). Last but not least, the influence of the temperature and environment on the fracture toughness was studied by means of the SEPB method. Two oxide glasses were tested in elevated temperatures and with the loading rate of 10 MPa∙√m/s, a transition temperature of 1.11Tg was found. Four other oxide glasses were tested in the inert environment and the same fracture toughness values were obtained from (100 times) two different cross-head speeds
Ropers, Claus. "Femtosecond excitations in metallic nanostructures." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2007. http://dx.doi.org/10.18452/15664.
Full textThis thesis contributes to the understanding of optical excitations in metallic nanostructures. In experiments on selected model structures, the dynamics of these excitations and their electromagnetic spatial modes are investigated with femtosecond temporal and nanometer spatial resolution, respectively. Angle- and time-resolved transmission experiments on metallic thin film gratings demonstrate the dominant role resonant surface plasmon polaritons (SPPs) play in the optical properties of such structures. The lifetimes of these excitations are determined, and it is shown that coherent couplings among SPP-resonances result in drastic lifetime modifications. The spatial SPP mode profiles are imaged using a custom-built near-field optical microscope. The experiments reveal a direct correlation between the spatial mode structure and the dynamics of different SPP resonances. These findings allow for an interpretation of the near-field optical image contrast in terms of the contributions of different vectorial components of the electromagnetic near-field. A selective imaging of different electric and magnetic field components is demonstrated for various types of near-field probes. Furthermore, the excitation of SPPs in periodic structures is employed in a novel type of near-field tip. The resonant excitation of SPPs in a nanofabricated grating on the shaft of a sharp metallic tip results in their concentration at the tip apex. The final part of the thesis highlights the importance of optical field enhancements for the local generation of nonlinear optical signals at the apex of sharp metallic tips. Specifically, the observation of intense multiphoton electron emission after femtosecond excitation is a major result. This process is thoroughly characterized, and a novel scanning microscopy application based on this effect is presented. In this technique, an image contrast with nanometer resolution arises from spatially varying electron emission rates.
Starr, David E. "Microcalorimetric heats of adsorption, surface residence times and sticking probabilities of metals on metal-oxide, and silicon substrates /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8492.
Full textYin, Liang. "Reactive wetting and spreading in binary metallic systems." Diss., Online access via UMI:, 2005.
Find full textComite, Valeria. "Studio dei processi di degrado naturale e simulato in rocce carbonatiche." Doctoral thesis, Università di Catania, 2014. http://hdl.handle.net/10761/1568.
Full textKhullar, Piyush. "Development and Implementation of Novel Bristle Tool for Surface Treatment of Metallic Components." [Milwaukee, Wis.] : e-Publications@Marquette, 2009. http://epublications.marquette.edu/theses_open/10.
Full textDarugar, 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/.
Full textZhang, John, Committee Member ; Wang, Zhong, Committee Member ; El-Sayed, Mostafa, Committee Chair ; Orlando, Thomas, Committee Member ; Lyon, Andrew, Committee Member.
Egbujor, Grace. "Surface Microstructure Evolution of Metallic Specimens Using the Large Chamber Scanning Electron Microscope." TopSCHOLAR®, 2015. http://digitalcommons.wku.edu/theses/1473.
Full textTaylor, John Abner. "Effects of a Surface Engineered Metallic Coating on Elastomeric Valve Stem Seal Leakage." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2690/.
Full textSamarjy, Ramiz Saeed Matti. "Interaction mechanisms for a laser-induced metallic boiling front." Doctoral thesis, Luleå tekniska universitet, Produkt- och produktionsutveckling, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65281.
Full textTang, Feng. "Micro SERS sensors based on photonic-plasmonic circuits and metallic nanoparticles." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0020/document.
Full textSurface-enhanced Raman spectroscopy (SERS) is widely used as a non-intrusive and label-free tool to identify the molecular spectral fingerprints in pharmacology, biology, etc. This thesis presents a SERS sensor based on the hybrid waveguide made of metallic (Au/Al) slots and dielectric (Si3N4) strips and a method to improve the SERS-detection capacity by placing metallic nanoparticles into the sensor’s slot. The theoretical investigation of the sensor is mainly conducted by the 3D finite-difference time-domain method (3D-FDTD) which provides the broadband electromagnetic response of metallic nanostructures. The enhancement factors in the sensor’s slot are estimated based on the |E|4-approximation. The experiments are mainly the fabrication of metallic slots, which is conducted by the electron beam lithography (EBL), and the characterization of the SERS-detection capacity of the sensors. The results show that the Raman signals given out by the SERS sensors are detectable. Metallic nanoparticles, which are located in the sensor’s slot, can improve dramatically the SERS-detection capacity. By combining the SERS sensor with the extended photonic and electronic elements, a fully integrated-on-chip SERS detection system on a chip can be developed in the near future for portable and stable SERS detections
Steinsiek, Christoph. "Molecular Beam Scattering from Ultrathin Metallic Films." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2017. http://hdl.handle.net/11858/00-1735-0000-0023-3EB8-2.
Full textChalastaras, Athanasios. "Giant magnetoresistance in magnetic multilayers using a new embossed surface." ScholarWorks@UNO, 2004. http://louisdl.louislibraries.org/u?/NOD,137.
Full textTitle from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Physics."--Thesis t.p. Vita. Includes bibliographical references.
Hervier, Paul. "Fonctionnalisation de surface de verres métalliques base Zirconium." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI088/document.
Full textMetallic glasses are recent materials. First developed in the 60s, they are well-known for their high mechanical resistance and their ability to become viscous at relatively low temperatures. Functionalization of their surfaces is a promising way to further increase their properties. However, their amorphous structure is in a metastable state and maintaining them at too high temperatures leads systematically to their crystallization, and thus the loss of their unique properties. Most of surface treatment techniques are performed at high temperatures and thus are not adapted to these materials. In this work, two innovative techniques which are thermoforming and ultra-short pulse duration laser treatment have been used and allow to texture the surfaces of the alloys by avoiding their crystallization. This thesis is focused on the effect of these two processing techniques on physical and chemical properties of Zr-based bulk metallic glasses and thus on the modification of their surface properties such as wettability or corrosion resistance. We will see that both techniques present their advantages and can be particularly adapted for biomedical applications
Altzar, Oskar. "Surface Characteristics and Their Impact on Press Joint Strength." Thesis, KTH, Mekanisk metallografi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-205919.
Full textHumphrey, Alastair Dalziell. "Exploration of how light interacts with arrays of plasmonic, metallic nanoparticles." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/19365.
Full textSmith, Randall William. "Investigations of the Air-Water Interface: A Structural Analysis of Metallic Surface Films and Aquatic Surface Films by Comparative Microscopy." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2306.
Full textDrisko, Glenna L. "Template synthesis and surface modification of metal oxides /." Connect to thesis, 2010. http://repository.unimelb.edu.au/10187/7090.
Full textBergström, David. "The absorptance of metallic alloys to Nd:YAG and Nd:YLF laser light." Licentiate thesis, Luleå tekniska universitet, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18217.
Full textGodkänd; 2005; 20061213 (haneit)
Fostner, Shawn. "Ultra high vacuum fabrication of metallic contacts for molecular devices on an insulating surface." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95011.
Full textLa préparation et la caractérisation de fils métalliques sur des substrats isolants par une variété de mécanismes a été explorée. Une approche multi-échelle utilisant des masques-stencils microfabriqués de silicium, l'électromigration contrôlée par rétroaction, et le dépôt induit par champ en nouvelle géométrie d'agrégats métalliques, a été explorée sur des substrats de bromure de potassium (KBr), de phosphure d'indium (InP) et d'oxyde de silicium sous Ultra Haut Vide (UHV). Le dépôt initial de fils d'or et de tantale entre cent nanomètres et quelques micromètres a été réalisé en utilisant des nanostencils au silicium renforcé. La fabrication des stencils a été discutée, et un examen de la déformation des structures intégrées dans le cas du dépôt de couches de tantale sous hautes contraintes a montré qu'elle était significativement plus petite que pour les structures typiques. Les fils métalliques déposés à l'aide de ces stencils, ainsi que la lithographie par faisceau électronique ont été mis sous contrainte électriquement et les caractéristiques de rupture analysées. Des vides typiques à l'échelle du nanomètre ont été observés, ainsi que des structures communément retrouvées dans la rupture de structure de type bambou dans les fils d'or de 100nm et moins, en particulier avec une résistance en série importante. Ces vides plus grands devraient être plus applicables pour le dépôt par la suite d'agrégats métalliques et la préparation de dispositifs moléculaires. Une étape a été franchie vers la connexion des fils déposés initialement ainsi que de molécules localisées de façon imageable, en réalisant un modèle et des expériences de dépôt induit par champ d'agrégats d'or sur KBr et InP. Le dépôt sur des substrats InP avec derrière un gaz d'électrons 2D comme contre-électrode a démontré la faisabilité de cette technique de dépôt sous UHV. Des dépôts ultérieurs sur ou
MATARRESE, CATERINA. "Co-solvents and chelating agents confined in complex fluids for the cleaning of surfaces of works of art." Doctoral thesis, 2015. http://hdl.handle.net/2158/984618.
Full textWEI, HAN-DONG, and 魏漢東. "Surface second-harmonic generation for studying properties of metallic surface." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/75242261483238514562.
Full textLin, Shih-Ya, and 林詩雅. "Surface Plasmon Polariton on Metallic Micro-ring." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/31341315288188832327.
Full text國立中央大學
照明與顯示科技研究所
104
In this thesis, we study the surface plasmon polariton effect on a metallic micro-ring to generate a nano-magnetic field. The structure consists of a metallic micro-ring and InGaAs pulley-type waveguide on GaAs substrate. COMSOL Multiphysics is used to analyze the device. Positive charges are positioned on the metallic micro-ring. The surface plasmon polariton is induced on the surface of metallic micro-ring by launching the light into the InGaAs waveguide. The propagation of the surface plasmon polariton along the direction of the incident light drives the charge flow to form an electric current on the metallic micro-ring. According to Biot-Savart law, it can form a nano-magnetic field in the center region of the metallic micro-ring.