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Dissertations / Theses on the topic 'IrO2'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Kahk, Juhan Matthias. "Spectroscopic studies of IrO2 and Bi2Ir2O7." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/40495.

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The oxides of iridium, a 5d transition metal, have recently attracted interest in a number of scientific disciplines, ranging from fundamental solid state physics, to more applied areas of research such as spintronics and catalysis. The metallic oxides IrO2 and Bi2Ir2O7, in particular, are known to be good catalysts of the commercially important oxygen evolution reaction; IrO2 has also been identified as a promising material for spin current detection, and Bi2Ir2O7 has received attention due to its unusual magnetic response at low temperatures. In the work reported in this thesis, X-ray photoe

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2

Dreifus, Driele Von. "Investigação das propriedades magnéticas de amostras de IrO2 e Co:IrO2 sintetizadas via método de Pechini." Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/5028.

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Made available in DSpace on 2016-06-02T20:16:47Z (GMT). No. of bitstreams: 1 3337.pdf: 3467265 bytes, checksum: 529eb6b6e21347d13906d054f5528d34 (MD5) Previous issue date: 2010-08-31<br>Financiadora de Estudos e Projetos<br>In this work the magnetic properties of iridium oxide synthesized via Pechini s method and doped with different concentrations of cobalt were studied. The proposal was to investigate the possibility of applying it as a diluted magnetic oxide (DMO1). The samples were characterized by x-ray diffraction to study the structural features by Rietveld refinement, which indicated

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3

González, Forero Danilo. "Automatized Nanoparticle Models Generation and Application to the Oxygen Evolution Reaction Catalyzed by IrO2. Slab vs Nanoparticle Models." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/671127.

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Les nanopartícules tenen un gran impacte en múltiples camps científics principalment a causa d’i) la seva gran superfície específica i ii) la possibilitat d’ajustar l’estructura electrònica del material modificant la seva grandària i forma. Això és especialment rellevant en el camp de la catàlisi amb metalls de transició. Per a caracteritzar les propietats catalítiques de les nanopartícules s’han desenvolupat diverses tècniques experimentals i computacionals. No obstant això, la majoria dels esforços computacionals dedicats a comprendre l’activitat catalítica de les nanopartícules empren super

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Pellegrino, Rosangela Rodrigues Leme. "Desenvolvimento de um reator de fluxo com anodo de Ti/IrO2-Ta2O5 para a oxidação eletroquimica do fenol." [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264104.

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Orientadores: Caio Glauco Sanchez, Rodnei Bertazzoli<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-07-26T12:30:54Z (GMT). No. of bitstreams: 1 Pellegrino_RosangelaRodriguesLeme_M.pdf: 2600829 bytes, checksum: c928ac2b68a68cadd0273ac6f3f50c77 (MD5) Previous issue date: 2000<br>Resumo: Atualmente há uma grande preocupação com a preservação do meio ambiente, principalmente em relação ao destino de efluentes aquosos industriais contendo compostos orgânicos, dentre estes compostos destacam-se os solventes clorad

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5

Pipi, Angelo Ricardo Fávaro. "Oxidação dos herbicidas Diuron e Alaclor através de processos eletroquímicos oxidativos avançados utilizando ânodos: Ti/IrO2, Ti/RuO2, Pt e BDD." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-04072014-110134/.

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A degradação do herbicida Diuron comercial (Nortox SA) foi realizada utilizando os ânodos Ti/RuxTi(1-x)O2 e Ti/IrxTi(1-x)O2 (x = 0,3; 0,5 e 0,7). A investigação da degradação foi conduzida na presença e na ausência de cloreto. O estudo da remoção do herbicida em função da densidade de corrente na ausência de cloreto rendeu remoções de 41 e 49% de demanda química de oxigênio (DQO) e remoções de 10 e 14% de carbono orgânico total (COT) a 100 mA cm-2, respectivamente. Mantendo-se o tempo de eletrólise constante (4 h), a composição do ânodo Ti/Ru0,7Ti0,3O2 foi determinada como a mais ativa para re

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6

Yamanaka, Koji. "Stabilization of iron regulatory protein 2, IRP2, by aluminum." Kyoto University, 2000. http://hdl.handle.net/2433/180826.

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Ravindranath, Velaga M. "Elucidating the role of mitoferrin (Mfrn), iron regulatory proteins (IRP1 and IRP2) and hephaestin (Heph) in iron metabolism by tagSNP and protein-protein interaction (PPI) analysis." Thesis, London Metropolitan University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639414.

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Precisely how Hephaestin (Heph) facilitate iron release from cells is poorly understood. The work in this thesis tried to establish the role of different iron metabolic proteins, Mitoferrin (Mfrn), IRPs and Heph in iron homeostasis. Analysis of 18 tagSNPs in the Mfrn gene was carried out in an AsianCaucasian population to establish any correlation between the Mfrn tagSNPs, haemoglobin levels and birth weight in the presence of covariates such as sex of the fetus, gestational age and mother's booking weight. Two-way ANCOVA analysis was carried out to check if the covariates have any influence o

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8

Marohn, Britta [Verfasser]. "Eisenstoffwechsel im Maushoden : die Bedeutung von IRP2 (Iron Regulatory Protein 2) für die testikuläre Eisenhomöostase in der Maus / Britta Marohn." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1043712313/34.

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9

Nuttall, Robert Horan. "Aqueous hydrogen sulphide corrosion of iron, iron/chromium and iron/nickel alloys." Thesis, Robert Gordon University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358471.

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10

Bramhagen, Ann-Cathrine. "Iron nutrition during early childhood factors influencing iron status and iron intake /." Malmö : Lund University, 2006. http://theses.lub.lu.se/scripta-archive/2006/04/13/med_1297/bramhagen_kappa.pdf.

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11

Myhrman, Carl. "An Iron Lady for an Iron Throne." Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-23005.

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Syftet med denna uppsats är att undersöka hur kvinnlighet framställs för att konstruera feministikonen Daenerys Targaryen i TV-serien Game of Thrones. För att uppnå mitt syfte har jag analyserat Daenerys karaktär samt personer hon interagerar med i serien. Jag har använt mig av en semiotisk bildanalys. Min teorianknytning utgörs huvudsakligen av feministisk medieforskning samt feministiska åskådningar. Materialet för min studie utgörs av fem scener från serien. Resultaten visar att framställningen av Daenerys karaktär blir en konstruktion av kvinnan med speciella band med naturen som för en ka

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12

Chua-anusorn, Wanida. "Iron oxide deposits in iron overload diseases." Thesis, Chua-anusorn, Wanida (1997) Iron oxide deposits in iron overload diseases. PhD thesis, Murdoch University, 1997. https://researchrepository.murdoch.edu.au/id/eprint/52151/.

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Iron overload diseases such as thalassaemia are a major public health problem in many parts of the world. Excess iron deposited in such tissues occurs in the form of ultrafine particles of iron oxyhydroxide. At low levels of iron loading, the iron(III) oxyhydroxide particles are mostly found in the iron storage protein, ferritin. At higher levels of loading, iron(III) oxyhydroxide particles are found in insoluble aggregates known as haemosiderin. Three different structures of these iron deposits are known: (i) ferrihydrite (5Fe203.9H20), (ii) poorly crystalline goethite (α-FeOOH), and (iii) no

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Pappas, Adlerburg Nickolas T. "To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-144383.

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This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on

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Pappas, Adlreburg Nickolas. "To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694.

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This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on

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15

Al-Othman, Abdulaziz Mohammad. "Iron intake and iron deficiency in young children." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/26072.

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These studies have sought to assess iron intake in young children (9-36 months), to identify nutritional and other factors that may affect iron intake and iron status. A 4-day weighted food inventory, a semi-quantitative food frequency and social questionnaire and anthropometric measurements were used. Haemoglobin (Hb), mean corpuscular volume (MCV), serum ferritin (SF), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC) and haematocrit (Hct) were estimated in blood. <I>Studies in Saudi Arabia</I>: 104 healthy children randomly chosen from eight different hea

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Bergquist, Bridget A. 1973. "The marine geochemistry of iron and iron isotopes." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/53550.

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Thesis (Ph. D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and, the Woods Hole Oceanographic Institution), 2004.<br>Includes bibliographical references.<br>This thesis addressed questions about the Fe cycle by measuring detailed profiles and transects of Fe species in the ocean and also by exploring the use of a new tracer of Fe, Fe isotopic fractionation. In the subtropical and tropical Atlantic Ocean, transects and profiles are presented for dissolved Fe ([less than]0.4 m), soluble Fe ([less than]0.02 gm), and c

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17

Long, Christopher Allen. "Kinetics and morphological study of interdiffusion in iron-carbon/iron-vanadium or iron-molybdenum couples /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu148759680782343.

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18

Fit, Magdalena Katarzyna. "Iron uptake systems and iron regulation in Clostridium difficile." Thesis, University of Nottingham, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595313.

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Clostridium difficile, a Gram-positive, anaerobic, spore-former is the major cause of antibiotic associated diarrhoea and is also associated with more severe, sometimes life threatening disease. To date little research has been carried out on iron uptake mechanisms and their regulation in C. difficile. In common with other pathogens, iron is likely to be an essential growth factor necessary for the survival of the organism. Conversely, an over-abundance of iron might be toxic, therefore uptake is likely to be strictly regulated. Analysis of available genome sequences reveals the presence of se

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Chirikure, Shadreck. "Iron production in Iron Age Zimbabwe : stagnation or innovation?" Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1444570/.

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In conventional reconstructions of southern African archaeology, it has been assumed implicitly or explicitly that the production of iron was unchanging for close to 1500 years. This view was sustained despite the evidence for distinct methods of smelting that were encountered. Clearly, studies which explore the possibility of historical change in production need to be undertaken. This thesis addresses the issue of change by developing a long term perspective on iron production in Zimbabwe. The hypothesis that change is inherent to iron production was examined through ethnohistorical/ethnograp

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Wright, Jack Daniel. "Magnetism and superconductivity in iron pnictides and iron chalcogenides." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:c1f7563a-275f-415f-993e-98313b517296.

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This thesis presents a study on several series of unconventional Fe-based superconductors; namely, derivatives of NaFeAs and LiFeAs, as well as molecular-intercalated FeSe. Primarily using muon spin rotation (SR), but also x-ray diffraction (XRD) and magnetic susceptibility measurements, the nature of both magnetic and superconducting phases within these systems is studied. Particular attention is focussed on how these states compete or coexist with one another. The aforementioned experimental techniques are first used to explore the phase diagram of NaFe1xCoxAs. This phase diagram includes re

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Jackson, Roy. "Oxidation and morphology of iron and iron alloy droplets." Thesis, Sheffield Hallam University, 1987. http://shura.shu.ac.uk/19863/.

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The oxidation characteristics of iron droplets and a range of binary iron alloy droplets have been investigated at 1600°C. The droplets were generated by a novel technique of melting the iron or iron-alloy, in the form of wire, in a levitation coil. The droplets were held for several minutes in hydrogen prior to releasing them into a mass transfer column separated from the levitation chamber by a thin plastic film. The oxidised droplets were quenched. The oxidising or reducing characteristics of various quenching media were investigated and silicone oil was selected as the quenchant. Pure iron

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Wang, Da-yung. "Simultaneous chrominizing-aluminizing of iron and iron-base alloys /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487325740721186.

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23

Ho, Ho-chuen Federick. "Ferrous metal balance of Hong Kong : consumption, waste generation, recycling and disposal /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18734893.

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Hamilton, Jasmine La Juanie. "Innovative polymeric iron chelators with iron binding affinity and biocompatibility for the treatment of transfusional iron overload." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52624.

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Desferrioxamine (Desferal®, DFO), deferiprone (Ferriprox®, L1) and desferasirox (Exjade®, ICL-670) are clinically approved iron chelators used to treat transfusion associated iron overload, a common condition in patients with severe hemoglobin disorders like β-thalassemia, sickle-cell disease and the myelodysplastic syndromes. The poor pharmacokinetics and inefficacy of iron chelators necessitate administration of almost maximum tolerated doses to achieve adequate iron removal. This causes toxicity ranging from neurological dysfunction in DFO users, agranulocytosis and neutropenia in L1 users,

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Vissers, Jennifer N. "Iron consumption knowledge for the prevention of iron deficiency and iron deficiency anemia among college-aged women /." View online, 2007. http://repository.eiu.edu/theses/docs/32211131494846.pdf.

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Maddocks, Sarah Elizabeth. "Iron metabolism in bacteria : examination of the Feo system (Ferrous iron transporter) and Dps-iron storage proteins." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434313.

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Ummadi, Madhavi. "Uptake, Absorption, and Adsorption Kinetics of Ferrous and Ferric Iron in Iron-replete and Iron-deficient Rats." DigitalCommons@USU, 1994. https://digitalcommons.usu.edu/etd/5409.

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Various concentrations of ferrous and ferric iron solutions were held at room temperature for 60 min before they were assayed for ferrous iron, which may be unstable due to oxidation. The ferrous and ferric solutions (in pH 2 HCl) were maintained as such for 60 min without the use of chelators. There was no significant oxidation of ferrous iron. Also, four different levels of each ferrous and ferric iron were injected into proximal duodenal loops of rat intestine and uptake was determined at four different time intervals. Two iron-replete rats were assigned to each of the treatments. The in si

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Smith, Graham Alan. "Systematic reviews regarding iron and iron supplementation in blood donors." Thesis, University of Portsmouth, 2014. https://researchportal.port.ac.uk/portal/en/theses/systematic-reviews-regarding-iron-and-iron-supplementation-in-blood-donors(da3fb42d-07d1-404a-b5ff-baff940f8e70).html.

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Background: Blood donors are required to exceed a minimum haemoglobin level before they donate; those who fail are temporarily deferred from blood donation. In this way, donor health, and that of the recipient (patient), is assured and a drain on blood collection resource is avoided. Knowing what factors contribute to donors failing to reach these levels and whether provision of iron supplements decrease deferral rates would prove beneficial to blood collection agencies. Methods: Two systematic reviews of available literature were conducted after searching on-line databases. The first looked a

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Georgaki, Irene. "Characterisation of iron-rich sludge for desensification and iron recycling." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411720.

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Pritchard, Ruth. "Studies of Iron (II) and Iron (III) spin crossover compounds." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487772.

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Carver, Aaron Dalnamath. "Selective Oxidations by Iron(III) Porphyrins and Iron(III) Corroles." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1395.

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The selective oxidation of organic compounds represents a leading technology for chemical industries. They are used in chemical synthesis in the pharmaceutical and petrochemicals industries, and possible the decontamination of harmful substances. However, oxidations reaction are among the most challenging processes to control. Many stoichiometric oxidants with heavy metals are expensive, or toxic maybe both, and therefore unfeasible to be utilized. The ideal processes for catalytic oxidation would use molecular oxygen or hydrogen peroxide as the primary oxygen source, with transition metal cat

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Hutchinson, Carol. "Iron absorption and serum non-transferrin bound iron in humans." Thesis, King's College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429314.

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Chuang, Chien-Fang, and 莊健峰. "Theoretical Study of methanol adsorption and dehydrogenation on IrO2(110), Ir/IrO2(110) and O/IrO2(110) surface." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/99003166765248435528.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>96<br>Periodic, Density Functional Theory (PW91-GGA) calculations are used to study competitive paths for methanol decomposition on rutile-type IrO2(110), 1/2ML Ir/ IrO2(110), and Oxygen rich IrO2(110) surface. The energy barriers for all the elementary steps, starting with O—H scission and proceeding via sequential hydrogen abstraction from the resulting methoxy intermediate, are presented here. The minimum energy path is represented by a potential energy connecting methanol with its final decomposition product, carbon monoxide (CO). For methanol decomposition on I

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Ding, Muh Tsheng, and 丁木村. "The Electrochemistry of WO3 and IrO2 thin film and WO3/IrO2 based electrochemical diode." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/35802735669111884114.

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碩士<br>國立交通大學<br>電子物理學系<br>84<br>The electrochromism of sputtered tungsten trioxide(WO3)film and iridium oxide(IrO2) film were characterized by cyclic voltammetry.Cyclic voltammograms show WO3 has mmore positive potential in acid solutions;small charge transfer rate constant(~10^-2 s^-1(mol/cm^3)^-2) andhydrogen diffusion coefficient(~10^-9cm^2/s). IrO2 thin film electrodescyclic voltammetric current that is propontial to the scan rate in therange 1-500 mV/s. The current is capacitive and

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Chen, Ching-Chang, and 陳慶昌. "Device based on WO3/IrO2 without Electrolyte." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/n554ms.

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碩士<br>國立交通大學<br>電子物理系所<br>92<br>This article made a main research into which based on WO3╱IrO2 diode device without electrolyte. We deposited WO3 and IrO2 thin films on platinum electrodes and made the parts of these thin films were overlap. The interface of these thin films formed a diode structure. These thin films are fabricated by the lift-off technique with reactive magnetron sputtering at deposition temperature 100℃ and these devices were package with epoxy. The mechanism of the device was based on double injection, which IrO2 thin film may have H＋. When we plus electron and H＋, the diod

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Wang, Pi-Hsien, and 王必先. "STM Studies of IrO2 Single Crystal Surfaces." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/39120928731989323827.

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碩士<br>國立臺灣科技大學<br>材料科技研究所<br>94<br>We present scanning tunneling microscopy (STM) studies of Iridium dioxide (IrO2) single crystal surfaces. Using a cross-sectional STM setting and in-situ cleaving technique in ultrahigh vacuum, we have successfully obtained atom-resolved images of several IrO2 faces, e.g., (110), (120), (130), and (67 ) for the first time. To obtain different miller planes, samples with thickness less than 100 microns must be oriented by X-ray diffractometry precisely. Our approach appears generally applicable for other oxides lacking natural cleavable planes. Bridge oxyge

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Hsu, Chienchung, and 徐建忠. "The Improvement of IrO2-based Sensing Device." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/19393985463011377950.

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碩士<br>國立交通大學<br>物理研究所<br>87<br>A new H+-sensing Electrode based on sputtered Ta2O5 and IrO2 thin film. The mechanism is that only H+ can pass through Ta2O5 film. To insulate IrO2 film from intruding by other ions, IrO2 film was covered with Ta2O5 film. And the Fermi level of IrO2 film can be varied from the interaction of H+ in the electrolyte. By Nernst's equation, we can see that the potential of IrO2 film can be varied with pH value of the electrolyte. And then, we made a potentiometric CO2 sensor based on two Ta2O5-IrO2 electrodes. Both Ta2O5-IrO2 electrodes were connected and c

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Su, Yi-Chung, and 蘇頤中. "Water Activated Solid Device Based on WO3/IrO2." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/urdrdv.

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包智傑. "Electronic transport properties in RuO2 and IrO2 nanowires." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/53190202779940809346.

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碩士<br>國立交通大學<br>電子物理系所<br>97<br>RuO2 and IrO2 are the inviting electrical contact materials which exhibit the metallic conductivity properties at room temperatures. They crystallize in the rutile structures and display good thermal stability at high temperatures. We study the size effects of the transport properties of RuO2 and IrO2 nanowires using first-principles approaches. The relaxed structures of RuO2 and IrO2 bulk and nanowires are obtained based on the density functional theory. By using the force tensor we calculate the phonon dispersion relation of the RuO2 and IrO2 nanowires with di

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Shieh, Shuen-Han, and 謝學瀚. "Glucose Diode Array Microsensor Based on WO3 and IrO2." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/19464724716158366973.

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碩士<br>國立交通大學<br>電子物理系<br>86<br>A glucose diode array microsensor based on the contacts of WO3 / IrO2 sputtered thin films and glucose oxidase ( GOD ) immobilized in a solid polymer layer is constructed. Due to diode array structure, the device can be used to spatially resolved glucose concentration gradient. This device makes use of the catalysis action of GOD. Glucose is selectively oxidized in the reaction to generate H+ that can reduce current in forward direction in the microdiode. Each diode in the array can function in sensing the glucose concentration individually to yield the glu

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Chung, Wen-hung, and 鐘文宏. "Surface Study on Deoxygenation of RuO2 and IrO2 (110)." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/52095192927916269243.

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博士<br>國立臺灣科技大學<br>化學工程系<br>98<br>Deoxygenation of the RuO2 and IrO2 (110) surfaces has been investigated to understand their reduction pathways and the probable active sites of partially reduced surface. In the present study, snapshots of the RuO2 and IrO2 surfaces are analyzed during thermal reduction, using microRaman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), scanning electron microscopy (SEM), and X-ray diffraction analysis (XRD). Motivation of the current research arises from the recent experimental results, gathered by our research group, w

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Su, Chin-Yu, and 蘇勤裕. "The Study of H2S Sensing in WO3/IrO2 devices." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40730013589813406421.

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Chang, Yubin, and 張育斌. "Investigation on a Feasible Microreference Electrode Based on IrO2." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/57588882380617780789.

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碩士<br>國立交通大學<br>電子物理學系<br>85<br>A microreference electrode based on sputtered IrO2 and an internal electrolyte derived from PVA / H3PO4 / KH2PO4 has been tested. The solid electrolyte consists of a buffer. An epoxy shield separaties the electrolyte from the external environment. Only a narrow salt bridge connects with the external electrolyte. Since the concentration of H+ in the internal electrolyte remains unchanged, according to the Nernst equation, the IrO2 potential should also be co

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HUANG, WEI-CHIANG, and 黃韋強. "IrO2 Nanotube Arrays as Stimulation Electrodes for Implantable Neuroelectronics." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/66hfry.

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碩士<br>國立臺北科技大學<br>材料科學與工程研究所<br>106<br>We develop chemical bath deposition processes for conformal IrO2 depositions on TiO2 nanotube arrays. In addition, we develop an anodization process which can control tube diameters and densities of TiO2 nanotube arrays. These IrO2 nanotube arrays undergo electrochemical analysis in charge storage capacity (CSC) and electrochemical impedance to evaluate its potential as stimulation electrodes for implantable devices. Images from electron microscopes confirm the formation of uniform IrO2 on both internal and external surface of nanotubes. In addition, the

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Chen, Chao-Ting, and 陳昭廷. "Improvement on pH-Sensing Device Constructed of IrO2 and Ta2O5 Films." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/25544141179877598004.

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碩士<br>國立交通大學<br>電子物理系所<br>96<br>ISFET, Ion Sensitive Field Effect Transistor, was first proposed by Piet Bergveld in 1970 to have ion sensitivity and field-effect transistor components of micro-chemical sensors. The ISFET is in accordance with the process technology, MOSFET, and can be mass-produced. Using the RF magnetron sputtering method, iridium oxide is electroplated onto the platinum electrode as a hydrogen ion sensors film. Then a thin layer of tantalum oxide film is sputtered on the electrode as an ion-selective membrane that coats the iridium oxide. This will produce a hydrogen i

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Chaung, Yi-Lin, and 莊益林. "The Research of pH sensors based on WO3/IrO2 Diode Device." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/88693000659046491200.

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碩士<br>國立交通大學<br>電子物理系<br>91<br>This article reports the technological fabrication and the electrical characterization of pH sensors based on WO3／IrO2 diode device. We have deposited WO3 and IrO2 thin films on platinum electrodes and the part these thin films were overlap. The interface of these thin films formed a diode structure. Then the films were coated with Al2O3 thin films to modify surface. These thin films are fabricated by the lift-off technique with reactive magnetron sputtering at deposition temperature 100℃ and these devices were package with epoxy. The mechanism of the pH sensors

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Ro, Li-wei, and 羅立偉. "DFT Study of Ammonia and Methane Dehydrogenation on IrO2(100) surface." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/np3p4k.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>99<br>Density function theory calculations have been performed to investigate ammonia, and methane dehydrogenation, the coupling reactions between CHx(x = 1-2) and Ocus atom on IrO2(100) surface. The structures, energetics and vibration frequencies of the reactants, intermediates, transition states and products were determined on the stoichiometry and o-rich IrO2(100) surfaces. In addition, the H diffusion, O-H scission, H2 and H2O formation were examined. The ammonia dehydrogenation calculated results show that the dehydrogenation on IrO2(100) surface, the oxygen-ri

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Chen, Chi-An, and 陳麒安. "Synthesis and characterization of nanostructural TiO2, IrO2/TiO2 and RuO2/TiO2." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/34652134700389287204.

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博士<br>國立臺灣科技大學<br>電子工程系<br>97<br>In this dissertation, we have studied the growth conditions for the deposition of well-aligned anatase (A) and rutile (R) phases titanium dioxide (TiO2) nanocrystals (NCs) as well as IrO2/R-TiO2 and RuO2/R-TiO2 hetero-nanocrystals on various substrates via the technique of cold-wall metal organic vapor deposition (MOCVD). The source reagents used for TiO2, IrO2 and RuO2 deposition are Ti(OC3H7)4, (C6H7)(C8H12)Ir and bis(ethylcyclopentadienyl) ruthenium (II), respectively. Thermal-induced phase transformation from A-TiO2 to R-TiO2 was also studied. A detailed ch

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TSAO, JING-YUAN, and 曹景源. "Composition Optimization and Characterization of IrO2 - Based Electrocatalysts for Water Electrolysis." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/86428753059718658024.

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Chung, Tsai-Wei, and 鍾彩薇. "Synthesis and Characterization of Biocompatible Electrodes (IrO2, Pt) from Solution Process." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/34147940108728003466.

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