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Dissertations / Theses on the topic 'Electrochemical techniques'

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1

Mitchell-Smith, Jonathon. "Advancing electrochemical jet machining techniques." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/54833/.

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Electrochemical Jet Processing (EJP) techniques have been traditionally limited in application by the inherent geometric inflexibility and limited process precision in comparison to alternative processes. It has been stated that process resultant geometries are defined by the Gaussian in-jet energy distribution and the hydrodynamic stagnation region formed under a jet on an impinging surface. This thesis reports upon investigations and innovations designed to challenge these assumptions. EJP is an emergent manufacturing process with a unique capability of subtraction and deposition of metals w
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2

Xu, Xiaoyin. "Application of electrochemical techniques to tribology." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419874.

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3

Martin, Rachel D. "Development and application of dynamic electrochemical techniques." Thesis, University of Warwick, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263603.

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4

Wolowacz, Sorrel Elizabeth. "Novel immobilisation techniques for amperometric biosensors." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319586.

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5

Coombs, Anthony John Martin. "Electroanalytical techniques for cases of medical interest." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257739.

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6

Edwards, Martin Andrew. "Development of electrochemical probe microscopy and related techniques." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/1958/.

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This thesis presents work on the development of a number of scanned electrochemical probe microscopies. Such techniques have widespread applications, from materials science to the life sciences. Advances in flexible instrumentation, coupled with the theoretical description of electrochemical systems, are central themes which allowed for the fruitful investigation of a variety of experimental systems. Theoretical descriptions of scanning ion conductance microscopy (SICM) were developed, particularly to investigate the effect of tip-geometry on imaging resolution. This technique has already foun
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7

Taylor, Sarah Frances Rebecca. "Green catalyst preparation using electrochemical and mechanochemical techniques." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580117.

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The conventional method for synthesis of supported metal catalysts is a multi step reaction that produces large amounts of waste. The focus of this work has been to look at alternative methods of catalyst production which eliminate or lower the number of steps and therefore waste produced. The aim of the project was to synthesise supported metal catalysts by alternative (greener) techniques and then to test these catalysts alongside conventional catalysts for improved and novel activity. It was proposed that catalysts could be synthesized by a novel electrochemical route where the pure metal i
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8

Evans, Nicholas John. "Development of electrochemical techniques for investigating interfacial processes." Thesis, University of Warwick, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340484.

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9

Tan, Sze-yin. "Advanced electrochemical techniques for investigating electron transfer kinetics." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/93622/.

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Heterogenous interfacial electron transfer processes are of fundamental and applied importance to electrochemists and are extensively studied by a wide range of electrochemical techniques. This thesis focuses on the development of analysis strategies and electrochemical methodologies for more detailed quantitative investigations of electron transfer kinetics at a plethora of electrode materials, with an emphasis on carbon-based materials. Of interest are the techniques of Fourier-transformed large amplitude alternating current voltammetry (FTACV) and scanning electrochemical microscopy (SECM).
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10

Kuleshova, Jekaterina. "An investigation of electrochemical techniques in acoustic environments." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/71833/.

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A new system for the generation of hydrodynamic modulation voltammetry (HMV) is presented. This system consists of an oscillating jet produced through the mechanical vibration of a large membrane/piston. The structure of the cell is such that a relatively small vibration is transferred to a large (~ 1 m s-1) fluid flow at the jet outlet. High-speed imaging of the system shows vortex behaviour of the flow at the exit of the jet. Positioning of an electrode over the exit of this jet enables the detection of the modulated flow of liquid. The periodic character of the signal recorded at the electr
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11

Wring, Stephen Andrew. "Investigation of novel carbon substrates for electrochemical sensor applications." Thesis, University of the West of England, Bristol, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278891.

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12

Jackson, Thomas James. "The study of peptide ion channels by electrochemical techniques." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2012/.

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The synthesis of the gramicidin A (gA) analogue gram-2-(nicotinamido)ethyl carbamate (gAN) has been performed. Like gA itself, monomers of the nicotinamide analogue undergo self-assembly in lipid membranes to form K+ selective transmembrane ion channels. Scanning electrochemical microscopy (SECM) has been used to monitor the movement of permeable ions across these channels under a range of physiological conditions. Feedback curve results suggest that K+ ions only pass across the channels when a certain external potential, referred to as the switching potential, is applied to the membrane. This
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13

Ebejer, Neil. "Development and application of pipet-based electrochemical imaging techniques." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/53742/.

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This thesis describes the development of an electrochemical scanned probe microscope, SECCM, outlining the need for such a development, by highlighting previous techniques and their limitations. SECCM consists of a double barrel capillary pulled to small dimensions, filled with electrolyte solution and a redox mediator of choice, with a QRCE is inserted into each channel. A potential is applied between the QRCEs, whilst modulating the pipet normal to the surface. The probe is translated towards the surface and once contact is established, a modulation in the ion current arises due to the physi
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14

Abdelsalam, Mamdouh Elsayed. "Development of microelectrode techniques for analytical and environmental applications." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326794.

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15

Todd, Martin. "Study of ion selective electrodes using impedance and nuclear magnetic resonance techniques." Thesis, University of Newcastle Upon Tyne, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235683.

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16

Billing, Caren. "The determination of trace elements in complex matrices by electrochemical techniques." Pretoria : [s.n.], 2000. http://upetd.up.ac.za/thesis/available/etd-03272006-114615/.

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17

Yasinok, Gozde Ceren. "Development Of Electrochemical Etch-stop Techniques For Integrated Mems Sensors." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607538/index.pdf.

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This thesis presents the development of electrochemical etch-stop techniques (ECES) to achieve high precision 3-dimensional integrated MEMS sensors with wet anisotropic etching by applying proper voltages to various regions in silicon. The anisotropic etchant is selected as tetra methyl ammonium hydroxide, TMAH, considering its high silicon etch rate, selectivity towards SiO2, and CMOS compatibility, especially during front-side etching of the chip/wafer. A number of parameters affecting the etching are investigated, including the effect of temperature, illumination, and concentration of the
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18

Aguayo-Salinas, S. "A study of the leaching of bornite by electrochemical techniques." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37386.

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19

Rhodes, Aidan. "Complementary applications of Scanning Kelvin nanoprobe microscopy and electrochemical techniques." Thesis, Durham University, 2008. http://etheses.dur.ac.uk/2235/.

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Scanning Kelvin Nanoprobe (SKN) microscopy is a new technique, based on Lord Kelvin's theory of contact electrification, which is able to measure changes in the work function of a surface with nanometre- scale precision. This technique has great potential in the analysis of surface chemistry, especially that of self-assembled monolayers and biochemical interactions. This thesis examines the potential of SKN microscopy in analytical chemical applications. SKN microscopy is used and contrasted against a range of other analytical techniques, including atomic force microscopy (AFM), confocal Raman
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20

Coombs, Helen Victoria. "Application of impedance techniques to the study of living cell monolayers and membranes." Thesis, University of Hertfordshire, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293302.

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21

Wain, Leonie Alison, and n/a. "Investigating the condition of organic coatings on metals: electrochemical evaluation techniques in a conservation context." University of Canberra. Resources, Environmental & Heritage Sciences, 2002. http://erl.canberra.edu.au./public/adt-AUC20050726.144111.

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Electrochemical techniques have potential for use in conservation, both to evaluate the protectiveness of existing coatings on metal artefacts and to evaluate potential new conservation coatings. Three electrochemical methods have been examined in this study for their applicability to conservation problems. Corrosion Potential Measurement is simple but provides only minimal information on the corrosion processes occurring in an electrochemical system. Electrochemical Impedance Spectroscopy provides both mechanistic and predictive information on coating performance, but the data are complex to
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22

Buttrey, F. E. "Predictive corrosion testing of tin mill products using advanced electrochemical techniques." Thesis, Swansea University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636192.

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This thesis documents studies directed towards the development of electrochemical measurement procedures capable of quantifying corrosion resistance and/or the corrosion rate in Tin Mill products, and in particular steel food/beverage cans. Chapters 3 and 4 describe electrochemical studies carried out using commercially produced cans. Conventional corrosion evaluation techniques were compared with Electrochemical Impedance Spectroscopy (EIS) data. EIS was found to provide useful information regarding container corrosion performance, however statistical variation from can to can required the us
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23

Johnston, Matthew Gerard. "Applications of Surface Analysis Techniques to the Study of Electrochemical Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1089811353.

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24

RIZZARDINI, SIMONE. "Study and achievement of organic-inorganic innovative materials through electrochemical techniques." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266882.

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The functionalization of conductors and semiconductors using organic molecules is a very important issue in the development of novel organic/inorganic heterostructures suitable as materials in sensors, biosensors, clinical diagnostics, biological sensing and energy storage and conversion. In this context, to obtain a stable, durable bond with the surface and controllable process, the electroreduction of aryldiazonium salts is a promising alternative to conventional techniques (as Self Assembled Monolayer), also to ensure conductivity and homogeneity of the organic coating. This work, focused o
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25

Chen, Yue. "Inhibition mechanisms of corrosion inhibitors in multiphase flow conditions using electrochemical techniques." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1179168537.

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26

Ebert, Helen Diane. "The study of adsorbed species using electrochemical and ultra high vacuum techniques." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255669.

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27

Patwardhan, Madhura. "Tissue-Based Diagnostics and Corrosion Control of Biodegradable Implants using Electrochemical Techniques." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367943908.

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28

Sandifer, Marnita Elizabeth. "Application of in-situ spectroscopic techniques to the study of electrochemical processes." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1057236338.

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29

Virgilio, Francesca. "Development of electrochemical sensors by nanofabrication techniques for biological and medical diagnostics." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9979.

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2012/2013<br>In this work the fabrication and characterization of boron-doped diamond (BDD) nanoelectrode arrays are discussed. NEAs were obtained by creating an array of nanoholes by electron beam lithography (EBL) and Nanoimprint Lithography in a thin film of polycarbonate deposited on top of the macroelectrode. This approach leads to the formation of recessed nanoelectrodes. NEAs have been characterized with cyclic voltammetry and have provided voltammetric signals controlled by pure radial diffusion. Short ss-DNA have been immobilized on polycarbonate surface and hybridization experiments
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30

Pecchielan, Giulia <1985&gt. "Development of analytes' screening methods using voltammetric techniques and scanning electrochemical microscopy." Doctoral thesis, Università Ca' Foscari Venezia, 2015. http://hdl.handle.net/10579/8290.

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I numerosi vantaggi offerti dalla Microscopia Elettrochimica a Scansione (SECM) e dalle tecniche microcapillari (MC), hanno visto un grande interesse nello sviluppo di queste tecniche per studiare e caratterizzare una grande varietà di materiali all’interfase substrato/soluzione. Le tecniche vengono anche ampiamente utilizzate per modificare le superfici con funzionalità specifiche. In questa tesi, la SECM e la MC sono state usate per studiare fenomeni chimici che avvengono all’interfase solido/soluzione di sistemi costituiti da nano particelle di argento (AgNPs). Nella tesi, in particolare, s
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31

IANNUCCI, LEONARDO. "Measurement techniques for microbial corrosion assessment." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2774812.

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32

Taylor, Malcolm G. "Measurement of organic substances in the gas phase using on-line electrochemical techniques." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/12597.

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Aniline was chosen as an atmospheric pollutant which might be monitored using an electrochemical sensor. The effect of pH and of different organic solvents on electrode poisoning was investigated for the analysis of aniline by voltammetry and it was concluded that it was not possible to prevent poisoning of the electrode by the reaction products. The analysis of aniline by flow injection analysis (fia) with DC (constant potential) and pulsed (double pulse) amperometric detection also suffered from electrode poisoning and the latter had a relatively high detection limit. Secondary and tertiary
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33

Shen, Dai. "Investigation of Charge Transfer Kinetics in Non–Aqueous Electrolytes Using Voltammetric Techniques and Mathematical Modeling." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1574762430962913.

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34

Soma, Arpita. "Electrochemical oxidation of Phenol –A Comparative Study Using Pulsed and Non-pulsed Techniques." Cincinnati, Ohio : University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1267718359.

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Thesis (M.S.)--University of Cincinnati, 2009.<br>Advisor: Margaret J. Kupferle. Title from electronic thesis title page (viewed Apr. 26, 2010) Includes abstract. Keywords: phenol; electrochemical oxidation; chlorate; boron doped diamond anode. Includes bibliographical references.
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35

Kinnear, Sophie L. "Development and application of electrochemical scanning probe microscopy techniques for studying interfacial processes." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/77508/.

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This thesis is concerned with the construction of new electrochemical scanning probe microscopes. Designed to support a wide variety of existing techniques as well as to develop new techniques. This exibility was achieved by basing the equipment around a field programmable gate array card (FPGA), which allows for a software program to be configured on the physical FPGA card as hardware. This technology provides the efficiency and high speed of bespoke hardware and can be reprogrammed like software. The instrumentation was programmed in-house using the graphical programming language, LabVIEW, w
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36

Sabuncu, Sinan. "Investigation of enzymes from the respiratory chain by using electrochemical and spectroscopic techniques." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF017/document.

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Le présent travail porte sur l’étude de deux protéines de la famille des oxydases à hème-fer par des techniques de spectroscopie et d’électrochimie. Le premier chapitre décrit l’étude du cytochrome bo3 oxydase issue d’E. coli. Nous nous sommes intéressés à l’étude des interactions enzyme-quinone par l’utilisation de quinones avec des longueurs chaines isoprenyl différentes. Notre but est de mieux comprendre le rôle de la longueur de la chaine des quinones sur l’activité catalytique de l’enzyme et sur les propriétés redox des cofacteurs à hème. Dans l’étape suivante, on a étudié les résidus imp
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37

Kemp, Gemma Louise. "Investigating Mechanistic Aspects of Cytochrome c Nitrite Reductase : Combining Electrochemical and spectroscopic Techniques." Thesis, University of East Anglia, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520455.

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38

Sharer, Sahir Zalilah. "Investigation of protective mechanisms of organic coatings by thermal testing and electrochemical techniques." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:8fb242d3-4836-4082-ae95-b7990b593f8a.

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This work investigated the protection of mechanism of organic coatings on steel exposed to 3&percnt; sodium chloride solution at 50&deg;C, coupled with the use of electrochemical impedance spectroscopy (EIS) to monitor progress of corrosion and degradation of coating. Unlike Walter, EIS measurement was conducted at 50&deg;C as well as after cooling, and measurements at intermediate temperatures have been used to characterize the dependence of the process involved. The proposition that corrosion rate is controlled by the ionic resistance of an organic coating has been tested. EIS results were f
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39

Cookson, E. "Characterisation of the Weibel-Palade body fusion pore using optical and electrochemical techniques." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1369009/.

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Endothelial cells (ECs) form a dynamic surface within blood vessels, constantly monitoring and responding to their local environment by synthesising and releasing diffusible and cell surface bioactive molecules. The regulated secretion of a range of such molecules is mediated by the exocytosis of secretory granules (SGs) called Weibel-Palade bodies (WPBs). Optical data has suggested that WPBs undergo different forms of exocytosis whereby subsets of cargo molecules are released or retained based on their size. In other cell types the SG fusion pore is implicated in regulating selective release
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40

Kim, Sunghyun. "Applications of synchrotron radiation and optical spectroscopic techniques to the study of electrochemical interfaces." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060793325.

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41

Jamali, Seyed Sina. "Study on corrosion protection of organic coatings using electrochemical techniques : developing electrochemical noise method, effective of surface preparation and inhomogeneity of organic coatings." Thesis, University of Northampton, 2013. http://nectar.northampton.ac.uk/8862/.

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42

Bartsch, Jonas [Verfasser]. "Advanced Front Side Metallization for Crystalline Silicon Solar Cells with Electrochemical Techniques / Jonas Bartsch." München : Verlag Dr. Hut, 2012. http://d-nb.info/1020298839/34.

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43

Eaves, Jeffrey Graham. "A study of some electroactive, thin organic films prepared by plasma and electrochemical techniques." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6881/.

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Electron Spectroscopy for Chemical Applications (ESCA) and Cyclic Voltaimnetry (CV) have been used to study the surface and electro chemistries of electroactive, thin organic films. A method is developed for the preparation of such films by the synthesis of a molecule containing both an electroactive centre (ferrocene or iron (II) or ruthenium (II) trisbipyridyl) bonded to an electro-polymerizable unit (pyrrole). The surface chemistries of polypyrrole, polyaniline and electrodes potentiostatted in ferrocene solutions were also investigated and results corpared to previous studies where possibl
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44

Petzold, James Christian. "The application of electrochemical techniques to the study of the surface of papermaking woodpulps." Thesis, University of Reading, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333172.

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45

Wallace, Suzanne L. (Suzanne Lin) 1975. "The correlation of electrochemical and magnetic techniques for use in characterization of underfilm corrosion." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/84761.

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46

Hanumanthu, Jyothsna. "A study of cluster cavitation erosion using electrochemical, physical and high-speed imaging techniques." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/350483/.

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Cluster cavitation erosion, generated by piston-like emitter (PLE) vibrating at ultrasonic frequencies, was measured using a novel aluminium erosion sensor in conjunction with optoisolation techniques, in order to bridge the electrochemical detection of cavitation erosion with a counting device possessing USB connectivity, while minimising electrical noise. High-speed imaging assisted in correlating the periodicity of cluster collapse with the frequency of erosion events detected by the sensor. The consistency of the shape and duration of current-time transients associated with erosion were sh
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47

SECHI, ELISA. "Development and characterization of nanoporous and hybrid materials through electrochemical techniques for energetic applications." Doctoral thesis, Università degli Studi di Cagliari, 2017. http://hdl.handle.net/11584/249611.

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This PhD project, focused on the achievement of nanoporous and hybrid materials, is divided in two main topics: the first one is the synthesis of nanoporous nickel electrodes through electrochemical dealloying; the second one is the preparation of polyaniline/porous silicon hybrid materials by aniline electropolymerization on n-type porous silicon surface. Both materials have been synthetized and characterized by electrochemical methods in order to study the effect of the parameters of preparation on their properties. A particular attention was pointed out on the photoactivity and catalytic be
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48

Kataoka, Érica Megumi. "Determinação de carbendazim em amostras de suco de laranja por técnicas eletroquímicas. Uma avaliação estatística de desempenho." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-20042016-140959/.

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Um eletrodo de carbono vítreo foi modificado pela deposição de uma camada de nanotubos de carbono de paredes múltiplas, funcionalizados e decorados com nanopartículas de ouro. Este eletrodo foi caracterizado por microscopia ótica, mostrando uma superfície homogeneamente recoberta. Além disto, a sua morfologia foi investigada por microscopia eletrônica de transmissão, onde observou-se a distribuição e o tamanho médio aproximado de 20 nm das nanopartículas de ouro. Estas nanopartículas metálicas também foram caracterizadas por espectroscopia de absorção na região do UV-vis, mostrando um máximo d
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49

Aravamudhan, Shyam. "Development of micro/nanosensor elements and packaging techniques for oceanography." [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002219.

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50

Broman, Eva. "Printable Biosensors based on Organic Electrochemical Transistors with a Platinized Gate Electrode." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-87641.

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There is a great demand for low-cost disposable sensors in a variety of markets, such as the food chainand health care. No assay is performed more than that of glucose and approximately 85 % of the entirebiosensor market accounts for glucose biosensors. Each year, 6 billion glucose assays are performed andthe majority of them are based on electrochemical detection. Organic electrochemical transistors(OECTs) have favorable properties in terms of low operating voltages and have previously been used asbase for electrochemical detection of glucose. A low-cost disposable biosensor can be achieved b
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