Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"ionic conduction"”.
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Transport properties of synthetic nanopores
… Such force field was employed to study the ionic conduction through silica nanopores. The simulations revealed that the atomic topography of the silica nanopore plays a major role in ionic conduction, producing phenomena such as ionic rectification. For polymeric polyethylene terephthalate …
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Electrochemistry and Electrokinetics in Microchannels
… bridge. The purpose of a salt bridge is to allow ionic conduction between the reference and working electrodes while maintaining a physical separation between the two systems. Macro reference electrode and salt bridge techniques are difficult to implement on a micro scale. Instead of attempting to …
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A study of the structure of v-B2S3 and sodium thioborate glasses
… glasses have increased recently due to the fast ionic conduction behavior found in the sulfide based glasses. However, before much work can be done on the conductivity of these materials, it is important to understand the structure and how this influences the conductivity. This work explores the …
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Study on corrosion protection of organic coatings using electrochemical techniques: developing electrochemical noise method, effective of surface preparation and inhomogeneity of organic coatings
… organic coatings, steel surface preparation and ionic conduction through the coating, as well as development of the electrochemical noise method as an effective assessment method. Surprising and somehow controversial previous findings at the University of Northampton showed an inverse …
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Characterizing and Real-Time Monitoring of Various Types of Waters and Wastewaters Contaminated With Algae, Recycled Plastic Powders, and Clay Using the New Electrical Methods With Vipulanandan Models
… variation; nitric acid and NaOH showed dominant ionic conduction; PLA and bentonite displayed interfacial polarization effects. Strong correlations were identified between Rc, Cc, and EC/TDS, confirming τ as a reliable diagnostic indicator of contamination severity. Overall, this research …
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Statistical theory of selectivity and conductivity in narrow biological ion channels : studies of KcsA
… large conductivity and strong selection between ionic species. This process involves many complicated interactions, and their inclusion in a multi-species conduction model remains a fundamental theoretical challenge. In this thesis, we derive the theory of multi-species ionic conduction through …
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Investigation of Reactive Electrokinetic Processes for Permeability Reduction in Hardened Cement Paste
… (hydraulic pressure flow, electroosmosis, and ionic conduction). Model predictions correlated well with observed cement paste microstructures and permeability measurements. In addition to conducting hydraulic permeability tests, impedance measurements were also used to predict the viability of …
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Design, Synthesis and Self-Assembly of Polymeric Building Blocks and Novel Ionic Liquids, Ionic Liquid-Based Polymers and Their Properties
… Supramolecular interactions enhance the ionic conductivity of semi-crystalline ionic polymers; the ionic conductivity of a C₆-polyviologen and dibenzo-30-crown-10 mixture was 100 times higher than the polyviologen itself. However, ionic conductivities of amorphous polyviologens with …
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Physical, electrical and electrochemical characterizations of transition metal compounds for electrochemical energy storage
… where the former shows electronic conduction in the 3-dimensional framework. Mixed electronic and ionic conductivity, from the framework and from the cations located within the framework, respectively, is measured in the oxo-vanadium arsenate, and allows the use of this material in …
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Integration of liquid crystals with redox electrolytes in dye-sensitised solar cells
… 15% 4'-cyano-4'-pentylbiphenyl (5CB) improved ionic conductivity by up to 13 % compared to pure polymer electrolyte. Materials with positive dielectric permittivity and shorter alkyl chain length have been identified to be compatible with iodide/triiodide (I^-/I_3^-)-based polymer electrolytes. …
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Atomic structures and properties of oxide interfaces
… pillars embedded in a SrTiO₃ matrix. Enhanced ionic conductivity has been found in these VANs in prior studies, but the role of vertical interfaces is not explained. The initial interface searches are performed with interatomic potentials due to the large size of the interface, followed by …
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Keer electro-optic measurements in liquid dielectrics
… data, which enriches the knowledge on ionic conduction in liquids by offering an experimentally-determined boundary condition to the numerical model. Physical mechanisms based on formative steps of adsorption-reaction-desorption reveal possible connections between geometrical …
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Evaluation of the microstructural, electronic and optoelectronic properties of ƴ-CuCl thin films and their fabrication on Si substrates
… suggested that the untreated CuCl is a mixed ionic-electronic semiconductor material. Room temperature steady state DC measurements using reversible electrodes (Cu) gave an Ohmic response while using irreversible electrodes (Au) gave an exponential I–V behaviour, both in conformance with …
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Investigation on the Mechanical, Microstructural, and Electrical Properties of Graphene Oxide-Cement Composite
… This reduction can be attributed to the ionic conduction though the pore solution of the composites. As the rGO content increased, so did the potential nucleation sites for hydration (as can be seen in SEM images), which might block the number of contact points among the rGO, resulting in …