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 20 of 25 for “"ion transfer"”.
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Structure effects in heavy-ion transfer reaction to the continuum
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1982.
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A statistical approach to heavy-ion transfer reactions to the continuum
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1980
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Modelling of molecule-inside-dipole complexes: through- vs. around-molecule ion transfer
This thesis explores computationally complexes of both polar (Tetraoxane/Pentaoxecane) and nonpolar (Cyclooctane) molecules with the Li-F ion pair, having potential applications in light-matter interactions, transmembrane ion-pair transport, and energy storage. Structures and stabilities, charge …
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Revealing ion transfer kinetics and charge dynamics at operating battery materials through scanning electrochemical microscopy
Interfacial charge transfer plays a critical role in battery technologies, where it governs the rate of reliable ion or electron movement to and from a battery electrode during charge/discharge. As such, issues with performance are often linked to trouble at the interface across many technologies. …
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Investigation of ion transfer efficiency through multi-channel capillaries for a Desorption Electrospray Ionization (DESI) interface
Desorption Electrospray Ionization (DESI) coupled with mass spectrometry (MS) is an efficient imaging technique for obtaining the spatial distribution of molecular species from a surface. In this study, we experimented with different capillary geometries to maximize the signal intensity of analyte …
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Evaluation of Ion Transfer Capillary Geometry on Sensitivity of a Desorption Electrospray Ionization and Mass Spectrometry System
This research examines the effect of ion transfer capillary geometry on the sensitivity of the Desorption Electrospray Ionization – Mass Spectrometry (DESI-MS) process. Previous work has shown that heating the ion transfer capillary to 450˚C will improve the resolution of images taken by the …
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Enantioselective alkene difunctionalization enabled by organochalcogen catalysis I. Lewis base-catalyzed sulfenium ion transfer II. Organoselenium redox catalysis
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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SHAPE COEXISTENCE IN EVEN-EVEN SN NUCLEIWITH MASS NUMBER A=110-120
… different intrinsic shapes at similar excitation energies. In tin isotopes (Z=50), theoretical models predict such coexisting excitations, and experimental evidence for intruder configurations was first observed in the 70s. Nevertheless, spectroscopic information on low-lying 0+ excited …
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The Incorporation of Graphene to Lithium Cobalt Oxide as a Cathode to Improve the Performance of Lithium Ion Batteries
… incorporated with graphene powder in lithium ion batteries (LIBs). Graphene powder was incorporated into cathode materials to enhance the performance of LIBs. The other objective was to impede the construction of a solid electrolyte interphase (SEI) sheet using graphene sheet coating on its …
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Long Term Health Monitoring of Anthony Wayne Bridge Main Cable with Acoustic Emission Technique
The acoustic emission (AE) technique, based on the sudden release of energy within a material generating transient elastic wave propagation, is widely used as a non-destructive technique (NDT). AE events generate a spectrum of stress waves starting at 0 Hz, and typically falling off at several MHz …
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Quantification of membrane transport rates using optofluidics
The transport of ions and small molecules across membranes is a ubiquitous process in biological systems. Effective studies of membrane transport phenomena require suitable model membrane systems, efficient methods to quantify transport kinetics and a robust theoretical framework to derive …
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Mass spectrometric characterization of remotely charged amino acids and peptides
<p>Ion–molecule reactions in a flowing afterglow are used to examine the electronic structure of 3- and 4-pyridinylnitrene-n-oxide radical anions. Reactions with nitric oxide are generally similar to those reported previously for other aromatic nitrene radical anions. In particular, phenoxide …
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A Theoretical Approach to Guiding Biotechnological Improvement of Crop Photosynthetic Efficiency
This thesis aims to use computational modeling approaches to advance identifying targets for higher photosynthetic efficiency. Two approaches have been identified that can substantially increase daily canopy photosynthetic CO2 uptake rate (Ac). Replacement of current C3 crop Rubisco with foreign …
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Fast adaptive observers for battery management systems
With the proliferation of batteries in transportation, mobile devices and, more recently, large scale energy storage, the demand for new efficient and safe algorithms for battery management has surged. More complex chemistry cells, such as lithium-ion batteries, with their sensitivity to …
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UNDERSTANDING AND MODELING THE SORPTION ON ANION EXCHANGE RESINS USING POLY-PARAMETER LINEAR FREE-ENERGY RELATIONSHIPS AND PHASE CONVERSION
… study developed a predictive model for the sorption of anionic organic contaminants from drinking water on three anion exchange resins: a strong polystyrenic (IRA-910), weak polystyrenic (IRA-96), and a strong polacrylic (A860). The model quantifies the individual mechanisms of sorption using …
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Generation and observation of reactive intermediates in the gas phase and condensed media
… constructed and upgraded with a laser desorption system. MBMS has allowed for the detection of reactive small molecules including but not limited to P₂ from P₂A₂ (where A = anthracene, C₁₄H₁₀), HCP from PPh₃(HCP)A and various dialkylamino phosphinidenes from their corresponding …
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DEVELOPMENT AND APPLICATIONS OF SCANNING ELECTROCHEMICAL MICROSCOPY (SECM)
… which can exhibit local chemical information at a sub-micron scale. SECM has been applied in many fields, such as determination of electron transfer and ion transfer at liquid/solid, reactivity/conductivity, or liquid/liquid interfaces, imaging of surface surface fabrication or …
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Solid Oxide Fuel Cell Modeling at the Cell Scale - Focusing on Species, Heat, Charge and Momentum Transport as well as the Reaction Kinetics and Effects
… is used as fuel, there are no direct emissions of greenhouse gases. Various improvements are made during the recent years, however the technology is still in the early phases of commercialisation. Fully coupled computational fluid dynamics (CFD) approaches based on the finite element method …
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Hierarchical Carbon Structures for Advanced High Areal Capacity Lithium-Ion Battery Electrodes
… calls for a matching development in lithium-ion batteries (LIBs) that offer high power density, energy density, and long cycle life. However, LIBs based on traditional layered metal oxide cathodes and graphite anodes are quickly approaching their specific energy limits. The exploration of …
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