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 12 of 12 for “"in-situ atomic force microscopy"”.
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Nanoscale Effects of Strontium on Calcite Growth: A Baseline for Understanding Biomineralization in the Absence of Vital Effects
This study uses in situ atomic force microscopy (AFM) to directly observe the atomic scale effects of Sr on the monomolecular layer growth of abiotic calcite. These insights are coupled with quantitative measurements of the kinetics and thermodynamics of growth to determine the direction-specific …
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In-situ and ex-situ observations of lithium de-intercalation from LiCoO₂ : atomic force microscopy and transmission electron microscopy studies
… commonly used material for positive electrodes in lithium rechargeable batteries. During lithium de-intercalation from this material, ... undergoes a number of phase transitions, which have been studied by bulk techniques and first-principles calculations. The objective of this work was to …
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Assessing the Reactive Surface Area of Phlogopite during Acid Dissolution: An Atomic Force Microscopy, X-ray Photoelectron Spectroscopy, and Low Energy Electron Diffraction Study
The behavior during dissolution of edge and basal surfaces of the mica phlogopite were examined using in situ atomic force microscopy (AFM), x-ray photoelectron spectroscopy (XPS) and low-energy electron diffraction (LEED) in an attempt to characterize the reactive surface area during dissolution. …
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In Situ Studies of Corrosion and Electrodeposition Using Atomic Force Microscopy
In situ atomic force microscopy was used to study corrosion and electrodeposition on a nanoscopic level. Dissolution of copper was crystallographic in 0.5 M H$\sb2$SO$\sb4$ at overpotentials up to 100 mV; addition of BTA provided corrosion inhibition up to 300 mV overpotential, where pitting …
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Atomic Force Microscopy Study of Clay Mineral Dissolution
An integrated program has been developed to explore the reactivity of 2:1 phyllosilicates (biotite and the clays montmorillonite, hectorite, and nontronite) with respect to acid dissolution using in situ atomic force microscopy (AFM). Three techniques are described which make it possible to fix …
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In-situ study of the influence of additives on the growth behavior of copper electrodeposits on copper single crystal
… organic additives are known to be essential in obtaining desired metal electrodeposits in the microelectronic industry, however, fundamental design principles for their use and a scientific understanding of their interaction during electrodeposition is lacking. In the present study we …
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Designing surface chemistries for in situ AFM investigations of biomolecular reactions with proteins at the nanoscale
In situ atomic force microscopy (AFM) characterizations and lithography can be applied to investigate the orientation, reactivity and stability of protein molecules adsorbed on nanostructures of self-assembled monolayers at near-physiological conditions. Automated nanografting was used to fabricate …
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Establishing a Baseline for Kinetic and Thermodynamic Origins of Vital Effects: Toward an Understanding of Factors Controlling Mg Signatures in Calcite
… models for temperature and seawater chemistry begin by assuming compositional signatures reflect environmental conditions of formation. The Mg/Ca ratio in marine cements and calcified skeletal structures is a widely used proxy for reconstructing past earth environments. Many studies have …
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Studies of Biomacromolecule Adsorption and Activity at Solid Surfaces by Surface Plasmon Resonance and Quartz Crystal Microbalance with Dissipation Monitoring
… of polysaccharide derivatives at liquid/solid interfaces was studied by surface plasmon resonance spectroscopy (SPR) and quartz crystal microbalance with dissipation monitoring (QCM-D). Carboxymethyl cellulose (CMC) adsorption onto cellulose surfaces from aqueous solutions was enhanced by …
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Adsorption Studies of Polysaccharides and Phospholipids Onto Cellulose
Interactions between biomolecules and cellulose films at solid/liquid interfaces was studied by surface plasmon resonance spectroscopy (SPR), quartz crystal microbalance with dissipation monitoring (QCM-D) and in situ atomic force microscopy (AFM) measurements. This dissertation shows the porous …
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Precursor phases in non-classical crystallization
The main objective of this thesis is to understand molecular crystallization as a multistep process with or without polymeric additives, including transient liquid-liquid phase separation, nanocrystal nucleation within the dense phase, and subsequent nanocrystal self-assembly or self-organization …
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Advances in experimental methods to probe surface relief grating formation mechanism in photosensitive materials
… polymer films are irradiated with light interference patterns, topographic variations in the film develop that follow the electric field vector distribution resulting in the formation of surface relief grating (SRG). The exact correspondence of the electric field vector orientation in …