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- 1Chisholm, Roderick A.
- 1Cui, Xin
- 1Hodder, Kevin J
- 1Huff,Taleana R
- 1Moustafa, Ahmed M. A.
- 1Rizwan, Tania
This dissertation investigates the influence of surface heterogeneities on colloid deposition. First, deposition of colloidal particles on a nanofiltration membrane during cross flow membrane filtration was studied under different operating pressures and solution chemistries. An atomic force...
Exploring Atomic Force Microscopy To Probe Charge Transport Through Molecular Films And For The Development Of Combinatorial Force MicroscopyDownload
Since the invention of the atomic force microscope (AFM), this technology has had profound implications in the study of material science and molecular biology. The ability to visualize and perform quantitative analysis of the nanoscale properties of surfaces has provided great insights into...
Investigation of the Adsorption of Model and Oil Sands Process-Affected Water Naphthenic Acids on GraphiteDownload
Naphthenic acids (NAs) are constituents of bitumen in the oil sands deposits in northern Alberta, Canada. The extraction process of bitumen creates an enormous amount of wastewater called oil sands process affected waters (OSPW). This OSPW contains elevated concentrations of NAs, and other...
Non-contact Atomic Force Microscopy (NC-AFM) is a Scanning Probe Microscopy tool offering unique non-perturbative analysis of surfaces and adsorbates at the atomic scale. AFM precisely oscillates a sharp tip above a sample. By monitoring the shift in resonance frequency of a quartz tuning fork...
Probing Surface Heterogeneity, Electrochemical Properties and Bubble-Solid Interaction Mechanisms of Sulfide Minerals in FlotationDownload
The colloidal stability governed by various surface interactions including van der Waals (VDW) interaction, electrical double layer (EDL) interaction, hydrophobic interaction, and some other interactions, plays an important role in a wide range of natural phenomena and engineering applications....
Surface Interaction Mechanisms between Deformable Bubbles and Hydrophobic Surfaces in Aqueous SolutionsDownload
Deformable bubbles in complex fluidic systems are crucial components in a variety of traditional and emerging industrial processes, where their surface interactions with hydrophobic surfaces play an important role in realizing the targeted functionalities. In this project, a bubble probe atomic...
Due to the natural heterogeneity of rock there exists a large variance between samples in geomechanical engineering testing. Additionally, the number of samples available for testing that meet the screening requirements for grain size, mineralogy, bedding orientation and moisture content can...