Index Catalog // ScholarsArchive@OSU

Theoretical Study of Solvent Effects in Heterogeneous Catalysis using Density Functional Theory

Creator:: Chukwu, Kingsley C.
Abstract:: Heterogeneous catalytic reactions in solvents are important for chemical processes like direct methanol fuels, biomass conversion to biofuels and electrochemical reduction of CO2 to fuels. Numerous experimental studies have shown that co-adsorbates and solvents affect the rate and selectivity of heterogeneous catalytic reaction, therefore fundamental understanding of how co-adsorbates and...
Resource Type:: Dissertation
Full Text:: Líney Árnadóttir Heterogeneous catalytic reactions in solvents are important for chemical processes

Predicting the Effect of Local Conditions on Metal-oxides: Pt/γ-Al₂O₃ Interface and Degradation of α-Cr₂O₃ Passive Film

Creator:: Oware Sarfo, Kofi
Abstract:: Metal-oxides are very important in industrial applications such as thermal barrier coatings, corrosion protection, and heterogeneous catalysis. The wide variety of applications for metal-oxides are derived from the array of properties of metal-oxides. It is, therefore, important to understand and predict the conditions of synthesis and operation to optimize the...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Líney Árnadóttir Metal-oxides are very important in industrial applications such as

Density Functional Theory Study of the Reaction Mechanism of Chloride-induced Depassivation of α-Fe2O3

Creator:: Pang, Qin
Abstract:: Carbon steel, which contains mostly iron, has been widely used as reinforcement in reinforced concrete. In the alkaline environment in reinforced concrete, a thin iron oxide film, called the passive film, forms on the surface of the steel, which protects the surface from active corrosion. The exact atomic structure of...
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ Líney Árnadóttir Carbon

Analyzing the Kinetics and Thermodynamics of Surface Reactions using Density Functional Theory

Creator:: Sprowl, Lynza H.
Abstract:: The interactions of chemical species with a solid surface play a role in many everyday applications such as heterogeneous catalysis, corrosion, and degradation reactions. Understanding the reaction kinetics and thermodynamics via rate constants and equilibrium constants, which require knowledge of the adsorbed species’ entropy, is essential for tuning these surface...
Resource Type:: Dissertation
Full Text:: dissertation is a product of all you have taught me and pushed me to learn. Thank you Líney Árnadóttir for

Point Defects and Impurities Adapted Phonon Thermal Properties of Zirconium Diboride: It's Influence on Thermal Conductivity, Thermal Expansion and Specific Heat

Creator:: Ighere, Jude Ogheneyoreme
Abstract:: The study outlined in this dissertation elucidate the thermal and structural properties of ZrB2 based ceramics as choice materials for high temperature applications. Thermal properties were investigated to improve understanding on aspects that are affected by point defects and impurities at nanoscale and electron level using a combination of lattice...
Resource Type:: Dissertation
Full Text:: willingness to teach and explain concepts to your students. To my co-advisor, Professor Liney Arnadottir

Understanding Charge and Mass Transfer Phenomena in Functional Oxide Heterostructures

Creator:: Samarakoon, Widitha
Abstract:: Oxides are a versatile class of materials with a wide range of electronic, optical, and magnetic properties. This makes them ideal for use in a multitude of functional devices for oxide electronics, electrochemical conversion, and storage. The overall performance of these devices is governed by atomic scale charge and mass...
Resource Type:: Dissertation
Full Text:: committee members, Prof. Liney Arnadottir, Dr. Kelsey Stoerzinger and Dr. Tianyi Chen. Thank you very much

CO₂ Reduction in Microscale-Based Corona Reactor : Experiments and Modeling

Creator:: Miao, Yu
Abstract:: Global warming is becoming an increasingly important environmental concern and CO₂ is considered as the major cause of global warming. Creating useful applications for CO₂ would generate alternatives to merely venting CO₂ to the atmosphere, and decreasing the carbon intensity of human activities. Among various methods of CO₂ utilization, conversion...
Resource Type:: Dissertation
Full Text:: Dr. Liney Árnadóttir, Dr. Karl Schilke and Dr. Morrie Craig for participating as committee members

A study of the dynamics and rheology of passive and active suspensions of particles with various geometries

Creator:: Tan, Mingyang
Abstract:: Suspensions of particles in fluids are everywhere in our life, such as paints, pharmacies, food, etc. Suspensions can exhibit properties that common fluids do not possess. For example, the paint needs to flow well when brushing so that it can be smeared on the wall, which is aided by the...
Resource Type:: Dissertation
Full Text:: to thank Ĺıney Árnadóttir and Martin Fisk for being my committee members, as well as Kate Schilke

Design Principles of Transition Metal X-ide Catalysts for Electrochemical Oxygen Reduction and Evolution Reactions: In-Situ X-ray Spectroscopy Studies

Creator:: Wang, Maoyu
Abstract:: Hydrogen is the green fuel that can be produced from water through electrolysis and used via hydrogen fuel cells to generate electricity with zero carbon dioxide emission. The commercialization of electrolyzers and fuel cells is the critical step to achieving global carbon neutrality. However, it is severely hampered by the...
Resource Type:: Dissertation
Full Text:: , Prof. Líney Árnadóttir, Prof. Chih-hung Chang, Prof. Gregory S. Herman, and Prof. Liu Hong. Thank you

Investigation of Iron Passivity and Chloride-induced Depassivation in Alkaline Electrolytes using Reactive Force Field Molecular Dynamics (ReaxFF-MD)

Creator:: Dormohammadi, Hossein
Abstract:: The corrosion and passivity of iron (and carbon steel) in media with different alkalinity as well as iron depassivation have been studied extensively using electrochemical methods and nano-scale surface characterization studies. The electrochemical techniques provide valuable information about the average electrochemical behavior of relatively large metal surfaces, typically in centimeter-square...
Resource Type:: Dissertation
Full Text:: committee members Professors Jason Weiss, Jason H. Ideker, Líney Árnadóttir and John Sessions, whose

Characterization and Investigations of Thin-Film Materials with X-ray Photoelectron Spectroscopy

Creator:: Diulus, J. Trey
Abstract:: Surface characterization of materials is widely utilized over a range of disciplines and essential to the development of new materials, technology, or processes. Metal oxide nanoclusters have shown promise as potential new generation photoresist materials for extreme ultraviolet (EUV) nanolithography. Organotin clusters have been proposed as potential candidates for resist...
Resource Type:: Dissertation
Full Text:: responsible for helping to collect spectra. A team of Ryan Frederick, Mengjun Li, Líney Árnadóttir, Igor

Functional materials for advanced energy and electronic devices

Creator:: Flynn, Brendan T.
Abstract:: Advances in energy technologies and electronics have typically occurred through either heightened performance or cost reduction. This dissertation explores both routes through a series of fundamental material studies that may contribute to the enabling of next generation devices. Solution based syntheses and deposition of chemical products offer a low cost...
Resource Type:: Dissertation
Full Text:: Szanyi provided use of their equipment and ran the experiments at PNNL. Líney Árnadóttir has

Metal Oxide Cluster Chemistries for Next Generation Nanomanufacturing

Creator:: Frederick, Ryan T.
Abstract:: Metal oxide clusters are promising inorganic photoresists in next generation nanomanufacturing because of their potential for high-resolution and low line-edge roughness patterning, and exceptional sensitivity to extreme ultraviolet (EUV) radiation. In EUV patterning, absorption of EUV radiation leads to electron emission that serve as a primary species for driving radiation...
Resource Type:: Dissertation
Full Text:: facilitating this award. I am very grateful to my committee, Chih-Hung Chang, Líney Árnadóttir, Joe Baio

Laser patterned porous-media microfluidic analytical devices : fabrication methods and applications in bioassays

Creator:: Sumantakul, Saichon
Abstract:: The concept of reducing laboratory operations into microfluidic devices has been an attractive area of research for several decades. Due to several advantages of porous-media microfluidic devices including low mass, portability, power-free fluid transport, and the ability to store dried reagents in the porous structures, these devices show great promise...
Resource Type:: Dissertation
Full Text:: members: Dr. Claudia S. Maier, Dr. Kyriakos Stylianou, Dr. Elain Fu, and Dr. Liney Arnadottir for their

Operations Research Models for Blood Supply Chain Network Design for Disaster Planning

Creator:: Baik, Shefaa A.
Abstract:: A blood supply chain (BSC) deals with the collection, processing, storing, and distribution of blood collected from donors and delivered to patients at demand points (DPs) through a network of several temporary mobile blood units (MBUs) and permanent local blood centers (LBCs). In general, the strategic and tactical design of...
Resource Type:: Dissertation
Full Text:: Nembhard, Dr. Jeffrey Bethel, Dr. Sarah Emerson, and Dr. Líney Árnadóttir, for their insightful comments

Utilization of Renewable Energy via Thermochemistry

Creator:: Lei, Fuqiong
Abstract:: Utilization of solar energy or wind energy for electricity production is inherently challenging due to the diurnal and seasonal variations and normal intermittency. Effective, high efficiency storage methods need to be developed for further advancing renewable energy utilization. Endothermic chemical processing and thermochemical energy storage can be both employed as...
Resource Type:: Dissertation
Full Text:: members for your guidance and support - Goran Jovanovic, Líney Árnadóttir, Alex Yokochi, and Wade Marcum

Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

Creator:: Crandon, Lauren E.
Abstract:: Nanoparticles (NPs), defined by their size (1-100 nm), are increasingly incorporated into commercial and industrial products due to their high surface area and unique properties. They can be designed for specific applications by manipulating composition, size, shape, and surface functionalization. As NP production and complexity increases, there is a need...
Resource Type:: Dissertation
Full Text:: . Liney Arnadottir and Dr. Ingrid Arocho for your advice and support. A special thanks to Dr. Skip

Production of C4-C10 Hydrocarbons from CO₂, H₂O, CO, H₂ and CH₄ Utilizing DC Glow Discharges, Catalytic Rapid Temperature Pulsing in Micro-Scale Reactors.

Creator:: Mohamed, Omar M.
Abstract:: This thesis experimentally determines the feasibility to creating C4 to C10 hydrocarbons from CO2, CO, H2, H2O and CH4. This is done in two steps, the initial step is the formation of ethylene through DC electrical glow discharge at ambient pressure while the second step is through temperature pulse controlled...
Resource Type:: Dissertation
Full Text:: research. Alongside him Dr. Nicholas AuYeung, Dr. Matthew Coblyn, Dr. Liney Arnadottir and Dr. Alexandre

Numerical Methods for Upscaling Complex Transport Phenomena

Creator:: Taghizadeh, Ehsan
Abstract:: Transport phenomena specially the ones that occur in the various engineering disciplines such as tissue engineering and natural environment are often complex to analyze mostly due to the dynamic and geometric complexities; as such, they have been the subject of an active and intense area of research in past decades....
Resource Type:: Dissertation
Full Text:: committee members Prof. Malgorzata Peszynska, Prof. Dorthe Wildenschild, Dr. Líney Árnadóttir, Dr. Frank W

Investigation of the hospital consumer assessment of healthcare providers and systems survey and its impact on hospital performance

Creator:: Worley, June M.
Abstract:: In 2007, the Centers for Medicare and Medicaid Services began requiring many hospitals in the United States to randomly survey patients who had stayed at least one night in the hospital. The Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey provides hospitals with valuable performance measurement data built...
Resource Type:: Dissertation
Full Text:: . Funk II, Dr. Xinhui Zhu, and Dr. Liney Arnadottir. Their flexibility and willingness to take the last

Production of biohydrodeoxygenated diesel in a novel microscale reactor : Experiments and modeling

Creator:: Atadana, Frederick Williams
Abstract:: Microscale reactors operate in sub millimeter space dimensions. Their small length scale enables process intensification of mass, heat and momentum transport that influence reaction rates. Hence it's possible to observe the true intrinsic reaction kinetics occurring for a set of reactions. In this work a novel microscale reactor for producing...
Resource Type:: Dissertation
Full Text:: process possible. I would also like to thank Dr. Jair Lizarazo-Adarme and Dr. Liney Arnadottir for

Characterization and Development of Ni-based Superalloys for Supercritical Carbon Dioxide Applications

Creator:: Adam, Benjamin M.
Abstract:: The advent of supercritical CO2 as a new heat-exchange medium has seen strong interest from the power industry and the energy research field recently. It is advan- tageous in comparison with other heat-exchange cycles, as it can be operated safely at much higher temperatures and pressures, thus increasing the thermal...
Resource Type:: Dissertation
Full Text:: exciting pathway. Further, I would like to thank Dr. Ĺıney Árnadóttird for her time and willingness to

The Hijab and Muslim Women in a Western Society : Motivation, Modifications, and Well-being

Creator:: Maqsood, Elham Nour Ahmad
Abstract:: The primary purpose of the present study is to explore the effect of wearing the hijab in a Western society on Muslim women’s well-being, their motivation to wear it, and the different modifications that they have made on their hijabs. To investigate the relationship between the hijab and Muslim women’s...
Resource Type:: Dissertation
Full Text:: , Dr. Susan Shaw, Dr. Liney Arnadottir, and to Dr. Patti Duncun and Dr. Christopher Knowels. You all

Process Intensification toward Reduced Exergy Destruction in Methane Upgrading

Creator:: Freiberg, Lucas J.
Abstract:: Exergy relates to thermodynamic value or usefulness in the universe. In this dissertation, three methods in the realm of "process intensification" are explored to reduce exergy destruction by equipment and processes that are used to convert and upgrade methane. Thermodynamic efficiency of a virtual heat exchanger is improved with a...
Resource Type:: Dissertation

Socially Communicative Multi-Robot Motion and Formation: Algorithm Development and Validation

Creator:: Bacula, Alexandra
Abstract:: Expressive motion has been found to be a highly effective tool in communicating intent and motivation in single robot human-robot interaction, but work in exploring how groups of robots can use motion in interactions with humans is relatively nascent. There are many additional complexities to consider expanding from single robot...
Resource Type:: Dissertation

Chemical Reaction Processes in Microscale-Based Reactors; Mathematical Model and Numerical Simulation of the Fischer-Tropsch Process and Activation of Methane in a Corona Discharge Plasma Reactor

Creator:: Traverso, Andrew C.
Abstract:: Worldwide production of natural gas has surged in the last few decades leading to an economic windfall for many communities, but sometimes these new sources of natural gas are located in geographically isolated locations. These areas are so remote that it isn’t economically feasible to transport this stranded gas to...
Resource Type:: Dissertation

Novel Approaches to Porous Material Discovery

Creator:: Sturluson, Arni
Abstract:: Uses for materials with a large surface area and high porosity have grown sig-niﬁcantly in recent years. Porous materials have found usage in applications such as separation, gas storage, sensing, puriﬁcation and more, prompting researchers to ﬁnd and discover numerous new porous materials to suit a speciﬁc purpose. Hundreds of...
Resource Type:: Dissertation

Applications of Nonthermal Microplasmas in Chemical Reaction Engineering

Creator:: Kreider, Peter B.
Abstract:: Nonthermal plasmas generate high concentrations of excited species that can simultaneously exist at high energy and far from thermodynamic equilibrium, making them useful tools in chemistry and engineering. Microplasmas, roughly defined as plasmas that are generated within sub-millimeter dimensions, provide enhanced stability, improved excited species density, increased nonequilibrium properties, higher...
Resource Type:: Dissertation

Exploring the Distinct Solution Behavior of Isostructural Polycoltanates

Creator:: Fullmer, Lauren
Abstract:: Polyoxometalates are a rapidly growing class of discrete metal oxide clusters with a wide range of applications including functional materials. These anionic clusters of the group V and VI transition metals are inexpensive and non-toxic. Within group V polyoxometalates, niobium and tantalum chemistry has been underdeveloped owing to their unique...
Resource Type:: Dissertation

Platinum Nanoparticles in Transition Alumina: An Atomic Resolution Study of Interfaces

Creator:: Clauser, Arielle L.
Abstract:: The phases of transition alumina are scientifically interesting due to their high specific surface area, favorable acid/ base characteristics, and chemical and hydrothermal stability which make this metallic oxide a prime candidate for use as a support for metallic nanoparticles (NPs) in heterocatalysis. Interactions at alumina/Pt interfaces are important for...
Resource Type:: Dissertation
Full Text:: . Líney Árnadóttir assisted in writing and editing Chapters 3, 4, and 5. She was Dr. Oware-Sarfo’s

Modeling Study of the Effects of Catalyst Support on Bio-Hydrogenated Diesel Production Using Density Functional Theory

Creator:: Huang, Dan
Abstract:: The catalyst support effect on NiMoS of bio-hydrogenated diesel production was investigated via density functional theory. The activity, stability and selectivity of catalyst on three widely used catalyst supports (Al2O3, TiO2 and SiO2) were studied and compared. Catalyst-support interaction and Brønsted acidity strength of different catalyst supports were characterized, which...
Resource Type:: Dissertation
Full Text:: all the time. I would like to express my gratitude to Dr. Líney Árnadóttir for her generous help

Part I: Synthetic Studies toward C10-functionalized Lycopodium Alkaloids. Part II: Exploration of the Pummerer Cyclization and Its Application to the Total Syntheses of the Abietane Diterpenoids

Creator:: Li, Xin
Abstract:: This dissertation is separated into two parts according to the two major distinct research projects. In Part I, the full account of synthetic studies toward C10-functionalized lycopodium alkaloids is described. In Part II, the detailed discussion on the exploration of the Pummerer cyclization methodology and its application to the total...
Resource Type:: Dissertation
Full Text:: . Paul Blakemore, Prof. Sandra Loesgen, Prof. Paul Ha-Yeon Cheong, Prof. Xiulei Ji and Prof. Liney

Co-doped Barium Titanate Materials with High Dielectric Constants for Next Generation MLCC Dielectrics

Creator:: Grove, Kyle M.
Abstract:: New high-K dielectric materials are critically needed as chip real-estate becomes more and more of a premium in modern electronics designs. One of the most common devices used in electronics are multilayer ceramic capacitors (MLCCs) which are subject to severe volumetric constraints. One effective means to decrease the size of...
Resource Type:: Dissertation

Surface Characterization of Engineered Biomaterials

Creator:: Faase, Ryan A.
Abstract:: The work presented in this dissertation highlights the various techniques available to characterize the increasingly complex surfaces of engineered biomaterials. The methods used range from the simple measurement of a contact angle with a smartphone to a complex synchrotron technique like near edge x-ray absorption fine structure (NEXAFS) spectroscopy to...
Resource Type:: Dissertation

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Creator:: Carvalho, O. Quinn
Abstract:: Heterogeneous catalysis modulates the rate and selectivity of reaction processes by stabilizing a series of intermediate states on solid surfaces, facilitating the production of many commodity chemicals modern society relies upon. Conventional, thermal catalytic processes—conducted at elevated temperatures and pressures—source thermal, mechanical, and chemical potential energy from carbon-hydrogen bonds— combustion...
Resource Type:: Dissertation
Full Text:: and Prof. Liney Árnadóttir for all of the density functional theory calculations and for remaining

Care Team Burnout in Human and Veterinary Medicine

Creator:: Alshaiji, Rawan
Abstract:: Medical professionals experience higher rates of burnout than other professions due to the highly stressful nature of their environment. In 2018, 94 percent of physicians reported experiencing burnout – characterized by emotional fatigue, and feelings of depersonalization and low personal accomplishment – at some point in their careers. As emotional...
Resource Type:: Dissertation
Full Text:: gratitude to Dr. Sarah Emerson, Dr. Cindy Grimm, Dr. Liney Arnadottir, and Dr. Helio de Morais for their

Critical Assessment of Chloride States and Quantities in Ordinary Portland and Specialty Cements

Creator:: Ahmed, Ahmed Abdulhaq
Abstract:: The constituent materials of concrete often contain chlorides. The presence of chlorides in sufficient amounts can disrupt the passive layer, also known as the passive film, that protects the reinforcing steel in concrete. This disruption can lead to premature corrosion of the reinforcing steel in concrete. To minimize the risk...
Resource Type:: Dissertation
Full Text:: . Líney Árnadóttir for providing me with guidance in solving some chemistry puzzles. I also want to

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