Materials Literature
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Hydrogen has been considered as a potential alternative fuel for future energy supplies and can be produced through high temperature steam electrolysis. The technology can be realized through reversible operation of solid oxide fuel cells (SOFCs), involving reduction of water at the cathode to form hydrogen and reject…
Several proposed beyond-CMOS devices based on two-dimensional (2D) heterostructures require the deposition of thin dielectrics between 2D semiconductor layers as an interlayer, or on the 2D semiconductor as a gate. However the direct deposition of dielectrics on 2D materials is challenging due to their inert surface c…
Using magnetron sputtering with low energy electron beam irradiation, epitaxial growth of CeO2 layers on Si(100) substrates has been studied for the application to microelectronics. We have found that orientation selective epitaxial (OSE) growth of CeO2(100) and (110) layers on Si(100) is capable by controlling surfac…
University of Minnesota Ph.D. dissertation. April 2016. Major: Material Science and Engineering. Advisor: Russell Holmes. 1 computer file (PDF); viii, 233 (A-123) pages.
Crime increases year after year. Aggressions using knives, other cut and puncture elements are increasing greatly leading to a real need for security personnel protection, whether public or private, as weapons used are often improvised and can cause damage in various human body parts or even death. This work is focuse…
The current research addresses the development of a biodegradable polymer composite based on natural rubber and naturally existing cellulose for manufacturing dipped products such as gloves. It is expected that the findings of this research would contribute, at least partially, to solve the problem of waste disposal r…
Interactive textiles based on electrically conductive yarns are being extensively research due to its ability to functionalize fibrous structures, leading to a high interactivity with the user. The aim of this study was to evaluate the durability of interactive embroidered 100% cotton fabrics, incorporating flexible c…
In recent years, CO2 conversion using electrochemical catalysis approaches has attracted great attention due to its several advantages such as the controllable electrode potentials, reaction temperature and the recycled supporting electrolytes1. But the low performance of the electrocatalysts (i.e., low catalytic acti…
DÉDICACE C'est le travail que l'on n'a pas commencé qui est le plus long à finir -Hamfast Gamegie REMERCIEMENTS Je dois d'abord et avant tout rendre grâce à Élisabeth pour son support moral et l'aide qu'elle m'a donnée pendant ma rédaction.Jongler avec le travail le jour et le mémoire le soir était déjà difficile, je…
Mean-field theory of surface species • Nearest-neighbor interactions: 𝜇 = 𝜇 0 + 2 • 3 ⋅ 𝐸 NN 𝜃 𝑗 𝜎 𝑗 𝑗 • Parameters from DFT-calculations • Acid water (pH = 0) • Surface Pt(111) • Temperature 𝑇 = 298.15K• Thermodynamics and activation energies • 3 reaction mechanisms Model: Mean-Field Theory Oxygen Reduction
PtPb ordered intermetallic nanoparticles (NPs) was deposited on titanium oxide (TiO2)/cup-stacked carbon nanotube (CSCNT) for improvement of the activity of the electrochemical oxygen reduction reaction (ORR). Employment of CSCNT as a support material caused high loading of PtPb NPs/TiO2. The PtPb NPs/TiO2/CSCNT which…
The following work reports the evolution of the formation of polypyrrole (PPy) chains and it's intercalation with graphene-carbon nanotubes (G-CNT) nanocomposites. Experiments were carried out to demonstrate the growth of pyrrole through polymerization and its interaction with G-CNT using Cyclic Voltammetry (CV) for 5…
Hydrated Magnesia has very poor cementitious properties in comparison with hydrated OPC, thus its use as a hydraulic binder compound as an OPC replacement material is not possible. Hydrated Magnesia possesses no or very low axial compressive properties, revealing its poor cementitious features. Magnesia in OPC is high…
III-V nitride semiconductors are widely used for optoelectronic devices such as blue lasers diodes (LDs), light-emitting diodes (LEDs), and high power, high frequency field effect transistor (FET) devices [1]. Among these, GaN has exceptional characteristics such as providing direct and wide band-gap energy and high e…
Cataloged from PDF version of article.
Advanced Technology “10 Commandments” in Wearable Technologies By Ning Pan and Ronald Postle Wearable technologies, also known as smart clothing or e-textiles capable of responding to environmental stimuli, have attracted such escalating interests from both manufac- 1. Strength and durability To protect our body from…
This work investigates distinctive water distributions in the aged and fresh GDL samples of the SGL29 BC and its forerunner, the SGL25 BC. In this regard, all the GDL samples are tested in a point injection device during tomographic ex-situ measurements. On the other hand, fresh SGL25 BC samples at anode and cath-ode…
H παρούσα διδακτορική διατριβή παρουσιάζει μία έρευνα με σκοπό την ανάπτυξη μιας φιλικής προς το περιβάλλον και ανταγωνιστικού κόστους προσέγγισης για την κατεργασία αποβλήτων βαφείων. Κύριος στόχος της έρευνας ήταν η βελτιστοποίηση της ηλεκτροχημικής οξείδωσης ώστε να μειωθεί η ρύπανση του περιβάλλοντος, ο όγκος των…
The phenomena, cavity formations and dynamics associated with rigid spheres entering into stratified, two-layer, oil-water systems were experimentally studied. The results were compared with available data for the corresponding type of cavities formed by spheres entering into single-phase, homogeneous liquids. The dis…
The kinetics of drugs photodegradation have traditionally been treated using thermal kinetic analysis methods consisting most commonly in zero and first order kinetics. These treatment strategies were shown to lack specificity and present a number of limitations when applied to photoreactions kinetics. Nevertheless, t…