Browsing University of Waterloo by Title
Now showing items 13515-13534 of 18804
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Polymer-Integrated Organolead Halide Perovskite for Solar Cells and Self-Powered Electronic Devices
(University of Waterloo, 2020-04-28)In recent years, organolead halide perovskites (MAPbI3) have emerged as prospective materials for high-efficiency, inexpensive, and simple solution-processed optoelectronic devices such as solar cells, photodetectors, and ... -
Polymer-stabilized Transition Metal Nanocatalysts: Synthesis, Characterization, and Applications
(University of Waterloo, 2015-01-22)Novel polymeric architectures and analytical methods were designed for the synthesis, characterization, and applications of metallic nanocatalysts. Four main research areas were investigated, namely: i) palladium nanocatalysts, ... -
Polymeric Coatings for Targeted Nanoparticle Delivery to Subsurface Contaminants
(University of Waterloo, 2019-05-01)Terrestrial oil spills account for the majority of oil spills world wide and present a challenging remediation problem owing to the inaccessibility of subsurface petroleum hydrocarbons (PHC). Contaminants such as crude oil ... -
Polymeric Foaming Predictions from the Sanchez-Lacombe Equation of State: Application to Polypropylene-Carbon Dioxide Mixtures
(American Physical Society, 2017)A simple off-lattice method of deriving the Sanchez-Lacombe equation of state is presented. The Sanchez-Lacombe equation of state for mixtures is shown to be thermodynamically inconsistent for all mixing rules in such a ... -
Polymeric Materials for Detection of Chemical Warfare Agents
(University of Waterloo, 2021-12-08)Chemical Warfare Agents (CWAs) are toxic synthetic chemicals that can have incapacitating or lethal effects. The 1997 Chemical Weapons Convention (1997 CWC) restricted production, stockpiling and use of CWAs, including ... -
Polymeric rapid prototyping for inexpensive and portable medical diagnostics
(Society of Photo-optical Instrumentation Engineers, 2012-10-24)The advent of inexpensive CO2 laser systems has led to a wide range of demonstrations of microfabricated lab on chip systems built of acrylic. However, there has been little application of these systems to building ... -
Polymeric semiconductor and transition-metal dichalcogenide nanocomposites for inkjet-printed thin-film transistor devices
(University of Waterloo, 2023-10-20)Patterned using subtractive processes, conventional thin-film deposition techniques inevitably require high-vacuum deposition and photolithography to define functional layers to create a device structure. Inkjet printing ... -
Polymerization Data Mining: A Perspective
(Wiley, 2019-04-01)Nowadays, ‘Data mining’ is widely proposed by data scientists as the most accepted and powerful approach to properly handle the information explosion. Data mining is defined as the extraction of interesting patterns and ... -
Polymerization of Ethylene with Supported Early and Late Transition Metal Catalysts
(University of Waterloo, 2011-08-09)Single-site catalysts revolutionized the polyolefin manufacturing industry and research with their ability to make polymers with uniform microstructural properties. Several of these catalysts are currently used commercially ... -
Polynomial bounds for chromatic number II: Excluding a star-forest
(Wiley, 2022-10)The Gyárfás–Sumner conjecture says that for every forest H, there is a function fH such that if G is H-free then x(G) ≤ fH(w(G)) (where x,w are the chromatic number and the clique number of G). Louis Esperet conjectured ... -
Polynomial bounds for chromatic number VI. Adding a four-vertex path
(Elsevier, 2023-05)A hereditary class of graphs is -bounded if there is a function f such that every graph G in the class has chromatic number at most f(!(G)), where !(G) is the clique number of G; and the class is polynomially bounded ... -
Polynomial bounds for chromatic number VII. Disjoint holes.
(Wiley, 2023-05-14)A hole in a graph G is an induced cycle of length at least four, and a k-multihole in G is the union of k pairwise disjoint and nonneighbouring holes. It is well known that if G does not contain any holes then its chromatic ... -
Polynomial bounds for chromatic number VII. Disjoint holes.
(Wiley, 2023-11)A hole in a graph G is an induced cycle of length at least four, and a k-multihole in G is the union of k pairwise disjoint and nonneighbouring holes. It is well know that if G does not contain any holes then its chromatic ... -
Polynomial bounds for chromatic number. I. Excluding a biclique and an induced tree
(Wiley, 2022-09-07)Let H be a tree. It was proved by Rödl that graphs that do not contain H as an induced subgraph, and do not contain the complete bipartite graph Kt,t as a subgraph, have bounded chromatic number. Kierstead and Penrice ... -
Polynomial bounds for chromatic number. III. Excluding a double star
(Wiley, 2022-10)A “double star” is a tree with two internal vertices. It is known that the Gyárfás-Sumner conjecture holds for double stars, that is, for every double star H, there is a function fH such that if G does not contain H as ... -
Polynomial Bounds for Chromatic Number. IV: A Near-polynomial Bound for Excluding the Five-vertex Path
(Springer, 2023-09-15)A graph G is H -free if it has no induced subgraph isomorphic to H. We prove that a P5-free graph with clique number ω ≥ 3 has chromatic number at most ωlog2(ω). The best previous result was an exponential upper bound ... -
Polynomial Timed Reductions to Solve Computer Security Problems in Access Control, Ethereum Smart Contract, Cloud VM Scheduling, and Logic Locking.
(University of Waterloo, 2020-08-28)This thesis addresses computer security problems in: Access Control, Ethereum Smart Contracts, Cloud VM Scheduling, and Logic Locking. These problems are solved using polynomially timed reductions to 2 complexity classes: ... -
Polypropylene Modified by Polydimethylsiloxane in Catalytic Cross Metathesis Reactions
(University of Waterloo, 2010-07-09)In this study, we were particularly interested in looking at the possibility that cross metathesis of olefins in melt phase could be used to produce polydimethylsiloxane (PDMS) modified polypropylene (PP). The intention ... -
Polypyrrole-based Nanofibrous Membrane Separator for Lithium-ion Battery
(University of Waterloo, 2021-12-22)A battery separator is one of the key components of a Lithium-ion battery (LIB). It serves as an insulator between the electrodes to prevent the internal short circuit. More importantly, the battery separator retains liquid ... -
Polypyrrole-Graphene based Flexible Supercapacitors
(University of Waterloo, 2020-05-13)The high interest in wearable technologies has inspired an increased demand for portable, flexible energy storage devices. Currently, most commercial electrochemical energy storage units, such as supercapacitors, are ...