Browsing Theses by Title
Now showing items 3241-3260 of 15522
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Design, fabrication and characterization of ferroelectret energy harvester
(University of Waterloo, 2019-04-22)Energy harvesters gained significant interest over the last decade with the reduce in power requirements of today’s electrical devices and with the fast developments in low-power electronics. Limited battery life is one ... -
Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation
(University of Waterloo, 2018-07-24)Conventional amplitude modulated (AM) open loop MEMS gyroscopes experience a significant performance trade-off between having a large bandwidth or high sensitivity. It is impossible to improve both metrics at the same time ... -
Design, Fabrication and Control of a Magnetic Capsule Robot for the Human Esophagus
(University of Waterloo, 2010-02-19)Biomedical engineering is the application of engineering principles and techniques to the medical field. It combines the design and problem solving skills of engineering with medical and biological sciences to improve ... -
Design, Fabrication and Validation of a CMOS-MEMS Kelvin Probe Force Microscope
(University of Waterloo, 2013-04-25)The Kelvin Probe Force Microscope is a type of scanning probe instrument that is used to discern the different work functions of a sample. A sharp probe at the end of a cantilever is lowered onto a substrate where electrostatic ... -
Design, Fabrication, and Characterization of a 2-D SOI MEMS Micromirror with Sidewall Electrodes for Confocal MACROscope Imaging
(University of Waterloo, 2010-08-26)Micro-Electro-Mechanical Systems (MEMS) micromirrors have been developed for more than two decades along with the development of MEMS technology. They have been used into many application fields: optical switches, digital ... -
Design, Fabrication, and Testing of a Dielectric Elastomer based Ambulatory Active Compression Device
(University of Waterloo, 2016-09-28)Various vascular disorders such as deep vein thrombosis and edema have been associated with the pooling of venous blood in the lower limbs due to extended periods of immobility. Prophylaxis against peripheral vascular ... -
Design, Implementation and Control of a Magnetic Levitation Device
(University of Waterloo, 2008-05-06)Magnetic levitation technology has shown a great deal of promise for micromanipulation tasks. Due to the lack of mechanical contact, magnetic levitation systems are free of problems caused by friction, wear, sealing and ... -
Design, Implementation, and Control of a Magnetic Levitated Planar Motor
(University of Waterloo, 2024-01-22)Magnetic levitated planar motors employ electromagnetic force to levitate and manipulate the movers. They have the characteristics of multi-degrees-of-freedom motion, contactless operation, high precision and high acceleration. ... -
Design, Modeling and Analysis of a Continuous Process for Hydrogenation of Diene based Polymers using a Static Mixer Reactor
(University of Waterloo, 2007-05-10)Hydrogenated nitrile butadiene rubber (HNBR) which is known for its excellent elastomeric properties and mechanical retention properties after long time exposure to heat, oil and air is produced by the catalytic hydrogenation ... -
Design, Modeling, and Analysis for MAC Protocols in Ultra-wideband Networks
(University of Waterloo, 2008-05-06)Ultra-wideband (UWB) is an appealing transmission technology for short-range, bandwidth demanded wireless communications. With the data rate of several hundred megabits per second, UWB demonstrates great potential in ... -
Design, Modeling, and Control of an Active Prosthetic Knee
(University of Waterloo, 2008-10-01)The few microcontroller based active/semi-active prosthetic knee joints available commercially are extremely expensive and do not consider the uncertainties of inputs sensory information. Progressing in the controller of ... -
Design, Modeling, and Nonlinear Dynamics of a Cantilever Beam-Rigid Body Microgyroscope
(University of Waterloo, 2013-12-06)A new type of cantilever beam gyroscope is introduced, modeled, and analyzed. The main structure includes a cantilever beam and a rigid body attached to the free end of the beam. The model accounts for the eccentricity, ... -
Design, Modelling and Fabrication of a Hybrid Energy Harvester
(University of Waterloo, 2014-01-23)As sources of energy are becoming more scarce and expensive, energy harvesting is receiving more global interest and is currently a growing field. Energy harvesting is the process of converting ambient energy, such as ... -
Design, Modelling, and Fabrication of a Low Frequency Piezoelectromagnetic Energy Harvester
(University of Waterloo, 2017-08-31)The growing demand for electricity has put enormous pressure on the current power grid infrastructure and has caused several major blackouts over the past few decades. As a result, there has been a shift towards a modernized ... -
Design, Modelling, Fabrication & Testing of a Miniature Piezoelectric-based EMF Energy Harvester
(University of Waterloo, 2014-05-21)Wireless sensing applications have extended into power transmission line monitoring applications. Minimal power consumption of sensor electronics have enabled kinetic energy harvesting systems to provides a means of self ... -
Design, Optimization and Fabrication of Amorphous Silicon Tunable RF MEMS Inductors and Transformers
(University of Waterloo, 2007-01-19)High performance inductors are playing an increasing role in modern communication systems. Despite the superior performance offered by discrete components, parasitic capacitances from bond pads, board traces and packaging ... -
Design, Optimization, and Experimental Characterization of a Novel Magnetically Actuated Finger Micromanipulator
(University of Waterloo, 2018-09-20)The ability of external magnetic fields to precisely control micromanipulator systems has received a great deal of attention from researchers in recent years due to its off-board power source. As these micromanipulators ... -
Design, Prototyping, and Testing of an In-Wheel Suspension System
(University of Waterloo, 2009-09-30)This thesis presents a study of a novel suspension system which is placed inside a vehicle's wheel. The In-wheel suspension system isolates the sprung mass from excitations similar to conventional suspension systems. In ... -
Design, Simulation and Fabrication of Photonic Crystal Slab Waveguide Based Polarization Processors
(University of Waterloo, 2009-05-22)The Photonic Crystal (PC) is a potential candidate for a compact optical integrated circuit on a solid state platform. The fabrication process of a PC is compatible with CMOS technology; thus, it could be potentially ... -
Design, Synthesis and Biological Evaluation of 2,4-Disubstituted Pyrimidine Derivatives: Multifunctional Candidates as Potential Treatment Options for Alzheimer’s Disease
(University of Waterloo, 2011-08-30)Alzheimer’s disease (AD) is a highly complex and rapidly progressive neurodegenerative disorder characterized by the systemic collapse of cognitive function and formation of dense amyloid-β (Aβ) plaques and neurofibrillary ...