Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1021-1040 of 1483
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Nano Positioning Control Using Magnetostrictive Actuators
(University of Waterloo, 2007-05-18)The focus of this thesis is on the development of control systems for nano- positioning actuators using magnetostrictive materials. Magnetostrictive materials have large strokes and fast responses. However, they are ... -
Nano-orifice based Dielectrophoretic Manipulation and Characterization of Nanoparticles and Biological Cells
(University of Waterloo, 2019-08-02)Dielectrophoresis (DEP) is the motion of a dielectric particle in an aqueous solution due to the polarization effects in a non-uniform electric field. Due to its property of label-free, scalable, and capable of generating ... -
Nanofabrication Using Electron Beam Lithography: Novel Resist and Applications
(University of Waterloo, 2013-09-04)This thesis addresses nanostructure fabrication techniques based on electron beam lithography, which is the most widely employed nanofabrication techniques for R&D and for the prototyping or production of photo-mask or ... -
Nanomaterials in Water Remediation: Functionalization and Applications for Pharmaceutical Removal in Municipal Wastewater Effluent
(University of Waterloo, 2019-09-10)With an increasing population, there is a higher pressure on natural resources including water. Increased water consumption, altered hydrology and pollution, threaten the sustainability of aquatic ecosystems and water ... -
Nanoparticle Focussing Using Aerodynamic Lenses and a Divergent Nozzle
(University of Waterloo, 2021-11-23)Since the COVID-19 pandemic has been a global crisis that has posed enormous and diverse challenges to humanity, it has revealed the urgent need for further study into a variety of properties of viruses, including virus ... -
Nanoscale Manipulation of Electrokinetic Transport for Iontronic Applications based on Surface Modification
(University of Waterloo, 2021-08-10)Electrokinetic transport demonstrates a lot of new physical behaviors in nanofluidic systems due to the high surface-to-volume ratios and interactions between the fluid and walls of nanofluidic systems. The unique properties ... -
Nanostructure Enabled Memristor and Supercapacitor
(University of Waterloo, 2023-01-09)The composition of conventional circuits is based on four basic elements: resistors, capacitors, inductors, and memristors. Among them, resistors and inductors have been widely studied. Memristor has a desirable application ... -
Nanostructured complex hydride systems for solid state hydrogen storage
(University of Waterloo, 2012-01-19)The present work reports a study of the effects of the formation of a nanostructure induced by high-energy ball milling, compositions, and various catalytic additives on the hydrogen storage properties of LiNH2-LiH and ... -
Nanostructured conformal hybrid solar cells: a promising architecture towards complete charge collection and light absorption
(Springer, 2013-08-22)We introduce hybrid solar cells with an architecture consisting of an electrodeposited ZnO nanorod array (NRA) coated with a conformal thin layer (< 50 nm) of organic polymer-fullerene blend and a quasi-conformal Ag top ... -
Nanostructured Light Metal Hydrides Based on Li, Al, Na, B and N for Solid State Hydrogen Storage
(University of Waterloo, 2013-08-01)The present work reports a study of the effects of the compositions, and various catalytic additives and nanostructuring by high-energy ball milling, on the hydrogen storage properties of LiBH4, NaBH4, LiNH2 and LiAlH4 ... -
Nanostructured Materials for Electrochemical CO2 Reduction to Multicarbon Products
(University of Waterloo, 2022-09-07)Electrochemical CO2 reduction technology offers promise as a method of carbon storage and energy storage in a world where anthropogenic CO2 levels in the atmosphere are linked with climatic degradation. The main missing ... -
Nanostructured TM-Boron Based Hydrides for Solid State Hydrogen Storage (TM-transition metal)
(University of Waterloo, 2016-11-30)Several complex borohydride systems were investigated in this work as potential candidates for on-demand hydrogen generation and/or storage. All selected systems were synthesized by ball milling (BM) in expectation of ... -
Narrow Urban Vehicles with an Integrated Suspension Tilting System: Design, Modeling, and Control
(University of Waterloo, 2018-11-20)Narrow urban vehicles are proposed to alleviate urban transportation challenges like congestion, parking, fuel consumption, and pollution. They are designed to seat one or two people in tandem, which saves space in road ... -
Natural Convection in Sealed Glazing Units: A Review
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1989)In cold climates the augmented edge-glass heat transfer at the bottom of a glazing system creates a special problem. This is where condensed water and/or frost most readily occur. Two mechanisms determining the rate of ... -
Near-field Vortex Dynamics of Flows Emerging from a Rectangular Duct
(University of Waterloo, 2019-04-26)Shear layers and jets have motivated many researches to use experimental, theoretical and numerical methods for the better understanding of the fundamental physics and optimizing the flow characteristics that best suit ... -
Neck Response in Out of Position Rear Impact Scenarios
(University of Waterloo, 2012-09-27)Whiplash injuries occur in automotive crashes and may cause long term health issues such as headache, neck pain, and visual and auditory disturbance. Whiplash-Associated Disorders are very costly and can impair the quality ... -
A New Adaptive Controller for Performance Improvement of Automotive Suspension Systems with MR Dampers
(SAE International, 2014-04-01)A control algorithm is developed for active/semi-active suspensions which can provide more comfort and better handling simultaneously. A weighting parameter is tuned online which is derived from two components - slow and ... -
A New Adiabatic Compressed Air Energy Storage System: Modeling, Design, Optimization, and Experiments
(University of Waterloo, 2020-09-01)Wind farms and solar farms often face challenges in delivering consistent power output during peak demand due to the inconsistency of wind and solar resources. An adiabatic compressed air energy storage (ACAES) system based ... -
A new approach to rapidly generate random periodic representative volume elements for microstructural assessment of high volume fraction composites
(Elsevier, 2018-07-15)An algorithm based on event-driven molecular dynamics theory was developed to rapidly generate periodic representative volume elements (RVEs) with nonuniform distributions for both unidirectional fibre-reinforced and ... -
A New Approach to Reinforcement Learning for Sequential Robotic Tasks using a Chained Options Model and Subtask-Focused Rewards
(University of Waterloo, 2021-09-09)Reinforcement Learning for Robotics is a trending area of research with tremendous potential for widescale industry adoption. To its detriment, large amounts of environmental interactions are typically required by robotic ...