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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 621-640 of 1512
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Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO
(Journal of Visualized Experiments, 2016-07-01)Atmospheric pressure spatial atomic layer deposition (AP-SALD) was used to deposit n-type ZnO and Zn1-xMgxO thin films onto p-type thermally oxidized Cu2O substrates outside vacuum at low temperature. The performance of ... -
Resistive Switching Memory of TiO2 Nanowire Networks Grown on Ti Foil by a Single Hydrothermal Method
(Springer, 2017-04-01)The resistive switching characteristics of TiO2 nanowire networks directly grown on Ti foil by a single-step hydrothermal technique are discussed in this paper. The Ti foil serves as the supply of Ti atoms for growth of ... -
Simple plasma assisted atomic layer deposition technique for high substitutional nitrogen doping of TiO2
(AIP Publishing, 2018-03-21)In this work, a plasma assisted atomic layer deposition system was used to deposit nitrogen-doped titanium dioxide. A simple approach was developed that requires only a nitrogen plasma and short plasma exposure times to ... -
Efficient Triplet Exciton Fusion in Molecularly Doped Polymer Light-Emitting Diodes
(Wiley, 2017-04-04)Solution-processed polymer organic light-emitting diodes (OLEDs) doped with triplet-triplet annihilation (TTA)upconversion molecules, including 9,10-diphenylanthracene, perylene, rubrene and TIPS-pentacene, are reported. ... -
Bright and efficient blue polymer light emitting diodes with reduced operating voltages processed entirely at low-temperature
(Royal Society of Chemistry, 2015-09-03)Hybrid blue polymer light emitting diodes (PLEDs) with high efficiencies, luminance >20 000 cd m−2 and low operating voltages are obtained using processing temperatures ≤150 °C. By briefly applying an electric field across ... -
Fabrication of ZnO/Cu2O heterojunctions in atmospheric conditions: Improved interface quality and solar cell performance
(Elsevier, 2015-04-01)Zn1−xMgxO/Cu2O heterojunctions were successfully fabricated in open-air at low temperatures via atmospheric atomic layer deposition of Zn1−xMgxO on thermally oxidized cuprous oxide. Solar cells employing these heterojunctions ... -
Integrated Trajectory-Tracking and Vibration Control of Kinematically-Constrained Warehousing Cable Robots
(University of Waterloo, 2018-05-04)With the explosion of e-commerce in recent years, there is a strong desire for automated material handling solutions including warehousing robots. Cable driven parallel robots (CDPRs) are a relatively new concept which has ... -
Modelling of the Forging Process for a Magnesium Alloy Automotive Control Arm
(University of Waterloo, 2018-04-30)The automotive industry has placed significant emphasis on weight reduction to achieve better fuel economy while maintaining safety and quality standards. One way this can be achieved is by using forged magnesium alloys ... -
Feasibility Study of Ferromagnetic Particulate Path Diversion in Additive Manufacturing
(University of Waterloo, 2018-04-30)The use of electromagnetic actuator components typically involves a coil comprised of a stack-packed continuous winding, usually layered, and a core material of soft iron or at least a solenoid, similarly constructed, ... -
Aerosol Jet Printed Strain Gauge and Temperature Compensated Strain Gauge Design
(University of Waterloo, 2018-04-23)Aerosol jet printing (AJP) is a non-contact, computer aided design (CAD) based printing that allows for an aerosol stream, being focused by a sheath gas, to print patterns on non-planar surfaces based on the specified ... -
Experimental and numerical investigation of split sleeve cold expansion of AZ31B magnesium alloy
(University of Waterloo, 2018-04-23)The serious pollution problem caused by transportation can cause critical environmental effect such as global warming. This has drawn attention towards lighter materials for use in the transportation industry. Magnesium ... -
Laser Processing and Modelling of Multiple Memory Shape Memory Alloys
(University of Waterloo, 2018-04-18)Laser processing of NiTi shape memory alloys (SMA) has been identified as having great potential in surface treatment, welding, and novel performance requirement applications. However, no models have been developed to ... -
Characterization of the Quasi-Static and Fatigue Behavior of Forged AZ31B Magnesium Alloy
(University of Waterloo, 2018-04-17)Light-weighting is being aggressively targeted by automotive manufacturers as a method to reduce emissions. Magnesium (Mg) alloys due to their low density and high specific strength have therefore gained significant interest ... -
Power and Fuel Economy Optimization of Unthrottled Spark-Ignition Engines Using Highly Flexible Hydraulic Variable Valve Actuation System
(University of Waterloo, 2018-04-16)Variety of technologies along with the mechanisms for their implementations have been developed in order to pursue possible improvements in the performance and efficiency of gasoline engines. Yet, most of the commonly used ... -
Electrokinetic Transport Phenomena in Nanochannels and Applications of Nanochannel-based Devices in Nanoparticle Detection and Molecule Sensing
(University of Waterloo, 2018-04-12)Nanofluidics investigates transport phenomena, manipulation, and control of fluids and nano-sized objects in fluidic channels with an at least one-dimensional size smaller than 100 nm. At the nanoscale, fluids and objects ... -
Spanwise flow development within a laminar separation bubble under natural and forced transition
(Elsevier, 2018-09-01)The variation of streamwise and spanwise characteristic wavelengths of a NACA 0018 laminar separation bubble under natural and periodic excitation conditions is investigated experimentally. Periodic forcing is applied with ... -
Powder bed binder jetting additive manufacturing of silicone structures
(Elsevier, 2018-05-01)The feasibility of a hybrid additive manufacturing (AM) method combining material extrusion and powder bed binder jetting (PBBJ) techniques for fabrication of structures made of silicone (polysiloxane) is investigated in ... -
Assessment of the thermomechanical performance of continuous glass fiber-reinforced thermoplastic laminates
(Elsevier, 2018-05-01)The effects of temperature on the static tensile behavior of continuous E-glass/polyamide laminates were studied in order to assess the feasibility of using the material system for structural applications. Uniaxial tensile ... -
Effect of Pt loading and catalyst type on the pore structure of porous electrodes in polymer electrolyte membrane (PEM) fuel cells
(Elsevier, 2018-05-01)Catalyst layer (CL) has a significant impact on the overall pore structure of the entire electrodes, thereby impacting the transport processes and the performance of polymer electrolyte membrane (PEM) fuel cells. In this ... -
Additive Manufacturing of Soft Polysiloxane-based Bio-structures with Heterogeneous Properties
(University of Waterloo, 2018-03-26)This thesis is concerned with the development of novel additive manufacturing (AM) systems and methodologies for high speed fabrication of complex material-graded silicone structures with controllable internal features ...