Browsing Mechanical Engineering - Master's degree by Title
Now showing items 2595-2614 of 3833
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Nano-materials for novel magneto-rheological liquids and nano-fluids
(Massachusetts Institute of Technology, 2007)Introduction: Nanotechnology, in its many forms, has evolved as a forefront of the global scientific and technological frontier. Materials once disregarded as very small dust or particulate impurities twenty years ago, are ... -
Nano-scale scratching in chemical-mechanical polishing
(Massachusetts Institute of Technology, 2008)During the chemical-mechanical polishing (CMP) process, a critical step in the manufacture of ultra-large-scale integrated (ULSI) semiconductor devices, undesirable nano-scale scratches are formed on the surfaces being ... -
Nanoengineered surfaces for advanced thermal management
(Massachusetts Institute of Technology, 2009)Thermal management is a critical challenge for a variety of applications including integrated circuits (ICs) and energy conversion devices. As the heat fluxes exceed 100 W/cm2, novel cooling solutions need to be developed. ... -
Nanofluid-based receivers for high-temperature, high-flux direct solar collectors
(Massachusetts Institute of Technology, 2010)Solar power plants with surface receivers have low overall energy conversion efficiencies due to large emissive losses at high temperatures. Alternatively, volumetric receivers promise increased performance because solar ... -
Nanofluidic system for single molecule manipulation and analysis
(Massachusetts Institute of Technology, 2008)This thesis focuses on characterizing and controlling the translocation of single 48.5 kbp [lambda]-DNA molecules through an artificial nanopore with the objective of enabling multiple measurements on the same molecule. ... -
Nanostructured thin film thermoelectric composite materials using conductive polymer PEDOT:PSS
(Massachusetts Institute of Technology, 2013)Thermoelectric materials have the ability to convert heat directly into electricity. This clean energy technology has advantages over other renewable technologies in that it requires no sunlight, has no moving parts, and ... -
Nanostructures and alloys : multiple scattering and nonlinearities in phonon transport
(Massachusetts Institute of Technology, 2014)Understanding how thermal transport is affected by disorder is crucial to the prediction and engineering of novel materials suitable for thermoelectric and device applications. Ab initio methods have demonstrated accurate ... -
Natural ventilation in buildings : modeling, control and optimization
(Massachusetts Institute of Technology, 2014)Natural ventilation in buildings has the potential to reduce the energy consumption usually associated with mechanical cooling while maintaining thermal comfort and air quality. It is important to know how building parameters, ... -
Naval additive manufacturing : bridging the gap between research and implementation
(Massachusetts Institute of Technology, 2019)Additive manufacturing (AM), commonly known as three-dimensional printing, presents numerous advantages over traditional production methods, including design-to-end-use process reduction and on-demand generation of needed ... -
Navigation and manipulation for autonomous underwater dismantling of offshore structures
(Massachusetts Institute of Technology, 2015)The dismantling of offshore structures, known as decommissioning, is a complex task in the oil and gas industry, driven by strict environmental standards. As the environments in which decommissioning is necessary become ... -
NC verification using octree
(Massachusetts Institute of Technology, 1998) -
Near-field radiation in nanoscale gaps
(Massachusetts Institute of Technology, 2011)The theoretical calculations for near-field radiation heat transfer based on a local dielectric constant approach indicate that the heat transfer will go to infinity as the gap becomes very small. To correct this anomaly, ... -
Needle-free drug delivery using shock wave techniques
(Massachusetts Institute of Technology, 2006)A recent advancement in the area of needle-free injection systems has been the development of devices capable of epidermal delivery of powder medications. These devices use high-pressure compressed gas to accelerate drug ... -
Needle-less injection system for drug delivery
(Massachusetts Institute of Technology, 2003) -
Network design and fleet allocation model for vessel operation
(Massachusetts Institute of Technology, 2006)Containership operators in the U.S. are confronted with a number of problems in the way they make critical fleet allocation decisions to meet the increase of shippers' demands. Instead of the empirical approach, this ... -
A network model of the human aqueous outflow system
(Massachusetts Institute of Technology, 1988) -
Neural stem cell differentiation in collagen scaffolds for retinal tissue engineering
(Massachusetts Institute of Technology, 2008)Rat neural stem cells (NSCs) were cultured in monolayer or in porous collagen scaffolds and exposed to neurogenic or non-neurogenic medium to determine the effects on neural differentiation and neurite growth. Nestin, ... -
Neurally-controlled ankle-foot prosthesis with non-backdrivable transmission for rock climbing augmentation
(Massachusetts Institute of Technology, 2019)This thesis presents the design and evaluation of a neurally-controlled ankle-foot prosthesis optimized to enhance rock climbing ability in persons with transtibial amputation. The bionic rock climbing prosthesis restores ... -
A neuromuscular-model based control strategy for powered ankle-foot prostheses
(Massachusetts Institute of Technology, 2009)In the development of a powered ankle-foot prosthesis, it is desirable to provide the prosthesis with the ability to exhibit human-like dynamics. A simple method for achieving this goal involves trajectory tracking, where ... -
New approaches to the integration of organizational maintenance and failure data during submarine maintenance planning
(Massachusetts Institute of Technology, 2019)Planning for maintenance periods for U.S. Navy submarines is difficult due to schedule and cost constraints, operating cycles, and logistical concerns. Organizational maintenance and failure data is vital to understanding ...
