Browsing Materials Science and Engineering - Ph.D. / Sc.D. by Title
Now showing items 433-452 of 1007
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III-V compositionally graded buffers for heterostructure integration
(Massachusetts Institute of Technology, 2015)InyGa₁-yAs alloys are critical in commercial applications such as high speed transistors, light emitting diodes, solid state lasers, photovoltaics, and photo-detectors. However, the range of compositions used in these ... -
III-V vertical nanowire transistor for ultra-low power applications
(Massachusetts Institute of Technology, 2017)Combining the superior carrier transport properties and flexible band structure engineering from III-V materials and ultimate scalability of vertical nanowire (VNW) device architecture, III-V VNW transistors are promising ... -
IIl-nitride nanowires and heterostructures : growth and optical properties on nanoscale
(Massachusetts Institute of Technology, 2014)Gallium nitride (GaN) and indium gallium nitride (InGaN) nanowires promise potential for further improving the electricity-to-light energy conversion efficiencies in light emitting diodes due to strain relaxation, reduced ... -
Imaging the recalescence behavior of undercooled nickel
(Massachusetts Institute of Technology, 1996) -
Impact of electrochemical process on the degradation mechanisms of AlGaN/GaN HEMTs
(Massachusetts Institute of Technology, 2014)AlGaN/GaN high electron mobility transistors (HEMTs) constitute a new generation of transistors with excellent electrical characteristics and great potential to replace silicon technology in the future, especially in high ... -
Impact of morphology and scale on the physical properties of periodic/quasiperiodic micro- and nano- structures
(Massachusetts Institute of Technology, 2012)A central pillar of real-world engineering is controlled molding of different types of waves (such as optical and acoustic waves). The impact of these wave-molding devices is directly dependent on the level of wave control ... -
Impact of scale on performance and technology in process-intensive industry
(Massachusetts Institute of Technology, 1999)Two surveys are performed to determine production methods, competitive strategies, and scale disadvantages for a group of small manufacturing plants. Detailed comparisons of economic, operational, and development activities ... -
Impact studies on fixed end rods
(Massachusetts Institute of Technology, 1954) -
Impedance spectroscopy study of water uptake and long-term degradation of immersed polyimide coatings
(Massachusetts Institute of Technology, 1994) -
Improved UHMWPE for use in total joint replacement
(Massachusetts Institute of Technology, 1997) -
Improvement in mechanical properties through structural hierarchies in bio-inspired materials
(Massachusetts Institute of Technology, 2011)Structural biological materials such as bone, nacre, insect cuticle, and sea sponge exoskeleton showcase the use of inferior building blocks like proteins and minerals to create structures that afford load-bearing and armor ... -
Improving the mechanical integrity of the bone cement mantle
(Massachusetts Institute of Technology, 1993) -
Improving the valuation of research and development : a composite of real options, decision analysis and benefit valuation frameworks
(Massachusetts Institute of Technology, 1998) -
In search of Mg battery cathode materials - a migration energy high-throughput screening machinery
(Massachusetts Institute of Technology, 2017)In this thesis, we demonstrate the results and progress of developing a high-throughput migration energy calculation machinery and applying it in search for Mg battery cathode materials. We discuss the key challenge of ... -
In vivo activation and biocompatibility of a MEMS microreservoir drug delivery device
(Massachusetts Institute of Technology, 2004)Temporal and spatial control over the delivery of therapeutic compounds is an important, fertile, and rapidly advancing field of study in medicine. This work describes the advancement of a new technology of drug delivery ... -
In vivo generation of 'vaccination nodes' using injectable alginate hydrogels for cancer immunotherapy
(Massachusetts Institute of Technology, 2009)Despite the amount of ongoing intensive research, tumor cells have continued to outwit us in the effort to combat and prevent cancer by exerting a number of mechanisms to evade and suppress anti-tumor immune responses. The ... -
In-fiber semiconductor filament arrays
(Massachusetts Institute of Technology, 2010)One-dimensional nanostructures with high aspect-ratios and nanometer cross-sectional dimensions have been the focus of recent studies in the persistent drive to miniaturize devices. Conventional bottom-up methods such as ... -
In-situ deposition of high-k dielectrics on III-V compound semiconductor in MOCVD system
(Massachusetts Institute of Technology, 2010)In situ deposition of high-k materials to passivate the GaAs in metal organic chemical vapor deposition (MOCVD) system was well demonstrated. Both atomic layer deposition (ALD) and chemical vapor deposition (CVD) methods ... -
The in-situ measurement of mechanical properties of multi-layer coatings
(Massachusetts Institute of Technology, 1990) -
In-situ TEM study of carbon nanomaterials and thermoelectric nanomaterials
(Massachusetts Institute of Technology, 2011)Graphene nanoribbons (GNRs) are quasi one dimensional structures which have unique transport properties, and have a potential to open a bandgap at small ribbon widths. They have been extensively studied in recent years due ...
