Browsing Materials Science and Engineering - Ph.D. / Sc.D. by Title
Now showing items 1-20 of 1037
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2D and 3D periodic templates through holographic interference lithography : photonic and phononic crystals and biomimetic microlens arrays
(Massachusetts Institute of Technology, 2005)In this thesis a simple technique for controlling structure via holographic interference lithography was established and implemented. Access to various space groups including such important structures as the level set ... -
Ab initio investigations of solid electrolytes for lithium- and Sodium-ion batteries
(Massachusetts Institute of Technology, 2017)Solid-state electrolytes have the potential to dramatically improve the safety and longevity of state-of-the-art battery technology by replacing the flammable organic electrolytes currently employed in Li-ion batteries. ... -
Ab initio prediction of thermodynamics in alkali metal-air batteries
(Massachusetts Institute of Technology, 2014)Electric vehicles ("EVs") require high-energy-density batteries with reliable cyclability and rate capability. However, the current state-of-the-art Li-ion batteries only exhibit energy densities near ~150 Wh/kg, limiting ... -
Ab initio thermodynamics of phase-separating and cation-disordered cathodes for Li-ion batteries
(Massachusetts Institute of Technology, 2016)In order to accelerate the electrification of the automotive fleet, the energy density and power density limitations of commercial Li-ion battery cathodes (layered LiMO2) must be overcome. In this thesis, we use ab initio ... -
Ab-initio study of cathode materials for lithium batteries
(Massachusetts Institute of Technology, 2003)Using first principles calculations the effect of electronic structure on the stability of positive electrode materials for lithium rechargeable batteries is investigated. The investigation focuses upon lithiated α-NaFeO₂ ... -
Accounting for temperature and local structure in atomistic calculations of interface free energies in metals
(Massachusetts Institute of Technology, 2017)Interfaces are ubiquitous in crystalline materials and they predominantly govern the properties of metals at nanoscale. Free energy is the most significant characteristic of an interface that determines its behavior and ... -
Accurate nanofabrication techniques for high-index-contrast microphotonic devices
(Massachusetts Institute of Technology, 2005)High-refractive-index-contrast microphotonic devices provide strong light confinement allowing for sharp waveguide bends and small dielectric optical resonators. They allow dense optical integration and unique applications ... -
Acoustic assisted actuation of Ni-Mn-Ga ferromagnetic shape memory alloys
(Massachusetts Institute of Technology, 2006)Ferromagnetic shape memory alloys (FSMA) have been shown in recent work to exhibit large magnetic field induced strains. The material generally requires a large threshold field (of order 3-4 kOe) to initiate the strain. ... -
Activating oxygen chemistry on metal and metal oxides: design principles of electrochemical catalysts
(Massachusetts Institute of Technology, 2016)Electrochemical energy storage and conversion devices are important for the application of sustainable clean energies in the next decades. However, the slow kinetics of oxygen evolution reaction (OER) and oxygen reduction ... -
Active braze alloys for metal single layer grinding technology
(Massachusetts Institute of Technology, 1996)Components made of high-performance ceramics or superalloys are subject to strict requirements with regard to their geometric and dimensional accuracy. The surface finish and edge zone characteristics have a large effect ... -
Adsorption and conformation change of short helical peptides on silica and aluminosilicate surfaces
(Massachusetts Institute of Technology, 2002)Motivated by the challenges in understanding important features of protein adsorption, the interactions between (-helical peptides and a carefully selected set of model surfaces were studied. The peptide sequences contained ... -
Adsorption and multilayer assembly of charged macromolecules on neutral hydrophobic surfaces and applications to surface patterning
(Massachusetts Institute of Technology, 2006)Micrometer- and nanometer-scale chemical patterns are indispensable and ubiquitous in a range of applications, such as optoelectronic devices and (bio) chemical sensors. This thesis studies chemical surface patterning ... -
The adsorption of glyceryl esters at the alumina/toluene interface
(Massachusetts Institute of Technology, 1982) -
Adsorption of organic and inorganic ions on quartz
(Massachusetts Institute of Technology, 1958) -
Advanced engineered substrates for the integration of lattice-mismatched materials with silicon
(Massachusetts Institute of Technology, 2006)The dramatic advances in Si/SiO2-based microelectronic processing witnessed over the past several decades can largely be attributed to relatively material-independent device scaling. However, with physical and economic ... -
Advanced engineering materials for automotive engine components : cost and performance estimations
(Massachusetts Institute of Technology, 1993) -
Advanced materials, process, and designs for silicon photonic integration
(Massachusetts Institute of Technology, 2009)The copper (Cu) interconnect has become the bottleneck for bandwidth scaling due to its increasing RC time constant with the decreasing gate line width. Currently, silicon based optical interconnect is widely pursued as ... -
Advanced photoanodes for photoassisted water electrolysis
(Massachusetts Institute of Technology, 2014)With continuously growing energy demands, alternative, emission-free solar energy solutions become ever more attractive. However, to achieve sustainability, efficient conversion and storage of solar energy is imperative. ... -
Aging phenomena in ferrous martensites
(Massachusetts Institute of Technology, 1985) -
Aging phenomena in silver-copper alloys
(Massachusetts Institute of Technology, 1936)