Browsing Theses - Materials Science and Engineering by Title
Now showing items 1-20 of 1880
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1996 Taurus/Sable and Mystique/Contour bumper production planning
(Massachusetts Institute of Technology, 1994) -
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 ... -
3D print quality in the context of PLA color
(Massachusetts Institute of Technology, 2016)3D printing is a hot topic in manufacturing and a truly useful tool, but it has limitations. Print quality properties - like raft peelability, dimensional tolerance and surface roughness - are hard to calibrate perfectly. ... -
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 screening of lithium diffusion rates in transition metal oxide cathodes for lithium ion batteries
(Massachusetts Institute of Technology, 2012)A screening metric for diffusion limitations in lithium ion battery cathodes is derived using transition state theory and common materials properties. The metric relies on net activation barrier for lithium diffusion. ... -
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 simulation of novel solid electrolytes
(Massachusetts Institute of Technology, 2014)All solid-state batteries may be a solution to some of the problems facing conventional organic electrolytes in Li and Na-ion batteries, but typically conductivities are very low. Reports of fast lithium conduction in Li ... -
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 ... -
Accelerating new project deployment with manufacturing guidelines
(Massachusetts Institute of Technology, 1994) -
Accelerating time-to-money for a semiconductor wafer fab capacity ramp
(Massachusetts Institute of Technology, 1996) -
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 ... -
Acid-base catalysts for polycondensation of acetaldehyde in flow
(Massachusetts Institute of Technology, 2015)Acetaldehyde is used as a bio-oil model compound in a polycondensation reaction over two acid-base catalysts, pelletized Evonik P25 TiO₂ and an activated hydrotalcite-like compound (HTlc), to produce high molecular weight ... -
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. ... -
Activated sintering of bismuth-doped zinc oxide ceramics
(Massachusetts Institute of Technology, 1982) -
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 ... -
Active hyperspectral imaging of chemicals on surfaces
(Massachusetts Institute of Technology, 2014)Active hyperspectral imaging (HSI) is a promising technique for the detection of chemicals at standoff distances. In active HSI, a target is illuminated by a laser source at many different wavelengths and a camera obtains ... -
Adhesive properties of silicone resins
(Massachusetts Institute of Technology, 1998)
