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Pottery engineering in ancient Guerrero, Mexico : the site of Las Fundiciones
(Massachusetts Institute of Technology, 2007)
This thesis examines ancient pottery from the site of Las Fundiciones, Guerrero, Mexico. Because this site provides the only documented evidence of prehispanic metal smelting in Mesoamerica it is critical to examine artifacts ...
Effects of catalyst pretreatment for carbon nanotube growth
(Massachusetts Institute of Technology, 2007)
The effects of pretreatment of iron catalyst for carbon nanotube (CNT) growth was studied. CNTs were grown on Fe/A1203 (1/10 nm) thin-film catalyst deposited on silicon substrates via exposure to C2H4 in a thermal chemical ...
Temperature effects on the electronic conductivity of single-walled carbon nanotubes
(Massachusetts Institute of Technology, 2007)
The room-temperature electronic conductivity and temperature dependence of conductivity were measured for samples of carbon nanotubes of three types: pristine; functionalized with a nitrobenzene covalent functionalization, ...
Processing factors contributing to growth and decline in the steel industry
(Massachusetts Institute of Technology, 2007)
During the second half of the twentieth century, a technological shift occurred in the steel industry. A different mix of refining and melting furnaces were used, with increasing use being made of basic oxygen and electric ...
Fabrication and characterization of perpendicular magnetic anisotropy thin-film CoCrPt grown on a Ti underlayer
(Massachusetts Institute of Technology, 2015)
CoCrPt has potential applications as a memory storage technology because of its perpendicular magnetic anisotropy (PMA) characteristics. An underlayer can be used to ensure the out-of-plane magnetization required for PMA ...
Swelling properties of hydrogel coatings on neural devices
(Massachusetts Institute of Technology, 2014)
Glial scarring is a major problem seen in brain electrode implants that can hinder electrode function. One major contributing factor is the mechanical mismatch between the stiff electrode and the soft brain tissue'. Hydrogel ...
Design of an absorbent and comfortable sanitary napkin for applications in developing countries
(Massachusetts Institute of Technology, 2014)
Menstrual hygiene is an often-ignored problem in international development: lack of access to sanitation keeps women out of schools and the labor force. Sanitary napkin solutions to this issue normally focus on supply chain ...
Modeling trabecular microstructure evolution via genetic algorithm
(Massachusetts Institute of Technology, 2014)
Connecting structure to properties, and optimizing properties by controlling structure is one of the fundamental goals of materials science and engineering. No where is this connection more apparent than with biomaterials, ...
Thin film BCZT in a capacitive thermo-electric converter
(Massachusetts Institute of Technology, 2016)
Thin film BCZT was processed, optimized, and analyzed from powder to ceramic to film for use in a capacitive thermos-electric converter. The idea of using a temperature dependent dielectric to turn heat into electricity ...
Scaling the rock : a micromechanical model for the elastic properties of hydrated cement pastes
(Massachusetts Institute of Technology, 2011)
Cement is the most widely produced material worldwide. However, the understanding on how its nanoscale composition affect its microscale mechanical properties is limited. In this thesis, a micromechanical model for the ...