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Now showing items 11-20 of 253
Study of phenomenologies during templated solid-state dewetting of thin single crystal films
(Massachusetts Institute of Technology, 2016)
Generally, thin films are away from equilibrium in the as-deposited state and will agglomerate, or dewet, to form islands given sufficient atomic mobility. This dewetting process can occur in the solid state, well below ...
Annealing for intrinsic point-defect control and enhanced solar cell performance : the case of H₂S and tin sulfide (SnS)
(Massachusetts Institute of Technology, 2015)
This thesis explores the possibility of tin monosulfide (SnS) as a new and promising solar cell absorber material. Out of many other Earth-abundant binary semiconductors, it was selected for study because it has a strong ...
Voltage programmable materials
(Massachusetts Institute of Technology, 2015)
The physical and chemical properties of nanoscale materials derive largely from structure and composition at interfaces. The possibility to electrically modify these interfacial characteristics would provide a powerful ...
Convection enhanced electrochemical energy storage
(Massachusetts Institute of Technology, 2018)
Electrochemical energy storage will play a pivotal role in our society's energy future, providing vital services to the transportation, grid, and residential markets. Depending on the power and duration requirements of a ...
Modeling of mechanisms affecting the growth and breakdown of iron sulfide films
(Massachusetts Institute of Technology, 2016)
Modeling the behavior of ionic materials in electrochemical environments is a topic of great scientific interest for important systems like like fuel cells, batteries, and catalysts and corrosion passive films. However, ...
Magnetothermal multiplexing for biomedical applications
(Massachusetts Institute of Technology, 2017)
Research on biomedical applications of magnetic nanoparticles (MNPs) has increasingly sought to demonstrate noninvasive actuation of cellular processes and material responses using heat dissipated in the presence of an ...
First principles investigation and design of fluorophosphate sodium-ion battery cathodes
(Massachusetts Institute of Technology, 2016)
Lithium-ion batteries are currently the most widely used consumer energy storage technology. Recently, lithium-ion batteries have been evaluated for use in mitigating the intermittent power supply of leading renewable ...
Germanium on silicon heteroepitaxy for high efficiency photovoltaic devices
(Massachusetts Institute of Technology, 2016)
Optoelectronic devices based on III-V direct gap semiconductors enable efficient energy conversion for photovoltaic cells, light emission for LEDs, and on-chip communication via various microphotonic components. However, ...
Structure-property relationships in physical polymer gels
(Massachusetts Institute of Technology, 2017)
Associating polymer networks are included in a large number of materials where it is important to control and tune the rheological response of the material, particularly including responses to temperature, shear, or changes ...
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 ...