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Now showing items 21-30 of 253
Understanding the active sites of Mg-Al oxide catalysts in the formation of aromatic platform chemicals from acetaldehyde
(Massachusetts Institute of Technology, 2018)
The aromatization of acetaldehyde derived from bio-based feedstocks offers a sustainable route to obtaining valuable BTX (benzene, toluene, and xylenes)-like platform chemicals traditionally produced from petroleum naphtha. ...
Modeling the operating voltage of liquid metal battery cells
(Massachusetts Institute of Technology, 2014)
A one-dimensional, integrative model of the voltage during liquid metal battery operation has been developed to enhance the understanding of performance at the cell level. Two liquid metal batteries were studied: Mg-Sb for ...
Synthesis and characterization of infrared quantum dots
(Massachusetts Institute of Technology, 2014)
This thesis focuses on the development of synthetic methods to create application ready quantum dots (QDs) in the infrared for biological imaging and optoelectronic devices. I concentrated primarily on controlling the size ...
Design of a multifunctional biomineralized armor system : the shell of chitons
(Massachusetts Institute of Technology, 2014)
Nature provides many examples of flexible armor systems which may serve as a source of inspiration for materials scientists and engineers. This thesis explores multiscale material and morphological design principles of the ...
Mechanisms governing the growth, reactivity and stability of iron sulfides
(Massachusetts Institute of Technology, 2015)
The kinetics of electrochemical processes in ionic materials are fundamentally governed by dynamic events at the atomic scale, including point defect formation and migration, and molecular interactions at the surface. A ...
Integrated infrared sensor platform
(Massachusetts Institute of Technology, 2017)
Infrared spectrum, especially mid-infrared range (2.512tm) covers the absorption peaks of many important chemicals including carbon monoxide, methane and water vapor. By analyzing the absorption spectrum of achemical, one ...
Investigation of molten salt electrolytes for low-temperature liquid metal batteries
(Massachusetts Institute of Technology, 2015)
This thesis proposes to advance our ability to solve the challenge of grid-scale storage by better positioning the liquid metal battery (LMB) to deliver energy at low levelized costs. It will do this by rigorously developing ...
Toward efficient and stable quantum dot solar cells : design and characterization
(Massachusetts Institute of Technology, 2016)
This thesis focuses on the optical and electronic properties of lead sulfide (PbS) quantum dots (QDs) for the development of QD solar cells. Near-infrared active PbS QDs composed of earth-abundant elements have emerged as ...
Shape memory ceramics in small volumes
(Massachusetts Institute of Technology, 2016)
Shape memory ceramics rely on martensitic transformations which are similar to those found in metallic shape memory materials, but ceramics offer several advantages over metals such as higher operating temperatures and ...
Novel approaches to investigate behaviors of bacteria by atomic force microscopy and circulating tumor cells through microfluidics
(Massachusetts Institute of Technology, 2014)
The adaptability and apparent ingenuity of renegade and intruding cells within the human body present formidable challenges in warding off disease. As the longevity of humans increases, cancer will afflict greater numbers, ...