Browsing MIT Theses by Title
Now showing items 22524-22543 of 61728
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Fabrication of high aspect ratio silicon nanostructure arrays by metal-assisted etching
(Massachusetts Institute of Technology, 2010)The goal of this research was to explore and understand the mechanisms involved in the fabrication of silicon nanostructures using metal-assisted etching. We developed a method utilizing metal-assisted etching in conjunction ... -
The fabrication of high packing density ceramic powder beds for the three dimensional printing process
(Massachusetts Institute of Technology, 1997)Three Dimensional Printing is a solid freeform fabrication process which can be used to create parts directly from CAD models. In the past, the 3DP process has been used to create structural ceramic parts using spray dried ... -
Fabrication of high-quality microflexures using micromilling techniques
(Massachusetts Institute of Technology, 2010)This research focuses on the feasibility of using micromilling as a process for fabricating the flexural body of mesoscale nanopositioners. A desire to fabricate non-silicon microflexures for more favorable material ... -
Fabrication of high-throughput critical-angle X-ray transmission gratings for wavelength-dispersive spectroscopy
(Massachusetts Institute of Technology, 2013)The development of the critical-angle transmission (CAT) grating seeks both an order of magnitude improvement in the effective area, and a factor of three increase in the resolving power of future space-based, soft x-ray ... -
Fabrication of InGaP LEDs on a graded buffer substrate
(Massachusetts Institute of Technology, 2007)Introduction: Computer display panels create a vast color palette by combining color from three light emitting diodes (LEDs), each producing red, green, or blue light. The light from these three LEDs is chosen so that the ... -
Fabrication of In₂(Se, Te)₃ chalcogenide thin films by thermal co-evaporation
(Massachusetts Institute of Technology, 2001)In₂(Se, Te)₃ III-VI chalcogenides belong to a unique class of phase change materials that have interesting optical and electrical properties, making them suitable for a wide variety of applications, including absorbers for ... -
Fabrication of large-area 100 nm-period gratings using achromatic holographic lithography
(Massachusetts Institute of Technology, 1992) -
Fabrication of metallic nanostructures from sputtered nanocluster precursors
(Massachusetts Institute of Technology, 2004)This thesis studies the morphological and electrical properties of copper nanocluster devices generated by DC magnetron sputtering and annealed at temperatures up to 1100 C. At each annealing step, the resistivity of the ... -
Fabrication of microfluidic devices for artificial respiration
(Massachusetts Institute of Technology, 2007)We are developing elastomeric polydimethylsiloxane (PDMS) microfluidic devices incorporated with photoactive thin films to create an implantable artificial respiration platform. Whereas state-of-the-art respiration support ... -
The fabrication of nano-scale engineered surfaces to investigate the enhancement of boiling heat transfer and CHF in nuclear reactors
(Massachusetts Institute of Technology, 2019)This work looks into the feasibility of utilizing nanotechnology in order to improve the performance of pressurized water reactors (PWRs) in the nuclear industry. Through growing zinc oxide nanowires (ZnO NW) on the surface ... -
Fabrication of nanoscale magnetic domains using block-copolymer lithography
(Massachusetts Institute of Technology, 2014)The tendency of PS-b-PDMS to phase separate, the tunability of the resulting morphology and the sufficient etch contrast between PS and PDMS makes the block copolymer ideal for creating patterns that can be transferred ... -
Fabrication of optical-mode converters for efficient fiber-to-silicon-waveguide couplers
(Massachusetts Institute of Technology, 2007)Optical-mode converters are needed to efficiently couple light from an optical fiber to a photonic circuit by matching and transforming the propagating modes. This work is based on a horizontally-tapered coupler, in which ... -
The fabrication of photonic bandgap bridge resonator structures
(Massachusetts Institute of Technology, 1994) -
Fabrication of reinforced alginate fibers for cell based therapies
(Massachusetts Institute of Technology, 2016)Type I Diabetes is a condition in which the pancreas does not produce enough insulin, leading to dysregulation in glucose metabolism. Most Type I diabetics take insulin injections after each meal in order to remain euglycemic. ... -
Fabrication of sensitive high-temperature superconducting bolometers on a yttria-stabilized zirconia membrane
(Massachusetts Institute of Technology, 1995) -
Fabrication of singulated c-Si solar cells for semi-flexible photovoltaic modules
(Massachusetts Institute of Technology, 2019)The decreasing cost of photovoltaics over the last decade has resulted in a rapid proliferation of solar cells into the energy portfolio of countries like China, the United States, and Germany. Despite great reductions in ... -
Fabrication of stress controlled silicon oxide for free- standing MEMS Devices
(Massachusetts Institute of Technology, 2014)In development of the critical -angle transmission (CAT) grating, structural failure of the thin self-standing grating membrane posts a challenge for manufacturing yield. The major risk comes from the strongly compressive ... -
Fabrication of superconducting nanowire single proton detectors
(Massachusetts Institute of Technology, 2005)The future NASA Mars project will need an ultra-fast, highly sensitive photodetector to increase the bandwidth of free-space long-range communication, which is now done primarily using RF signals. Our original motivation ... -
Fabrication of tissue engineering scaffolds with spatial control over architecture and cell-matrix interactions in 3D
(Massachusetts Institute of Technology, 2000)The key accomplishment of this work is the demonstration of spatial control over architecture and surface chemistry in three-dimensional tissue engineering scaffolds. Tissues are characterized by a well-defined three-dimensional ... -
Fabrication of tissue scaffolds using projection micro-stereolithography
(Massachusetts Institute of Technology, 2015)In vitro liver models are a critical tool in pharmaceutical research, yet standard hepatocyte cultures fail to capture the complexity of in vivo tissue behavior. One of the most critical features of the in vivo liver is ...
