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Showing 1 to 20 of 142 for “"aluminum oxide"”.
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Microstructural Control of Aluminum/aluminum Oxide Electrochemistry: Aluminum/aluminum Oxide Photonic Devices
… cross-sectional microcavities and conformal aluminum electrodes, operating in Ne/Xe gas mixtures. In addition, a microchannel plasma device with complex electrode geometries have been fabricated in a single sheet of aluminum foil with an active area of over 30 cm 2. Power consumption as low …
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Ionized Physical Vapor Deposition of Aluminum Oxide
Made available in DSpace on 2017-07-06T18:55:08Z (GMT). No. of bitstreams: 3 Li_Ning_MS.pdf: 51415629 bytes, checksum: c29c8d58534efcdd114931c9fc6f3d8d (MD5) Li_Ning_MS_ABS.pdf: 619486 bytes, checksum: 41ecf59db6588595b2e30243525fce36 (MD5) license.txt: 4813 bytes, checksum: …
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Hydrogen in aluminum oxide and at the aluminum oxide/aluminum interface: an ab initio thermodynamics and Monte Carlo investigation
… Moreover, Al₂O₃ is often formed by oxidizing aluminum, resulting in an Al₂O₃/Al interface. The interface structure plays a critical role in these applications, but its buried nature makes experimental characterization challenging. This thesis utilizes ab initio statistical thermodynamics to …
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Ultraviolet Stimulated Thermoluminescent Response Characteristics of Aluminum Oxide
This investigation has demonstrated that some aluminum oxide crystals have high sensitivity and are well suited for detecting and measuring ultraviolet radiation rates significantly less than 0.1 pW/cm2. The thermoluminescent glow curve, linearity of response, and fading of the crystals were …
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Porous Aluminum-Oxide Coatings by Anodic Spark Deposition
Made available in DSpace on 2014-12-14T15:24:00Z (GMT). No. of bitstreams: 1 7709222.pdf: 6578359 bytes, checksum: b9cda3c2f7106af6910349246a45062d (MD5) Previous issue date: 1976
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Sintering mechanisms and surface diffusion for aluminum oxide
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1982.
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Porous anodic aluminum oxide scaffolds; formation mechanisms and applications
Nanoporous anodic aluminium oxide (AAO) can be created with pores that self-assemble into ordered configurations. Nanostructured metal oxides have proven to be very useful as scaffolds for growth of nanowires and nanotubes with tunable diameters and with tight diameter distributions. For 50 years, …
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Wear studies of single aluminum oxide grains during grinding
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1955
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Rare-earth doped aluminum oxide lasers for silicon photonics
… rare-earth metals as dopants. By co-sputtering aluminum and erbium targets, Er3+ dopants at concentrations on the order of 1.0x1020 cm-3 have been added to the Al2O3 host medium. Resulting Er3+:Al2O3 films have been characterized, and over 3 dB/cm absorption has been measured over a 20 nm …
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Microfiltration of Synthetic Metal Working Fluids Using Aluminum Oxide Membranes
The design of membrane filtration systems is also influenced by the rate of contaminant build-up in the MWF. Microbiological population growth can grow to potentially hazardous levels in extremely short time-scales. Membrane filtration systems designed to control microbial populations must remove …
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Radiative heat transfer from aluminum oxide in solid propellant flames
… propellant flames was determined. Liquid aluminum oxide (Al$\sb2$O$\sb3$) particles, produced from the distributed combustion of aluminum droplets, dominated the optical characteristics of aluminized propellant flames. A laser scattering and extinction technique was developed to determine …
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Aluminum/aluminum oxide structured microplasma devices: Paschen's Law and applications
Aluminum/aluminum oxide microplasma novel devices can be fabricated by sequences of inexpensive wet electrochemical processes and provide an attractive tool to study plasma physics by modifying the device geometry as desired. A wet electrochemical process, used for fabricating microscale cavities …
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The importance of aluminum oxide aerosols to stratospheric ozone depletion
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1996.
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Synthesis and Characterization of Nanostructures in Porous Anodic Aluminum Oxide Templates
… of pore structure and magnetic component. Iron oxide nanotubes with a unique inner-surface were also fabricated by an electrodeposition method. β-FeOOH nanotubes were grown in alumina templates and transformed into hematite and magnetite structures during various heating processes. Hematite …
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The Enhancement of Convective Heat Transfer in an Aluminum Oxide Nanoaerosol
… assess the effects of suspended 112 nm diameter aluminum oxide (Al2O3) nanoparticles in air on the rate of convective heat transfer. The particle mass loading was varied over a range of flow Reynolds number. The results indicate up to a 36% increase in Nusselt number for a particle mass loading …
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Deposition of aluminum oxide by evaporative coating at atmospheric pressure (ECAP)
Aluminum oxide is one of the most important ceramic oxides and has a wide range of uses, including high-temperature applications and microelectronics. Recently, the Center for Plasma-Material Interaction (CPMI) has developed innovative coating method of Evaporative Coating at Atmospheric Pressure …
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Broadband, millimeter-wave antireflection coatings for cryogenic sintered aluminum oxide optics
"For more than fifty years, observations of the cosmic microwave background (CMB) have provided fundamental insights into the universe we inhabit. Through a combination of ground-based and balloon- and satellite-borne experiments, we have measured the CMB's temperature anisotropy and power spectrum …
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Metal-Aluminum Oxide Interactions: Effects of Surface Hydroxylation and High Electric Field
Metal and oxide interactions are of broad scientific and technological interest in areas such as heterogeneous catalysis, microelectronics, composite materials, and corrosion. In the real world, such interactions are often complicated by the presence of interfacial impurities and/or high electric …
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Fouling of Aluminum Oxide Microfiltration Membranes by Semi-Synthetic Metal Working Fluids
The modeled membrane fouling mechanisms were validated through the reformulation of a semi-synthetic MWF designed to have greater microemulsion stability. It was experimentally verified that the new fluid did not see significant aggregation. Accordingly this fluid did not show evidence of …
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