Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"shadow mask"”.
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Shadow mask assisted heteroepitaxy of compound semiconductor nanostructures
Shadow Mask assisted Molecular Beam Epitaxy (SMMBE) is a technique enabling selected area epitaxy of semiconductor heterostructures through shadow masks. The objective of this work was the development of the SMMBE technique for the reliable fabrication of compound semiconductor nanostructures of …
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An analytic model to predict detection threshold and performance data for misconvergence on a shadow-mask CRT
… the expected luminance distribution through the shadow mask structure on a color CRT display system. The model incorporates functions to describe the unique features of a color CRT, that is, the discrete sampling imposed by the shadow mask/ phosphor-dot arrangement as well as the electron beam …
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Effects of color CRT misconvergence, target size, and nontarget density on visual search performance
… misconvergence among the primary colors of a shadow-mask CRT is a principle human factors concern for applications of this technology. The major objectives of this research were: (1) to determine the effect of misconvergence on visual search performance (i.e., search time and error), (2) to …
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Effects of color CRT misconvergence and font type on text readability and subjective preference
… Misconvergence of the primary colors of a shadow-mask CRT is a problem with this technology that deserves human factors engineering consideration. The purpose of this research was as follows: (1) to determine the effects of misconvergence type and amount and font type on reading performance …
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A study of surface roughness issues in magnetic tunnel junctions
… tunnel junction elements are fabricated by using shadow mask technique. Experimental results show that the barrier properties and the performance of the magnetic tunnel junction elements depend on the microstructure of tunnel barrier.
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Elimination of PZT thin film breakage caused by electric current arcing and intrinsic differential strains during poling
… experimentally reduced by 70% by redesigning the shadow mask used during sputtering to eliminate any metal overspray.
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XPS and transport studies of oxide barriers in tunnel magnetoresistance junctions
… not on the rougher polycrystalline Co layers. Shadow mask deposited and microstructured junctions were fabricated and their tunneling characteristics studied. Of special interest were the bias dependence and temperature dependence of the tunnel conductance and the TMR ratio. These were analyzed …
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Performance measures and subjective evaluations for two color displays
… technologies, the standard cathode ray tube shadow mask (CRT) display and the newer liquid crystal/cathode ray tube (LC/CRT) display. Six subjects performed three different information processing tasks using each of the two color display technologies and expressed their display preference via …
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Effects of color CRT misconvergence and display luminance on reading performance and perceived image quality judgments
… performed a Tinker Speed of Reading Test on a shadow-mask, color CRT computer workstation. Both search time to find the out-of-context word and errors were recorded. Following the reading task, each participant rated the image quality of the display using a 9-point subjective scale. Reading …
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Magnetoelectric Coupling in BaTiO3-BiFeO3 Multilayers: Growth Optimization and Characterization
… in the ferroelectric properties by introducing a shadow mask in the PLD process. We measured the highest αME-value so far of 480 Vcm-1Oe-1 for a multilayer with a double-layer thickness of only 4.6 nm, two orders of magnitude larger than the coefficient of 4 Vcm-1Oe-1 measured for BFO …
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Charge dynamics in superconducting double dots
… both islands. These devices are fabricated using shadow mask evaporation, and are measured at sub Kelvin temperatures using a dilution refrigerator. We use radio frequency reflectometry to measure quantum capacitance, which is dependent on the quantum state of the device. We measure the quantum …
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Infrared photoconductive PbTe film processing and oxygen sensitization
… high vacuum on the order of 1 0-6 Torr. Physical shadow-mask and photolithographic techniques were used to pattern the films in order to produce photoconductive samples with varied film and electrical contact geometries. The introduction of non-functional "dummy layers" within 100-300 pm of the …
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UV-Induced Intrinsic Fabry-Perot Interferometric Fiber Sensors and Their Multiplexing for Quasi-Distributed Temperature and Strain Sensing
… system based on a pulsed excimer laser and a shadow mask is developed. A spectrum-based measurement system is presented to measure the interference fringes of IFPI sensors. A swept coherent light source is used as the light source. The spectral responses of the IFPI sensors at different …
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Herstellung und Charakterisierung von Nanostrukturen auf der Basis von II-VI-Materialien mittels der Schattenmaskentechnologie
Warum eigentlich Schattenmasken als neues alternatives Verfahren zur lateralen Strukturierung? Alle bislang üblichen Verfahren zur Herstellung lateral begrenzter Halbleiter-Kristalle strukturieren die zuvor epitaktisch flächig aufgewachsenen Schichten nachträglich. Hierdurch können Probleme …
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Dünnschichtsysteme für den Einsatz in magnetischen Tunnelstrukturen
… UV lamp) reproducible MTJs can be prepared by a shadow mask deposition process. TMR values of 33% at low temperature and 15% at room temperature are determined. But the oxidation times are found to be too long for any industrial application using this method. With high power UV light (100W …
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Synthesis and Combinatorial Optimization of Novel Star-Shaped Resist Materials for Lithographic Applications
… was realized by a special designed shadow mask. For the last processing step development a preliminary screening of the dissolubility conditions of the resist film was established utilizing quartz crystal microbalances. Based on this measured dissolubility behavior the time frame was …