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 20 of 1509 for “"contacts"”.
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Sparking at Relay Contacts
University of Minnesota Masters thesis. June 1920. Major: Electrical Engineering. Advisor: Mr. E. E. Clark. 1 computer file (PDF); 109 pages.
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Mechanotransduction at cell-cell contacts
For nearly 40 years, it was debated as to whether the differences in cadherin- dependent cell-cell adhesion energies could solely predict cell sorting. Although adhesion energies do influence cell sorting in vitro, recent studies suggested that that differences in cell adhesion, determined mainly …
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Passive harmonic generation at spring contacts
… found to be much superior to the stainless-steel contacts. It is also found that the passive nonlinearity at the spring contact is the semiconductor-like junction formed by the surface oxide film.</p><p>In the second paper, we show that the maximum E-field coupling occurs at a location slightly …
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FCS for superconducting quantum point contacts
… thesis the FCS for superconducting quantum point contacts have been calculated. Such quantum point contacts frequently occur in modern microelectronic devices, which exploit the special features of superconductors. The FCS for normal metal-superconductor and superconductor-superconductor contacts …
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Mansion: Inner Cosmologies, Thresholds, and Contacts
This dissertation is in two parts. The first is the dissertation essay, which features an analysis of the work Mansion, and the second is the score to the Mansion Cycle, written for the International Contemporary Ensemble between 2009 and 2011. The score is included as an appendix, and consists of …
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Foster children's contacts with own family
Thesis (M.S.)--Boston University
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Metal-aluminium gallium nitride Schottky contacts formation.
X-ray photoelectron spectroscopy (XPS) has been used to investigate the effect of various surface cleaning procedures on Al[x]Ga[1]-[x]N surfaces for x = 0.20 and 0.30. Results show that wet chemical etch in a HF solution followed by a 600°C in-situ annealing under ultra-high vacuum (UHV) is …
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An investigation of contacts and contact endurance
Thesis--Michigan Agricultural College, 1924
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Predicting protein residue-residue contacts and disorder
… and PROPcon, are used to predict residue-residue contacts and the other, DNdisorder, predicts the order/disorder state of a residue. This predicted information can be used directly by protein structure prediction pipelines to better navigate the complex and large protein conformation search space …
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Shot noise of atomic and molecular contacts
Diese Arbeit untersucht den ballistischen Elektronen-Transport in verschiedenen atomaren sowie molekularen Systemen unter der Verwendung der Rastertunnelmikroskopie und der Messung elektrischen Rauschens. Das Letztere wird genutzt, um Informationen über die Anzahl, die Transmission und die …
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Transient Analysis of Isothermal Elastohydrodynamic Point Contacts
… elastohydrodynamic lubrication (EHL) of point contacts under transient conditions. Transient lubrication is particularly concerned with the effect of squeeze film motion on the lubricant film thickness and pressure distribution. There has been a dearth of investigation to determine the effect …
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Zirconium nitride contacts for cadmium telluride solar cells
… conductive metals, which would permit thin back contacts. Annealing at temperature up to 270°C for 30 minutes did not affect the structure or properties of the ZrN. The effect of the thickness of the ZrN films on their back contact performance was studied. As the thickness of the ZrN films …
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Efficient algorithm for selecting protein residue-residue contacts
… the correlation allows us to predict the contacts from multiple sequence alignments. The predicted contacts can then be used as spatial constraints and offer guidance in protein structure prediction. The constraints can be used as inputs to a protein structure prediction algorithm to …
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Nano-scale ohmic contacts for III-V MOSFETs
… is necessary to fabricate source and drain ohmic contacts with ultra-low contact resistance, perhaps as low as 50 [Omega] · [mu]m. This is particularly difficult to achieve as the device size shrinks down to the 10-20 nm length range since the contact resistance increases drastically for small …
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The onset of gouging in high-speed sliding contacts
Hypervelocity gouging occurs in high speed sliding systems such as rocket sled test tracks, light gas guns, and railguns. Gouging takes the form of teardrop-shaped craters on the rail surface, and usually only occurs above a threshold speed which is dependent on the slider and rail material …
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Electronic and Spin Correlations in Asymmetric Quantum Point Contacts
<p>A quantum point contact (QPC) is a quasi-one dimensional electron system, for which the conductance is quantized in unit of $2e^2/h$. This conductance quantization can be explained in a simple single particle picture, where the electron density of states cancels the electron velocity to a …
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Numerical Simulation of Contacts Working Under Mixed Lubricating Conditions
… simulating the fluid flow around asperity contacts without considering the contact mechanics or the tribofilms forming between asperities The Reynolds equation (RE) is the fundamental equation used to model fluid film lubrication. However, in the ML regime, where both BL and HL coexist, the …
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Scuffing of Aluminum/steel Contacts Under Dry Sliding Conditions
Based on the experimental observations and the scuffing models a new hypothesis for scuffing is proposed. According to this hypothesis, scuffing involves initiation of cracks due to subsurface plastic deformation, propagation of these cracks leading to the removal of the existing protective surface …
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Ohmic Contacts to N -Type Gallium Nitride Based Semiconductors
… of electrical and materials performance of ohmic contacts are presented. Surface treatment techniques were developed to improve the electrical characteristics of ohmic contacts. Ti/Al/Mo/Au metallization scheme was developed to form ohmic contacts to n-GaN, n-AlxGa1-xN, and AlGaN/GaN HEMTs. …
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