Aris Christou

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While use of LEDs in fiber optics and lighting applications is common, their use in medical diagnostic applications is not very extensive. Since the precise value of light intensity will be used to interpret patient results, understanding failure modes [1-4] is very important. We used the Failure Modes and Effects Criticality Analysis (FMECA) tool to(More)
The modeling of dependent failures, specifically Common Cause Failures (CCFs), is one of the most important topics in Probabilistic Risk Analysis (PRA). Currently, CCFs are treated using parametric modeling, which is based on historical failure events. Instead of utilizing the existing data-driven approach, this paper proposes the concept of physics-based(More)
Title of Dissertation: INVESTIGATION OF RELIABILITY IN GALLIUM NITRIDE HIGH ELECTRON MOBILITY TRANSISTORS USING EQUIVALENT CIRCUIT MODELS FOR USE IN HIGH POWER, HIGH FREQUENCY MICROWAVE AMPLIFIERS Benjamin D. Huebschman, Doctor of Philosophy, 2010 Dissertation Directed By: Professor Neil Goldsman Department of Electrical and Computer Engineering Gallium(More)
While use of LEDs in fiber optics and lighting applications is common, their use in medical diagnostic applications is very rare. Since the precise value of light intensity will be used to interpret patient results, understanding failure modes is very important. We used the Failure Modes and Effects Criticality Analysis (FMECA) tool to identify the critical(More)
Title of Document: SOME MECHANICS CHALLENGES AND SOLUTIONS IN FLEXIBLE ELECTRONICS Matthew Brody Tucker, Master of Science, University of Maryland, 2009 Directed By: Prof. Teng Li, Department of Mechanical Engineering, University of Maryland Flexible electronics is an emerging field with potential applications such as large area flexible displays, thin film(More)
Abstract A Monte Carlo simulation is reported for analog integrated circuits and is based on the modification of the failure rate of each component due to interaction effects of the failed components. The Monte Carlo technique is the methodology used to treat such circuits, since they are independent of the number of components and the degree of system(More)
  • TUNNELING DIODES, INFRARED RECTENNA, +5 authors Aris Christou
  • 2011
Title of dissertation: NOVEL TUNNELING DIODES FOR A HIGH PERFORMANCE INFRARED RECTENNA Kwangsik Choi Doctor of Philosophy, 2011 Dissertation directed by: Prof. Martin Peckerar Department of Electrical and Computer Engineering Since the 1960s, metal-insulator-metal (MIM) tunneling diodes have been used for detecting and mixing electromagnetic waves up to(More)
Summary form only given. Integrated-circuit devices using the Al-Cu bond pad systems may be subjected to failure mechanisms based on electrolytic corrosion. The migratory copper resistive short (MCRS) failure mode is one example of this mechanism and results in the formation of filamentary or dendritic deposits of copper between adjacent bond pads on the IC(More)
The nanoparticle technologies consisting of multiple layers of mixtures of activated carbon and ruthenium (IV) oxide for super capacitors are reported. The mono-particulate layer process described here is a modified Langmuir-Blodgett trough. We report the processes for a spray-coated zinc nanopowder electrode used as a counter-electrode forming a galvanic(More)