G. Kızıltaş, "Design and Fabrication of Artificially Engineered..."
Faculty of Engineering and Natural Sciences
FENS SEMINARS
“Design And Fabrication Of Artificially Engineered Material Composites For Electromagnetic Systems”
Dr. Güllü Kızıltaş
Abstract: While the number of advanced devices designed for the wireless communication industry increases, their sophistication in terms of technology, level of integration, and miniaturization increases as well. Concurrently, cost, size, and performance expectations become more and more stringent, necessitating advanced system architectures, “new” materials and versatile design optimization procedures. The capability to manipulate the distribution of properties within the dielectric materials in an automated way is critical to enable dramatic improvements in antenna performance, and to overcome traditional design trade-offs between efficiency, bandwidth, and miniaturization. These concepts have not been addressed earlier in the electromagnetic (EM) community due to a plethora of barriers that have made these concepts unfeasible in the past. In this research, the challenges of designing and fabricating new antenna substrates are addressed from an interdisciplinary engineering perspective, with a focus on using automated design tools (such as topology optimization) and artificially engineered composite materials. Specifically, a design framework was developed using the concepts of topology optimization, rigorous analysis models, high-contrast dielectric materials and sophisticated millimeter-and micro-scale fabrication of ceramics, polymers, and other materials to create “novel” EM devices. This allowed us to develop full three-dimensional volumetric material textures and printed conductor topologies to enhance the performance of various RF components such as filters and patch antennas. Design and fabrication technologies, presented in this research, based on basic capabilities of using engineered materials and systems, when applied correctly, will dramatically shift the face of multidisciplinary engineering design.
Biography: Dr. Gullu KIZILTAS completed her B. S. and M. S. degrees in Mechanical Engineering at the Middle East Technical University, Ankara, Turkey, in 1995 and 1998, respectively. She was awarded a Doctoral Fellowship by the Mechanical Engineering Department at the University of Michigan in September 1998, and joined the Computational Mechanics Laboratory and a year later also the Radiation Laboratory at EECS. In May 2003, she completed her PhD degree. She worked as a Post Doctoral Researcher at both the ElectroScience Laboratory at Ohio State University and the University of Michigan until September 2005. She is currently Assistant Professor at the Faculty of Engineering and Natural Sciences at Sabanci University, Turkey. Her current research interests are design and fabrication of complex engineering systems such as miniaturized mechanical, electromechanical and biomedical devices.
Nov. 16, 2005, 13:40, FENS L056