Speaker: Prof. Gönül Turhan-Sayan, Middle East Technical University

Topic: "Metamaterial Research with Applications in Microwave, Terahertz and Infrared Bands"

Location: Middle East Technical University, Ankara, Turkey

Abstract: Metamaterials (MTMs) are specially engineered periodical resonant structures, which are composed of conductors and dielectrics commonly found in nature, but possess quite unusual characteristics not displayed by natural materials, such as negative or almost zero permittivity and/or permeability. The possibility of metamaterials and their basic design principles were introduced 50 years ago by the Russian scientist, V.G. Veselago, in his 1968 paper. After a silent period of about 30 years, the research on the theory and applications of metamaterials became very popular in physics, electrical engineering and material science with a huge number of publications exceeding 10.000 papers annually.  Magnetically and/or electrically excited metamaterial unit cell arrays were firstly demonstrated in microwave frequencies, in early 2000’s. Then, the MTM research studies have been extended to Terahertz (THz) and infrared (IR) bands over the last decade. Since 2007, I have been doing research at METU with my graduate students on the design and applications of metamaterials, having completed 3 Master Theses and 3 PhD Theses so far, resulting in 15 journal papers and more than 30 conference papers.  In my presentation, I will summarize our results in metamaterial research reporting multi- frequency or wideband MTM structures, including adjustable or reconfigurable topologies, with various applications ranging from resonators, filters, antennas and absorbers to sensors  in RF, THz and IR bands.

Bio: Dr. Gönül Turhan-Sayan received her B.S. and M.S. degrees from the Middle East Technical University (METU), Ankara, Turkey, and her Ph.D. degree from the Ohio State University (OSU), Columbus, Ohio, USA, all in electrical engineering. During her PhD studies, she was a Fulbright Scholar from 1983 to 1984. Then, she worked for the ElectroScience Laboratory at OSU as a graduate research associate from 1984 to 1988. Dr. Turhan-Sayan was a consultant and subcontractor for the Electromagnetics and Optics Divisions of the Battelle Memorial Institute, Columbus, Ohio, USA from 1988 to 1992. She joined METU in 1992 as an assistant professor and became a full professor in 2003. She served as the Chairperson of the Department of Electrical and Electronics Engineering from 2013 to 2016, and as the Vice President of METU from 2016 to August, 2017. Her professional interests include transient electromagnetics; target detection and physics-based identification techniques for ultra-wideband (UWB) radar systems; mine and IED (Improvised Explosive Devices) detection by GPRs; UWB radar signal processing; design and applications of metamaterials in microwave, Terahertz and infrared bands; distributed fiber optical sensors and optical surface plasmon resonance sensors. Dr. Turhan-Sayan is a senior member of IEEE since 2004.

  Date and Time




  • Ankara, Ankara
  • Turkey

  • Co-sponsored by URSI-TR


Prof. Gönül Turhan-Sayan


Metamaterial Research with Applications in Microwave, Terahertz and Infrared Bands