BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Turkey BEGIN:DAYLIGHT DTSTART:20380119T061407 TZOFFSETFROM:+0300 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=3TU;BYMONTH=1 TZNAME:+03 END:DAYLIGHT BEGIN:STANDARD DTSTART:20160907T000000 TZOFFSETFROM:+0300 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=1WE;BYMONTH=9 TZNAME:+03 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20180503T000000Z UID:3E66CB7F-14A9-4C3E-81FA-A1BB2B22B47B DTSTART;TZID=Turkey:20180302T133000 DTEND;TZID=Turkey:20180302T153000 DESCRIPTION:Speaker: Assoc. Prof. Özlem Özgün\, Hacettepe University\n\n Topic: "The Magic World of Transformation Electromagnetics: Invisibility a nd Beyond"\n\nLocation: Middle East Technical University\, Ankara\, Turkey \n\nAbstract: In recent years\, the concept of Transformation Electromagne tics (TEM) (or Transformation Optics) has attracted a considerable interes t because it led to the design of a wide variety of electromagnetic and op tical devices\, such as invisibility cloak\, reshapers\, concentrators\, r otators\, RCS reduction of radar targets\, flat lenses\, miniaturization o f antennas and microwave devices\, etc. TEM is an intuitive approach for d esigning application-oriented transformation media that can flexibly tune electromagnetic waves in a desired manner by using the form invariance pro perty of Maxwell’s equations under coordinate transformations. The theor etical foundations of TEM are on very firm foundation\, and they have neve r been challenged. However\, the physical realization of such transformati on media poses challenges because of spatial variations of the material sp ecifications. There are some promising studies in the literature related t o the practical realization of such materials\, thanks to the advancements in the metamaterial technology. Without dealing with the physical impleme ntation of such materials\, the reshaping approach\, which have developed in 2007 just after the introduction of invisibility cloak in 2006\, inspir ed us to utilize TEM to circumvent certain computational difficulties aris ing in the numerical solution of complex electromagnetic problems. Therefo re\, we named such materials as software metamaterials\, and employed them in the numerical solution of multi-scale electromagnetic problems\, rough surface scattering and optimization problems in the context of finite ele ment and finite difference time domain methods. In this talk\, first the f undamentals of TEM will be reviewed to understand the basic physics behind it. Afterwards\, an overview of the past and present applications of this approach will be presented.\n\nBio: Dr. Özlem Özgün received her B.Sc. and M.Sc. degrees from Bilkent University\, Ankara\, Turkey in 1998 and 2 000\, respectively\, and her Ph.D. degree from Middle East Technical Unive rsity (METU)\, Ankara\, Turkey in 2007\, all in electrical and electronics engineering. She worked at Bilkent University as a teaching assistant dur ing 1998-2000\; at TÜBİTAK-İltaren during 2000-2004\; at ASELSAN during 2004-2005\; at Electromagnetic Communication Lab\, Penn State University\ , USA as a postdoctoral researcher during 2007-2008\; at METU Northern Cyp rus Campus as an assistant professor during 2008-2012\; and at TED Univers ity as an associate professor during 2012-2015. Currently\, she is an asso ciate professor in the electrical and electronics engineering department o f Hacettepe University. Dr. Özgün’s research interests include computa tional electromagnetics\, finite element method\, domain decomposition met hods\, transformation electromagnetics\, electromagnetic scattering\, stoc hastic electromagnetic problems and optimization techniques. She has publi shed over 100 refereed journal papers\, book\, book chapters\, and confere nce articles. She received METU best Ph.D. thesis award in 2007\, and the award for excellence in electromagnetics bestowed by Prof. Felsen Fund in 2009. She is a senior member of IEEE\, and the secretary of the steering c ommittee of URSI Turkey.\n\nSpeaker(s): Assoc. Prof. Ozlem Ozgun\, \n\nAnk ara\, Ankara\, Türkiye LOCATION:Ankara\, Ankara\, Türkiye ORGANIZER:ozergul@metu.edu.tr SEQUENCE:0 SUMMARY:IEEE AP/MTT/EMC/ED TURKEY CHAPTER SEMINAR SERIES -- SEMINAR 25 URL;VALUE=URI:https://events.vtools.ieee.org/m/169621 X-ALT-DESC:Description: <br /><p>Speaker: Assoc. Prof. &Ouml\;zlem &Ouml\;z g&uuml\;n\, Hacettepe University</p>\n<p>Topic: "The Magic World of Transf ormation Electromagnetics: Invisibility and Beyond"</p>\n<p>Location:&nbsp \;Middle East Technical University\, Ankara\, Turkey</p>\n<p>Abstract:&nbs p\; In recent years\, the concept of Transformation Electromagnetics (TEM) (or Transformation Optics) has attracted a considerable interest because it led to the design of a wide variety of electromagnetic and optical devi ces\, such as invisibility cloak\, reshapers\, concentrators\, rotators\, RCS reduction of radar targets\, flat lenses\, miniaturization of antennas and microwave devices\, etc. TEM is an intuitive approach for designing a pplication-oriented transformation media that can flexibly tune electromag netic waves in a desired manner by using the form invariance property of M axwell&rsquo\;s equations under coordinate transformations. The theoretica l foundations of TEM are on very firm foundation\, and they have never bee n challenged. However\, the physical realization of such transformation me dia poses challenges because of spatial variations of the material specifi cations. There are some promising studies in the literature related to the practical realization of such materials\, thanks to the advancements in t he metamaterial technology. Without dealing with the physical implementati on of such materials\, the reshaping approach\, which have developed in 20 07 just after the introduction of invisibility cloak in 2006\, inspired us to utilize TEM to circumvent certain computational difficulties arising i n the numerical solution of complex electromagnetic problems. Therefore\, we named such materials as software metamaterials\, and employed them in t he numerical solution of multi-scale electromagnetic problems\, rough surf ace scattering and optimization problems in the context of finite element and finite difference time domain methods. In this talk\, first the fundam entals of TEM will be reviewed to understand the basic physics behind it. Afterwards\, an overview of the past and present applications of this appr oach will be presented.</p>\n<p>Bio:&nbsp\; Dr. &Ouml\;zlem &Ouml\;zg&uuml \;n received her B.Sc. and M.Sc. degrees from Bilkent University\, Ankara\ , Turkey in 1998 and 2000\, respectively\, and her Ph.D. degree from Middl e East Technical University (METU)\, Ankara\, Turkey in 2007\, all in elec trical and electronics engineering. She worked at Bilkent University as a teaching assistant during 1998-2000\; at T&Uuml\;BİTAK-İltaren during 20 00-2004\; at ASELSAN during 2004-2005\; at Electromagnetic Communication L ab\, Penn State University\, USA as a postdoctoral researcher during 2007- 2008\; at METU Northern Cyprus Campus as an assistant professor during 200 8-2012\; and at TED University as an associate professor during 2012-2015. Currently\, she is an associate professor in the electrical and electroni cs engineering department of Hacettepe University. Dr. &Ouml\;zg&uuml\;n&r squo\;s research interests include computational electromagnetics\, finite element method\, domain decomposition methods\, transformation electromag netics\, electromagnetic scattering\, stochastic electromagnetic problems and optimization techniques. She has published over 100 refereed journal p apers\, book\, book chapters\, and conference articles. She received METU best Ph.D. thesis award in 2007\, and the award for excellence in electrom agnetics bestowed by Prof. Felsen Fund in 2009. She is a senior member of IEEE\, and the secretary of the steering committee of URSI Turkey.</p> END:VEVENT END:VCALENDAR