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:20170430T113521Z UID:F3A75B20-E5B6-11E7-833E-0050568D7F66 DTSTART;TZID=Turkey:20170428T133000 DTEND;TZID=Turkey:20170428T153000 DESCRIPTION:Speaker: Prof. İrşadi Aksun\, Koç University (Co-Author: H. Serhat Tetikol)\n\nTopic: "Understanding Surface Plasmon Polaritons (SPP) via Critical Study of Dispersion Relation – Complete Picture and Correct Interpretation"\n\nLocation: Middle East Technical University\, Ankara\, Turkey\n\nAbstract: Dispersion relation for surface plasmon polaritons (SP Ps) is a fundamental equation that has long been known. A common misconcep tion in its solution is that either a complex frequency or a complex wave- vector can be used to account for losses in the system. We show that both frequency and wave-vector should simultaneously take complex values in ord er to fully account for the underlying physics represented by the dispersi on relation\, resulting in Dispersion Surface. Realizing that the dispersi on surface is in fact a manifestation of a richly embroidered set of dispe rsion lines\, which may be accessible by carefully selecting source and ma terial properties\, our results pave the way for the possibility of unprec edented engineering of resolution\, confinement\, group velocity and band- gap in structures supporting SPPs. Our results are also applicable to a la rger class of waves in dispersive environments\, and pose a major amendmen t to the conventional interpretation of dispersion.\n\nBio: M. İrşadi Ak sun\, professor of electrical and electronics engineering\, is the vice pr esident for research and development at Koç University. Dr. Aksun receive d his B.S and M.S degrees in Electrical and Electronics Engineering from M iddle East Technical University\, Turkey\, and his Ph.D degree in Electric al and Computer Engineering from University of Illinois at Urbana-Champaig n\, U.S.A.\, in 1990. His research interests are: Computational EM and Opt ics\, Antennas and Propagation\, Nanophotonics. After completing postdocto ral training at University of Illinois at Urbana-Champaign\, he joined the faculty of Electrical and Electronics Engineering at Bilkent University\, and worked there until 2001. Then\, he joined Koç University in 2001\, s erved as Dean of Faculty of Engineering between 2004-2009\, and has been s erving in the capacity of Vice President for Research and Development sinc e September 1\, 2009. He has received “TÜBİTAK Incentive Award” in 1 994\, “The Best Professor Award” given annually by Bilkent students in 2001\, “TÜBİTAK Science Award” in 2007\, and become a principle mem ber of Turkish Academy of Sciences in 2012.\n\nSpeaker(s): Prof. Irsadi Ak sun\, \n\nAnkara\, Istanbul\, Türkiye LOCATION:Ankara\, Istanbul\, Türkiye ORGANIZER:ozergul@metu.edu.tr SEQUENCE:0 SUMMARY:[Legacy Report] IEEE AP/MTT/EMC/ED TURKEY CHAPTER SEMINAR SERIES -- SEMINAR 8 URL;VALUE=URI:https://events.vtools.ieee.org/m/148542 X-ALT-DESC:Description: <br /><p>Speaker: Prof. İrşadi Aksun\,&nbsp\;Ko&c cedil\; University (Co-Author: H. Serhat Tetikol)</p>\n<p>Topic: "Understa nding Surface Plasmon Polaritons (SPP) via Critical Study of Dispersion Re lation &ndash\; Complete Picture and Correct Interpretation"</p>\n<p>Locat ion: Middle East Technical University\, Ankara\, Turkey</p>\n<p><em>Abstra ct:&nbsp\;Dispersion relation for surface plasmon polaritons (SPPs) is a f undamental equation that has long been known. A common misconception in it s solution is that either a complex frequency or a complex wave-vector can be used to account for losses in the system. We show that both frequency and wave-vector should simultaneously take complex values in order to full y account for the underlying physics represented by the dispersion relatio n\, resulting in Dispersion Surface. Realizing that the dispersion surface is in fact a manifestation of a richly embroidered set of dispersion line s\, which may be accessible by carefully selecting source and material pro perties\, our results pave the way for the possibility of unprecedented en gineering of resolution\, confinement\, group velocity and band-gap in str uctures supporting SPPs. Our results are also applicable to a larger class of waves in dispersive environments\, and pose a major amendment to the c onventional interpretation of dispersion.&nbsp\;</em></p>\n<p><em>Bio:&nbs p\;M. İrşadi Aksun\, professor of electrical and electronics engineering \, is the vice president for research and development at Ko&ccedil\; Unive rsity. Dr. Aksun received his B.S and M.S degrees in Electrical and Electr onics Engineering from Middle East Technical University\, Turkey\, and his Ph.D degree in Electrical and Computer Engineering from University of Ill inois at Urbana-Champaign\, U.S.A.\, in 1990. His research interests are: Computational EM and Optics\, Antennas and Propagation\, Nanophotonics. Af ter completing postdoctoral training at University of Illinois at Urbana-C hampaign\, he joined the faculty of Electrical and Electronics Engineering at Bilkent University\, and worked there until 2001. Then\, he joined Ko& ccedil\; University in 2001\, served as Dean of Faculty of Engineering bet ween 2004-2009\, and has been serving in the capacity of Vice President fo r Research and Development since September 1\, 2009. He has received &ldqu o\;T&Uuml\;BİTAK Incentive Award&rdquo\; in 1994\, &ldquo\;The Best Profe ssor Award&rdquo\; given annually by Bilkent students in 2001\, &ldquo\;T& Uuml\;BİTAK Science Award&rdquo\; in 2007\, and become a principle member of Turkish Academy of Sciences in 2012.</em></p> END:VEVENT END:VCALENDAR