BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:US/Eastern BEGIN:DAYLIGHT DTSTART:20220313T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20221106T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220324T150107Z UID:B946C68C-AE43-4318-888D-F40C52F899B6 DTSTART;TZID=US/Eastern:20220317T133000 DTEND;TZID=US/Eastern:20220317T150000 DESCRIPTION:https://mtt.org/profile/anthony-grbic/\n\nThe research area of metamaterials has captured the imagination of scientists and engineers ove r the past two decades by allowing unprecedented control of electromagneti c fields. The extreme manipulation of fields has been made possible by the fine spatial control and wide range of material properties that can be at tained through subwavelength structuring. Research in this area has result ed in devices which overcome the diffraction limit\, render objects invisi ble\, and even break time reversal symmetry. It has also led to flattened and conformal optical systems and ultra-thin antennas. This seminar will i dentify recent advances in the growing area of metamaterials\, with a focu s on metasurfaces: two dimensional metamaterials. The talk will explain wh at they are\, the promise they hold\, and how these field-transforming sur faces are forcing the rethinking of electromagnetic/optical design.\n\nEle ctromagnetic metasurfaces are finely patterned surfaces whose intricate pa tterns/textures dictate their electromagnetic properties. Conventional fie ld-shaping devices\, such as lenses in prescription eye glasses or a magni fying glass\, require thickness (propagation length) to manipulate electro magnetic waves through interference. In contrast\, metasurfaces manipulate electromagnetic waves across negligible thicknesses through surface inter actions\, by impressing abrupt phase and amplitude discontinuities onto a wavefront. The role of the visible (propagating) and invisible (evanescent ) spectrum in establishing these discontinuities will be explained. In add ition\, it will be shown how metasurfaces allow the complete transformatio n of fields across a boundary\, and how this unique property is driving a new generation of ultra-compact electromagnetic and optical devices with u nparalleled field control. Metasurfaces will be described that exhibit var ious field tailoring capabilities including multiwavelength and multifunct ional performances and extreme field shaping. In addition\, metasurfaces w ith multi-input to multi-output capabilities will be presented that open n ew opportunities in adaptive and trainable designs.\n\nCo-sponsored by: Yu chen Cao\n\nSpeaker(s): Anthony Grbic\, \n\nOrlando\, Florida\, United Sta tes\, Virtual: https://events.vtools.ieee.org/m/307166 LOCATION:Orlando\, Florida\, United States\, Virtual: https://events.vtools .ieee.org/m/307166 ORGANIZER:yuchencao@knights.ucf.edu SEQUENCE:5 SUMMARY:Extreme Field Control with Electromagnetic Metasurfaces URL;VALUE=URI:https://events.vtools.ieee.org/m/307166 X-ALT-DESC:Description: <br /><p><a href="https://mtt.org/profile/anthony-g rbic/">https://mtt.org/profile/anthony-grbic/</a></p>\n<p>The research are a of metamaterials has captured the imagination of scientists and engineer s over the past two decades by allowing unprecedented control of electroma gnetic fields. The extreme manipulation of fields has been made possible b y the fine spatial control and wide range of material properties that can be attained through subwavelength structuring. &nbsp\; Research in this ar ea has resulted in devices which overcome the diffraction limit\, render o bjects invisible\, and even break time reversal symmetry. It has also led to flattened and conformal optical systems and ultra-thin antennas. &nbsp\ ;This seminar will identify recent advances in the growing area of metamat erials\, with a focus on metasurfaces: two dimensional metamaterials. The talk will explain what they are\, the promise they hold\, and how these fi eld-transforming surfaces are forcing the rethinking of electromagnetic/op tical design.</p>\n<p>Electromagnetic metasurfaces are finely patterned su rfaces whose intricate patterns/textures dictate their electromagnetic pro perties. Conventional field-shaping devices\, such as lenses in prescripti on eye glasses or a magnifying glass\, require thickness (propagation leng th) to manipulate electromagnetic waves through interference. In contrast\ , metasurfaces manipulate electromagnetic waves across negligible thicknes ses through surface interactions\, by impressing abrupt phase and amplitud e discontinuities onto a wavefront. The role of the visible (propagating) and invisible (evanescent) spectrum in establishing these discontinuities will be explained. In addition\, it will be shown how metasurfaces allow t he complete transformation of fields across a boundary\, and how this uniq ue property is driving a new generation of ultra-compact electromagnetic a nd optical devices with unparalleled field control. &nbsp\;Metasurfaces wi ll be described that exhibit various field tailoring capabilities includin g multiwavelength and multifunctional performances and extreme field shapi ng. In addition\, metasurfaces with multi-input to multi-output capabiliti es will be presented that open new opportunities in adaptive and trainable designs.</p> END:VEVENT END:VCALENDAR