Extreme Metamaterials

#metamaterials #electromagnetics #propagation #metatronics
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To manipulate and tailor light, we need materials. Judiciously designed metamaterials and metasurfaces can be utilized to structure and sculpt light and achieve unconventional light-matter interaction with unprecedented functionalities. The extreme properties of such metamaterials provide novel opportunities in optics and photonics. One category of extreme metastructures is materials that function as analog computing machines when waves interact with them, providing the capability to perform mathematical operations, solve equations (such as integral and differential equations), invert matrices, and conduct vector-matrix multiplication with the near speed of light. Another class of extreme platform for light-matter interaction is four-dimensional (4D) metamaterials, in which the material parameters can rapidly vary with time in addition to their variation in space while waves are propagating in them. These 4D material structures provide additional degrees of freedom for light-matter interaction. The third category includes materials with near-zero refractive indices. Such near-zero-index structures provide unprecedented mechanisms for light-matter interaction with unconventional features and exciting properties. In this talk, I will give an overview of some of the phenomena we have introduced and explored with extreme metastructures. I will discuss their salient features and forecast future possibilities.



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  • Date: 30 Jan 2025
  • Time: 11:00 AM to 12:30 PM
  • All times are (UTC+01:00) Rome
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  • Via Mesiano 77
  • Trento, Trentino-Alto Adige
  • Italy
  • Building: DICAM
  • Room Number: Room T1 Alta

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  Speakers

Prof. Nader Engheta

Biography:

Nader Engheta (S'80–M'82–SM'89–F'96) received the B.S. degree in electrical engineering from the University of Tehran, Tehran, Iran, and the M.S. and Ph.D. degrees in electrical engineering from the California Institute of Technology (Caltech), Pasadena.,He is the H. Nedwill Ramsey Professor at the University of Pennsylvania, with affiliation in the departments of Electrical and Systems Engineering, Bioengineering, Materials Science and Engineering, and Physics and Astronomy. After spending one year as a postdoctoral research fellow at Caltech and four years as a Senior Research Scientist at Kaman Sciences Corporation's Dikewood Division, he joined the faculty of the University of Pennsylvania. He is also a member of the Mahoney Institute of Neurological Sciences. He was the graduate group chair of electrical engineering from 1993 to 1997. Selected as one of the Scientific American Magazine 50 Leaders in Science and Technology in 2006 for developing the concept of optical lumped nanocircuits, he is a Guggenheim Fellow, an IEEE Third Millennium Medalist, a Fellow of the American Physical Society (APS), Optical Society of America (OSA), American Association for the Advancement of Science (AAAS), and of the SPIE-International Society for Optical Engineering. He is the recipient of the 2014 Balthasar van der Pol Gold medal from URSI (International Union of Radio Science), the 2013 Inaugural SINA award in engineering, 2013 Benjamin Franklin Key award, the 2012 IEEE Electromagnetics Award, the 2008 George H. Heilmeier Award for Excellence in Research, the Fulbright Naples Chair Award, NSF Presidential Young Investigator award, UPS Foundation Distinguished Educator term Chair, and several teaching awards. He was an Associate Editor of the IEEE Antennas and Wireless Propagation Letters (2002–2007), of the IEEE Transactions on Antenna and Propagation (1996–2001), and Radio Science (1991–1996). He was on the Editorial Board of the Journal of Electromagnetic Waves and Applications, and of Metamaterials. He is currently on the Editorial board of Physical Review X (PRX) of the American Physical Society, of Waves in Random and Complex Media, of Nanophotonics, and of the Istituto Superiore Mario Boella Book Series in Radio Science. He served as an IEEE Antennas and Propagation Society Distinguished Lecturer for the period 1997–1999. He is a member of Sigma Xi, Commissions B, D, and K of the U.S. National Committee (USNC) of the International Union of Radio Science (URSI), and a member of the Electromagnetics Academy. He was the Chair of the Commission B of USNC-URSI for 2009–2011 and of the Gordon Research Conference on Plasmonics in 2012. His current research interests and activities span over a broad range of areas including metamaterials and plasmonics, nanooptics and nanophotonics, nanocircuits and nanostructures modeling, graphene photonics, one-way flow of photons, bio-inspired/biomimetic polarization imaging and reverse engineering of polarization vision, miniaturized antennas and nanoantennas, hyperspectral sensing, biologically-based visualization and physics of sensing and display of polarization imagery, fields and waves phenomena, fractional operators and fractional paradigm in electrodynamics. He has guest edited/co-edited several special issues, including the special issue of the Journal of Electromagnetic Waves and Applications on “Wave Interaction with Chiral and ComplexMedia” in 1992, part special issue of the Journal of the Franklin Institute on “Antennas and Microwaves” in 1995, special issue of Wave Motion on “Electrodynamics in Complex Environments” in 2001, special issue of the IEEE Transactions on Antenna and Propagation on “Metamaterials” in 2003, special issue of Solid State Communications on “Negative Refraction and Metamaterials for Optical Science and Engineering” in 2008, special issue of the IEEE Journal of Selected Topics in Quantum Electronics on “Metamaterials” in 2010, the special issue of the Proceedings of IEEE on “Metamaterials: Fundamentals and Applications in Microwaves and Optical Regimes” in 2011, and the special section of the Physical Review X (PRX) on metamaterials. He co-edited the book “Metamaterials: Physics and Engineering Explorations” by Wiley—IEEE Press, 2006.