April 4, 2014
Colloquium Topic: Extraordinary Optical and Acoustic Transmission in Metamaterials
In this talk, I will review some recent advances made by our group regarding extraordinary optical and acoustic transmission in metamaterials. After a brief historical introduction on electromagnetic and acoustic metamaterials and their extraordinary transmission properties, I will introduce the concept of broadband extraordinary transmission at the Brewster angle of 1-D metallic gratings. I will then extend this concept to 1-D and 2-D acoustic gratings. Finally, I will report theoretical predictions and experimental results on the formation of pass bands and stop bands of extraordinary acoustic transmission in multilayer structures based on alternating layers of acoustic metamaterial and air.
Colloquium Speaker: Giuseppe D’Aguanno
Giuseppe D’Aguanno received his Ph.D. in Applied Electromagnetism and Electro-Physical Sciences from the University of Rome “La Sapienza” (Italy) in 2000. From 2001 to 2003, he was a research associate with the National Institute for the Physics of Matter (INFM-Italy) and temporary professor at the University of Rome “La Sapienza” where he taught undergraduate and graduate level electromagnetism, classical mechanics, and thermodynamics. From 1999 to 2002, he was also a visiting scholar at U.S. Army, AMRDEC, Redstone Arsenal. From 2003 to 2005, he was a research physicist for Time Domain Corporation in Huntsville-Alabama. From 2005 to 2009, he was a U.S. National Research Council (National Academy of Sciences) senior research associate at the Charles M. Bowden Laboratory of the U.S. Army (Redstone Arsenal). He is currently a senior research scientist for AEgis Technologies (Huntsville-Alabama).
His research interests include nano-structures, photonic crystals, meta-materials, plasmonic structures, acoustics, non-hermitian electromagnetic problems, tunneling problems in dispersive and absorbing materials, guided propagation, diffraction and super-resolution, ultra-short pulse propagation in linear and nonlinear materials, dispersion-free propagation, nonlinear interactions in quadratic and cubic materials, and Green’s function and density of modes for finite structures. Dr. D’Aguanno is the coauthor of more than 200 publications including peer reviewed journals and conference proceedings, has 5 book contributions, and also holds 4 patents in the field of nano-photonics and metamaterials. He is a member of the Optical Society of America. In 2013 he passed the Italian Ministry of Education and Scientific Research qualification exams to function as full professor in experimental matter physics and in theoretical matter physics, and as associate professor in electromagnetic fields.