February 22, Ayman Abouraddy, University of Central Florida


MSE Seninar: 2:00 PM, Room 210, 8 St. Mary’s Street

Multi-Material Fibers: Prospects for Photonics, Energy, and Biotechnology

Abstract: Incorporating multiple functional materials in a single optical fiber is paving the way to realizing new and unconventional optical and optoelectronic functionalities in the unique form factor of an optical fiber. Several breakthroughs that my group has recently achieved in this area are leading to new ways of thinking of the fiber drawing process itself. For example, we are developing fiber drawing as a nanofabrication tool that appropriates the inherent scalability of thermal drawing, the controllable size reduction from a macroscopic scale-model (‘preform’), and the one-dimensional fiber form-factor for applications in the areas of photonics, solar energy concentration, and recently biomedicine. I will review our results on multi-octave midinfrared supercontinuum generation in composite chalcogenide glass nanowires. Next, I will describe our discovery of in-fiber fluid and mechanical instabilities that has led to a novel approach for the fabrication of multimaterial structured micro- and nanoparticles. I will also describe our efforts on biosensing through specific protein-protein interactions and the encapsulation of biomaterials using micro- and nano-particles produced by in-fiber emulsification. Finally, I will also present our results on the fabrication of efficient fiber luminescent solar concentrators that may pave the way to solar harvesting fabrics and clothing.


Biography: Ayman F. Abouraddy received the B.S. and M.S. degrees from Alexandria University, Alexandria, Egypt, in 1994 and 1997, respectively, and the Ph.D. degree from Boston University, Boston, MA, in 2003, all in electrical engineering. In 2003 he joined MIT as a postdoctoral fellow working with Profs. Yoel Fink and John D. Joannopoulos, and then became a Research Scientist at the Research Laboratory of Electronics in 2005. He is the coauthor of more than 50 journal publications, holds seven patents, and has five patents pending. He joined CREOL, The College of Optics & Photonics, at the University of Central Florida as an assistant professor in 2008 where he has established facilities for fabricating new classes of multi-material fibers for applications ranging from mid-infrared optics to solar energy concentration.


Faculty Host: Siddharth Ramachandran

Student Host: Debangshu Mukherjee