2017 Fall Graduate Colloquium Series: Long Tao

DateSeptember 15, 2017Time3:35 - 5:00 pm
LocationBaylor Sciences Building, Room A.202
Description
2017 Fall Graduate Colloquium Series

Long Tao

Hyperbolic Metamaterials and their Properties

Metamaterials are artificial optical media composed of subwavelength metallic and dielectric building blocks that feature optical phenomena not present in naturally occurring materials. Although they can serve as the basis for unique optical devices that mold the flow of light in unconventional ways, three-dimensional metamaterials suffer from extreme propagation losses. Two dimensional metamaterials (metasurfaces) such as hyperbolic metasurfaces for propagating surface plasmon polaritons have the potential to alleviate this problem. Because the surface plasmon polaritons are guided at a metalâ€"dielectric interface (rather than passing through metallic components), these hyperbolic metasurfaces have been predicted to suffer much lower propagation loss while still exhibiting optical phenomena akin to those in three dimensional metamaterials. Moreover, because of their planar nature, these devices enable the construction of integrated metamaterial circuits as well as easy coupling with other optoelectronic elements. In this presentation, I will introduce these metamaterials and show you some peculiar properties of it.

Reference: A. A. High et al., Nature 522: 192, 193, 194, 195, 196 (2015). doi:10.1038/nature14477

For more information contact: Dr. Ken Hatakeyama 254-710-2511
PublisherPhysics
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