Novel Material Platforms and Transdimensional Lattices for Metaphotonic Devices
DIPC Seminars
- Speaker
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Viktoriia Babicheva, University of Arizona, United States
- When
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2019/07/30
14:00 - Place
- Donostia International Physics Center
- Add to calendar
-
iCal
Optical metamaterials are three-dimensional structures with rationally
designed building blocks that enable devices with distinct optical responses
not attainable with naturally available materials. Comprising a class of
metamaterials with reduced dimensionality, optical metasurfaces allow the
miniaturization of conventional refractive optics into planar structures, and
a novel planar technology is expected to provide enhanced functionality for
photonic devices being distinctly different from those observed in the three-
dimensional case. Transdimensional photonics has emerged as a new field of
science and engineering that explores the optical properties of materials and
nanostructures in the translational regime between two and three dimensions.
In this talk, I will show that nanostructures made of high-index materials,
such as silicon, transition metal dichalcogenides, or hexagonal boron nitride,
support optically induced both electric and magnetic resonances in the visible
and infrared spectral ranges [1,2]. I will present the results on
antireflective properties of metasurfaces based on high-index nanoparticle
arrays and explain how zero backward scattering from the highly reflective
substrate can be achieved. The recent discovery of high-index materials that
offer low loss and tunability in their optical properties as well as
complementary metal-oxide-semiconductor (CMOS) compatibility can enable a
breakthrough in the field of nanophotonics, optical metamaterials, and their
applications.
[1] V.E. Babicheva and A.B. Evlyukhin, "Resonant Lattice Kerker Effect in
Metasurfaces with Electric and Magnetic Optical Responses," Laser & Photonics
Reviews 11, 1700132 (2017).
[2] V.E. Babicheva and J.V. Moloney, "Lattice Zenneck modes on subwavelength
antennas," Laser & Photonics Reviews 12, 1800267 (2019).
Host: Alexey Nikitin