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Metamaterials and metasurfaces


11:00: Effective model of propagation across a metasurface with resonant Mie inclusions

Kim Pham (1), Agnès Maurel (2)
(1)ENSTA Paris (France) , (2)ESPCI (France)

We study the scattering of waves by a single row of resonant inclusions, of the Mie type. An effective model based on matched asymptotic analyzed is used to account for the small thickness of the array. Hence, instead of the effective bulk parameters, we end up with interface parameters entering in jump conditions for the electromagnetic fields, among these parameters, one is frequency dependent and encapsulates the resonant behav- ior of the inclusions.
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11:15 Invited talk: Tunable Infrared Metasurface based on VO2 for Anti-Counterfeiting and Adaptive Radiative Cooling

online, on-demand

Junichi Takahara
Osaka University (Japan)

We demonstrate tunable infrared metasurface by utilizing metal-insulator transition material of VO2. Switching optical property between dielectric and negative dielectric opens new functionality of metasurface such as anti-counterfeiting and adaptive radiative cooling in wide range of spectra from near- to mid-IR range.
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11:35 Invited talk: Radiation control with exceptional points in non-Hermitian plasmonic systems

online, on-demand

Yuto Moritake
Tokyo Institute of Technology (Japan)

In this paper, we introduce our research based on the singular eigenstates in EP. The first is formation of circular polarization eigenstates and the second is formation of Huygens dipoles at EPs. The studies introduced in this paper provide new photonic functionalities caused by the singular eigenstates at EP in NH systems.
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11:55 Invited talk: Manipulating the Polarization of Electromagnetic Waves via Metastructures

online, on-demand

Ruwen Peng, Mu Wang
Nanjing University (China)

In this work, we present our recent work on manipulating the polarization of electromagnetic waves with metastructures. The investigations provide some guidelines to control the polarization of electromagnetic waves at subwavelength scale.
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12:15 Invited talk: Water-based metamaterials for advanced microwave control and sensing

online, live

Rasmus E. Jacobsen (1), Alex Krasnok (2), Andrea Alu (2), Samel Arslanagic (1), Andrei V. Lavrinenko (1)
(1)Technical University of Denmark (Denmark) , (2)City University of New York (USA)

In the talk I review different water-based devices for microwave control and sensing. Among the effective implementation of water-based elements there are examples of metasurfaces, absorbers, dielectric resonance antennas, radio-frequency components and structures with a so-called bound state in the continuum as a sensor.
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