349 citations · 2.1k across the 23 of their papers we have counts for
23 papers
Giant and Broadband THz and IR Emission in Drift-biased Graphene-Based Hyperbolic Nanostructures
L. Wang, N. K. Paul, J. Hihath +1
We demonstrate that Cherenkov radiation can be manipulated in terms of operation frequency, bandwidth, and efficiency by simultaneously controlling the properties of drifting elect…
In-plane optical phonon modes of current-carrying graphene
Mohsen Sabbaghi, Tobias Stauber, Hyun-Woo Lee +2
In this work, we study the in-plane optical phonon modes of current-carrying single-layer graphene whose coupling to the electron gas is strong. Such modes are expected to unde…
Lateral recoil optical forces on nanoparticles near nonreciprocal surfaces
N. K. Paul, J. S. Gomez-Diaz
We investigate lateral recoil forces exerted on nanoparticles located near plasmonic platforms with in-plane nonreciprocal response. To this purpose, we first develop a comprehensi…
Nonreciprocal Phased-Array Antennas
J. W. Zang, A. Alvarez-Melcon, J. S. Gomez-Diaz
A phased-array antenna is a device that generates radiation patterns whose shape and direction can be electronically controlled by tailoring the amplitude and phase of the signals…
Wideband Bandpass Filters Using a Novel Thick Metallization Technology
Celia Gomez-Molina, Alejandro Pons-Abenza, James Do +4
A new class of wideband bandpass filters based on using thick metallic bars as microwave resonators, instead of common microstrip lines, is presented. These bars provide a series o…
Nonreciprocal Yagi-Uda Filtering Antennas
J. W. Zang, X. T. Wang, A. Alvarez-Melcon +1
This paper proposes a novel and compact nonreciprocal filtering antenna based on temporal modulation. The device is composed of a third order filtering section integrated into a Ya…
Non-Reciprocal and Collimated Surface Plasmons in Drift-biased Graphene Metasurfaces
D. Correas-Serrano, J. S. Gomez-Diaz
We explore the unusual non-reciprocal and diffraction-less properties of surface plasmon polaritons propagating in drift-biased graphene-based metasurfaces. We show that applying a…
Coupling Matrix Representation of Nonreciprocal Filters Based on Time Modulated Resonators
A. Alvarez-Melcon, X. Wu, J. Zang +2
This paper addresses the analysis and design of non-reciprocal filters based on time modulated resonators. We analytically show that time modulating a resonator leads to a set of h…
Giant Lateral Optical Forces on Rayleigh Particles near Hyperbolic and Extremely Anisotropic Metasurfaces
N. K. Paul, D. Correas-Serrano, J. S. Gomez-Diaz
We report a dramatic enhancement of the lateral optical forces induced on electrically polarizable Rayleigh particles near hyperbolic and extremely anisotropic metasurfaces under s…
Routing Valley Excitons in a Monolayer MoS2 with a Metasurface
Liuyang Sun, Chun-Yuan Wang, Alexandr Krasnok +8
Excitons in monolayer transition metal dichalcogenides (TMDs) are formed at K and K' points at the boundary of the Brillouin zone. They acquire a valley degree of freedom, which ma…
Graphene-based Antennas for Terahertz Systems: A Review
D. Correas-Serrano, J. S. Gomez-Diaz
We review the use of graphene to develop reconfigurable, miniaturized, and efficient terahertz (THz) antennas and associated feeding networks, and attempt to identify current resea…
Black Phosphorus Plasmonics: Anisotropic Elliptical Propagation and Nonlocality-Induced Canalization
D. Correas-Serrano, J. S. Gomez-Diaz, A. Alvarez Melcon +1
We investigate unusual surface plasmons polariton (SPP) propagation and light-matter interactions in ultrathin black phosphorus (BP) films, a 2D material that exhibits exotic elect…
Gradient Nonlinear Pancharatnam-Berry Metasurfaces
Mykhailo Tymchenko, J. Sebastiàn Gomez-Diaz, Jongwon Lee +3
We apply the Pancharatnam-Berry phase approach to plasmonic metasurfaces loaded by highly nonlinear multi-quantum well substrates, establishing a platform to control the nonlinear…
Nonlinear Processes in Multi-Quantum-Well Plasmonic Metasurfaces:Electromagnetic Response, Saturation Effects, Limits and Potentials
J. S. Gomez-Diaz, M. Tymchenko, J. Lee +2
Nonlinear metasurfaces based on coupling a locally enhanced plasmonic response to intersubband transitions of n-doped multi-quantum-wells (MQWs) have recently provided second-order…
Self-biased Reconfigurable Graphene Stacks for Terahertz Plasmonics
J. S. Gomez-Diaz, C. Moldovan, S. Capdevilla +5
The gate-controllable complex conductivity of graphene offers unprecedented opportunities for reconfigurable plasmonics at THz and mid-IR frequencies. However, the requirement of a…
On the Influence of Spatial Dispersion on the Performance of Graphene-Based Plasmonic Devices
Diego Correas-Serrano, Juan Sebastian Gomez-Diaz, Alejandro Alvarez-Melcon
We investigate the effect of spatial dispersion phenomenon on the performance of graphene-based plasmonic devices at THz. For this purpose, two different components, namely a phase…
Graphene Antennas: Can Integration and Reconfigurability Compensate for the Loss?
Julien Perruisseau-Carrier, Michele Tamagnone, Juan Sebastian Gomez-Diaz +1
In this opening presentation we will first recall the main characteristics of graphene conductivity and electromagnetic wave propagation on graphene-based structures. Based on thes…
Integral Equation Analysis of Plane Wave Scattering by Coplanar Graphene-Strip Gratings in the THz Range
Olga V. Shapoval, Juan Sebastian Gomez-Diaz, Julien Perruisseau-Carrier +2
The plane wave scattering and absorption by finite and infinite gratings of free-space standing infinitely long graphene strips are studied in the THz range. A novel numerical appr…
Sinusoidally-Modulated Graphene Leaky-Wave Antenna for Electronic Beamscanning at THz
Marc Esquius-Morote, Juan Sebastian Gomez-Diaz, Julien Perruisseau-Carrier
This paper proposes the concept, analysis and design of a sinusoidally-modulated graphene leaky-wave antenna with beam scanning capabilities at a fixed frequency. The antenna opera…
Graphene Based Plasmonic Tunable Low Pass Filters in the THz Band
D. Correas Serrano, J. S. Gomez Diaz, J. Perruisseau-Carrier +1
We propose the concept, synthesis, analysis, and design of graphene-based plasmonic tunable low-pass filters operating in the THz band. The proposed structure is composed of a grap…
Graphene-based plasmonic switches at near infrared frequencies
J. S. Gomez-Diaz, J. Perruisseau-Carrier
The concept, analysis, and design of series switches for graphene-strip plasmonic waveguides at near infrared frequencies are presented. Switching is achieved by using graphene's f…
Effect of Spatial Dispersion on Surface Waves Propagating Along Graphene Sheets
J. S. Gomez-Diaz, J. R. Mosig, J. Perruisseau-Carrier
We investigate the propagation of surface waves along a spatially dispersive graphene sheet, including substrate effects. The proposed analysis derives the admittances of an equiva…
Reconfigurable THz Plasmonic Antenna Concept Using a Graphene Stack
Michele Tamagnone, Juan Sebastian Gomez Diaz, Juan Ramon Mosig +1
The concept and analysis of a Terahertz (THz) frequency-reconfigurable antenna using graphene are presented. The antenna exploits dipole-like plasmonic resonances that can be frequ…