Publications de Juan Sebastian Gomez Diaz

On the Influence of Spatial Dispersion on the Performance of Graphene-Based Plasmonic Devices

We investigate the effect of spatial dispersion phenomenon on the performance of graphene-based plasmonic devices at terahertz (THz). For this purpose, two different components, namely a phase shifter and a low-pass filter, are taken from the literature, i ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Graphene-Based Plasmonic Tunable Low-Pass Filters in the Terahertz Band

Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz

We propose the concept, synthesis, analysis, and design of graphene-based plasmonic tunable low-pass filters operating in the terahertz band. The proposed structure is composed of a graphene strip transferred onto a dielectric and a set of polysilicon dc g ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Sinusoidally Modulated Graphene Leaky-Wave Antenna for Electronic Beamscanning at THz

Julien Perruisseau-Carrier, Marc Esquius Morote, Juan Sebastian Gomez Diaz

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 operates at terahertz frequencies and is composed of a graphene sheet transferred ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Reflectarray Elements in Substrate Integrated Waveguides (SIW)

Juan Ramon Mosig, Marc Esquius Morote, Juan Sebastian Gomez Diaz

2014

Spatially Dispersive Graphene Single and Parallel Plate Waveguides: Analysis and Circuit Model

Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz

The propagation of surface waves along spatially dispersive graphene-based 2-D waveguides is investigated in detail. Graphene is characterized using a full-k(rho) conductivity model under the relaxation-time approximation, which allows to obtain analytical ...

Institute of Electrical and Electronics Engineers2013

A transmission line model for plasmon propagation on a graphene strip

Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz

We present a transmission line model for TM plasmon propagation along a graphene strip, and derive closed-form expressions for the kinetic and Faraday inductance, resistance, and electrostatic capacitance of the equivalent circuit as a function of graphene ...

2013

Integral Equation Analysis of Plane Wave Scattering by Coplanar Graphene-Strip Gratings in the THz Range

Juan Ramon Mosig, Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz

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 approach, based on graphene surface impedance, hyper-singular integral equations ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Graphene-based plasmonic switches at near infrared frequencies

Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz

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 field effect to selectively enable or forbid propagation on a section of the ...

Optical Society of America2013

Dyadic Green's functions of a graphene layer and their efficient calculation

Juan Ramon Mosig, Michael Mattes, Ioannis Koufogiannis, Juan Sebastian Gomez Diaz

2013

Design of a reflectarray element integrated in a solar cell panel

Julien Perruisseau-Carrier, Juan Sebastian Gomez Diaz, Philippe Dreyer

2013