Daniel Torrent
Universitat Politècnica de València, Spain.

"Two Dimensional Acoustic Metamaterials"
Acoustic metamaterials are sub wavelength structured systems whose acoustic properties are determined by the location and scattering properties of their building blocks. If the metamaterial is made of arrays of sound scatterers in a fluid background it behaves as an effective fluid-like material, even in the case where the building blocks are elastic cylinders. As a result, we can build fluid like metamaterials with unusual acoustic properties, like mass density anisotropy and negative compressibility.
In this work we will present two-dimensional acoustic metamaterials, in which the sound scatterers are cylindrical structures. It will be shown that with very simple sound scatterers we can obtain both isotropic and anisotropic fluid-like metamaterials and that the constituent parameters can be both positive and negative.

Jordi Bonache
Universidad Autonoma de Barcelona, Spain.

"Application of dispersion engineering to the optimization of RFID tags"
This talk is focused on the design of dual-band impedance-matching networks of interest in RF identification (RFID) systems. Due to the capabilities of the metamaterial transmission lines to impose some specific value of electrical length and characteristic impedance it is possible to obtain RFID tags operational at two different frequencies. Since the frequencies of operation of the different RFID standards around the world are relatively close a perturbation method can be successfully used for the determination and design of these devices. Some examples and practical applications will be included in the talk.

Miguel Navarro-Cía
Universidad Pública de Navarra, Spain.

"Sculpting metals for anomalous transmission phenomena, complex waves and negative refractive metamaterials: underlying physics and applications"
In this talk, the potential of controlling the electromagnetic propagation by periodically-textured surfaces is reviewed. It is shown that backward-wave- and slow-wave-propagation, superluminal, effective negative refractive index and highly-confined complex surface waves are obtained with these metallic surfaces. The role of periodicity, complex surface waves and resonant-electric-coupling in all these phenomena is emphasized and compared against equivalent circuit models. The explanation of the underlying physics is combined with exemplary applications focused on the millimeter- and submillimeter-wave band.

Pablo Benítez
Universidad Politécnica de Madrid, Spain.

"Perfect focusing and perfect imaging with positive refraction"
Perfect imaging stands for the ability to of an optical system to produce images with a resolution not limited by the wavelength of light. The first idea for perfect imaging was based on negative refraction, based on their capability to amplify evanescent waves. The possibly of perfect imaging with positive refraction was first suggested by Leonhardt in a seminal paper in 2009, in which perfect focusing of waves was demonstrated on a particular device: the Maxwell-Fish-Eye (MFE) lens. Leonhardt's approach needed the introduction of "perfect drains", concept that created considerable controversy afterwards. Here we will present several aspects of the field in which we are contributing. First, the design a perfect drain, that ends that controversy. Second, the application of Transformation Optics to generate other Perfect Imaging devices (particularly, the Spherical Geodesic Waveguide). Third, the first simulation of perfect imaging with positive refraction for microwaves showing lambda/500 super-resolution, and finally we will show also that perfect-focusing of waves, although intimately related with perfect focusing, does not guarantee it, as initially suggested.

Juan Carlos Iriarte
Universidad Pública de Navarra, Spain.

"EBG structures Application in Antennas Field and Reflecting Surfaces"
In this talk Electromagnetic BandGap (EBG) technology is going to be presented as an alternative to conventional technology. Some year ago, a large number of designs could be found in the literature showing the advantages and new possibilities offered by EBG technology to designers. However, there was a lack of designs concentrated in fulfil the specifications of tangible applications. Therefore, the principal objective of the work presented in this talk is to collaborate with the evolution of EBG technology, focussing in the design, fabrication and measurement of prototypes which are able to compete with conventional technology designs, focussing in antennas and reflecting surfaces fields. EBG technology has experimented a great evolution in these last years, due to works as the presented in the talk, becoming actually as a real alternative to conventional technology for designers.