Acoustic Metamaterials
Phononic Structures
Recent success in the design of artificial acoustic materials with properties not found in nature, denoted metamaterials, has boosted a great amount of effort to develop new applications. Acoustic metamaterials have been proposed as subwavelength devices to control acoustic waves. I am interested in the study of the subwavelngth acoustic absorption, diffusion and control of sound by using bulk metamaterials or metasurfaces.
Research Lines
- Perfect absorption in subwavelength structures (sound and vibrations)
- Surface Acoustic Waves
- Sound diffusers and Metadiffusers
- Nonlinear resonant structures
Phononic structures are artificial materials made of a distributions of solid scatterers embedded into a solid host medium with different physical properties. An interesting case of phononic structure, known as sonic structures, appears when the solid scatterers are embedded in a fluid medium.
Research Lines
- Phononic and Sonic Crystals.
- Diffraction grattings.
- Granular crystals.
Applications of acoustic structures in the aeronautic and space domains
Disorder and correlated disorder
Due to the combination of the periodicity and both the resonance and absorption properties of the scatterers, the properties of acoustic metamaterials or sonic crystals can be exploited as mitigation systems for sound and vibrations in aeronautic and space domains. My researhc in focused on applications for train noise mitigation and design of sound mitigation systems for the launch pad and fairing of the rockets.
Research Lines
- Locally resonant sonic crystals for train noise mitigation.
- Locally resonant sonic crystals for noise reduction in launch pad and fairing.
The universe is broadly ordered. Order can be found in all the structures that exist around us at different scales. However, disorder also appears very often in nature: lotus flowers, human bones, white beetles and the beautiful stones of the Taj Mahal are good examples. They all have disordered internal structures that strongly disperse waves. The randomly distributed rays then interfere with each other, leading to interesting, and sometimes even unexpected physical phenomena.
Research Lines
- Stealt and Hyperuniform materials.
- Many-body systems.
Acoustic Materials
With the rapid development of printing techniques togheter with the advances in acoustic metamaterials as well as and transformation acoustics, efficient characterization methods for the estimation of the unprecedented acoustic effective properties of structured materials are timely required. Moreover new possibilities to the design of acoustic materials and natural acoustic materials have been proposed.
Research Lines
- Modelization and characterization of porous materials (isotropic and anisotropic).
- 3D printed materials.
- Natural acoustic materials.
My research is transversal and lies in the frontiers between different topics as Metamaterials, Crystalline structures, Acoustic materials and disordered systems.
My interest is focused on the wave propagation in complex media paying special attention to several wave phenomena as perfect absorption, diffusion of waves, transparency, cloaking, band gap engineering, waveguiding, filtering, surface waves, and diffraction among others.
My interest is both theoretical and experimental trying always to combine both in each work.
