Alfonso Climente
Polytechnic University of Valencia
23 Papers
51 Citations
Alfonso Climente is an academic researcher from Polytechnic University of Valencia. The author has contributed to research in topics: Metamaterial & Scattering. The author has an hindex of 10, co-authored 23 publications.
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Papers
Sound focusing by gradient index sonic lenses
TL;DR: In this paper, the index-gradient is achieved in these type of flat lenses by a gradual modification of the sonic crystal filling fraction along the direction perpendicular to the lens axis, and the focusing performance is well described by an analytical model based on ray theory as well as by numerical simulations based on the multiple-scattering theory.
Omnidirectional broadband acoustic absorber based on metamaterials
TL;DR: In this article, the acoustic analogue of the photonic black hole is presented. But the proposed acoustic blackhole acts like an on-mid-directional broadband absorber with strong absorbing efficiency.
185
Three-dimensional axisymmetric cloak based on the cancellation of acoustic scattering from a sphere.
Lorenzo Sanchis,Victor M. García-Chocano,R. Llopis-Pontiveros,Alfonso Climente,Juan P. Martínez-Pastor,Francisco Cervera,José Sánchez-Dehesa +6 more
TL;DR: The design, fabrication, and experimental characterization of a directional three-dimensional acoustic cloak for airborne sound, which shows a reduction of the 90% of the sphere scattering cross section at the frequency of 8.55 kHz is presented.
174
Gradient index lenses for flexural waves based on thickness variations
TL;DR: In this paper, a method for the realization of gradient index devices for flexural waves in thin plates is presented based on the thickness-dependence of the dispersion relation of flexural wave, which is used to create gradient index device by means of local variations of the plate's thickness.
Sound focusing by gradient index sonic lenses
TL;DR: In this paper, the index-gradient is achieved in these type of flat lenses by a gradual modification of the sonic crystal filling fraction along the direction perpendicular to the lens axis, and the focusing performance is well described by an analytical model based on ray theory as well as by numerical simulations based on the multiple-scattering theory.