[EN] In this paper we present a new way to obtain tunable acoustic hooks. The breaking of the symmetry of the material composition is used for the generation of acoustic hooks from Janus cylinders. This fact is possible ...
[EN] In acoustical lenses both resolution and depth of focus are determined by diffraction and the smaller the lens aperture the worse the resolution and the greater the depth of focus. Diffraction-limited resolution has ...
[EN] In this paper, we demonstrate that, contrary to what the Geometrical Optics laws dictate, a flat polymer mesoscale cuboid immersed in water with no need of negative refraction can focus sound. Two main polymers ...
[EN] One of the most important purposes when designing an ultrasonic lens, focuses on improving targeting
the waves. On the other hand, it is well known the great scientific interest in structures that follow
fractal ...
[EN] Per the laws of geometrical optics, a plane-parallel medium does not possess focusing properties. However, in this paper, we demonstrate for the first time that an acoustic cuboid particle filled with CO2 is able to ...
[EN] Rice is considered one of the most important crops in the world. According to the Food and Agriculture Organization of the United Nations (FAO), rice production has increased significantly (156%) during the last 50 ...