Figure 7: Generation of a self-bending acoustic beam along a Bézier curve.
From: Generation of acoustic self-bending and bottle beams by phase engineering
(a) The wrapped phase profile for synthesizing the Bézier beam, where the red dashed line represents the profile obtained from the theory and the blue data points correspond to the modulations applied onto the speaker array. (b) The speaker array consisting 40 speakers (1.5 cm in diameter and 2.5 cm spacing) used in our experiment. (c–d) Numerically simulated sound pressure and intensity of the generated beam. (e) The propagation of an input Gaussian beam with a similar beam size of the main lobe of the Bézier beam in d. Scale bar, 0.1 m. a.u., arbitrary unit.
