https://www.selleckchem.com/pr....oducts/santacruzamat
Focusing of ultrasound waves is criticalto a number ofclinical andindustrial applications including biomedical and underwater imaging,nondestructive evaluation and material processing. This paper discusses the use of a novel'add-on' gradient refractive index (GRIN) metamaterial structure made ofconcentric shells,to focus ultrasonic waves generated by conventional transducers. Analysis based on the Huygen's principle and numerical simulations is used to design the geometric and material properties of the proposed struct
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