A new kind of metamaterials that is capable of bending, shaping, as well as focusing sound waves passing through it was recently created by a researchers team that has been working for quite some time at the Universities of Bristol and Sussex. This new metamaterial will bring forth a completely new class of well-engineered surfaces that will be in ability to perform tasks contradicting the natural course of action. The materials have already displayed astonishing results by manipulating light leading to creation of real-life version of Harry Potter’s Invisibility cloak.
But as the times and research levels progressed, the team was finally able to show the same results with sound waves as well. Sound fields shaped in great detailing can be used for medical imaging as well as therapy along with a wide range of consumer products including ultrasonic haptics and audio spotlights. A paper was recently published on this research that demonstrated a very economic and pocket-friendly manner of creating shaped sound waves that can be used in different types of acoustic metamaterials. For this purpose, the team collected a metamaterial later from number of small sized bricks that have coiled up space inside them each. This coiled up space in these bricks works to slow down the sound waves implying that entering sound waves can be easily transformed into any needed sound field.
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