New pattern for underwater resonators
A resonator that enhances ultrasound waves in water could aid underwater communication.
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An underwater metasurface that performs far better than conventional resonators has been developed by Mohamed Farhat and Ying Wu from KAUST, working with colleagues from University Bourgogne Franche-Comté in France. A new pattern is helping to overcome some of the challenges of communication and sensing in water.
Electromagnetic waves are heavily attenuated as they pass through water, which limits their range. Instead, acoustic or sound waves provide a more viable option. But the resonators or cavities that confine and enhance acoustic waves, which are crucial for these communication systems, do not operate as well as their electromagnetic counterparts, particularly underwater, due to increased inherent losses.
