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Acoustic imaging with metamaterial Luneburg lenses
Unmet Need Controlling and focusing acoustic waves is a crucial component of fields such as ultrasonic sensing and speaker system design. Luneburg lenses, spherically symmetrical gradient refractive index (GRIN) devices with unique imaging properties, are…
Acoustic lensing and holographic reconstruction with metamaterials
Unmet Need Manipulation of sound waves in air often requires many amps, transducers, and the electronics to control them, making applications like ultrasonic sensors for cars and wireless power transfer complex and power intensive. Acoustic…