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Tunable ultrasound propagation in microscale metamaterials
A new framework developed by MIT researchers advances the experimental capabilities, including design and characterization, of microscale acoustic metamaterials. The work paves the way for microscale devices and components that could be useful for ultrasound imaging or information transmission via ultrasound.
“But challenges in miniaturizing and characterizing acoustic metamaterials at high frequencies have hindered progress towards realizing advanced materials that have ultrasonic-wave control capabilities.” A paper on the work, “ Tailored Ultrasound Propagation in Microscale Metamaterials via Inertia Design,” was recently published in the journal Science Advances. More importantly, the framework is amenable to other fabrication techniques beyond the microscale, requiring merely a single constituent material and one base 3D geometry to attain largely tunable properties.
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