Moving objects with ultrasound waves: Metasurface Acoustics with Dr. Ognjen Ilic

Science Society by Catarina Cunha

Episode notes

In this episode, we're joined by Dr. Ognjen Ilic, a leading scientist in the field of acoustic waves and metasurfaces, to discuss how waves exert force on obstacles in their path and how this can be manipulated. Conventionally, the radiation force exerted by waves is limited by the shape and size of the objects being manipulated. Dr. Ilic, however, has made a breakthrough discovery that challenges this fundamental rule.

Dr. Ilic explains how subwavelength-structured surfaces (metasurfaces) allow for the control of the radiation force exerted by acoustic waves, independent of the object's overall shape and size. The manipulation of this force is solely determined by the arrangement of the surface features on the metasurface.

We delve into Dr. Ilic's fascinating experiments demonstrating how this anomalous metasurface scattering can ena ... 

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Keywords
radiation forcescontactlessanomalous acoustic scatteringultrasound wavesmeta surfacesmoving objectsacusticsmetasurface acousticsacoustic wavesradiation force