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SUMMARY:Metamaterials for therapeutic ultrasound applications - Noé Jimé
 nez (Consejo Superior de Investigaciones Cientificas)
DTSTART:20230525T084500Z
DTEND:20230525T093000Z
UID:TALK198907@talks.cam.ac.uk
DESCRIPTION:Passive acoustic structures can be used to engineer wavefronts
  in many practical applications. By tuning its topology\, the local refrac
 tion\, scattering or inner resonances can be tailored for a particular fun
 ctionality. We report the use of metasurfaces to synthesize wavefronts by 
 tuning subwavelength 3D-printed elastic resonators for ultrasonic frequenc
 ies. These structures are shown to be remarkably flexible for spatially-co
 ding arbitrary phase-conjugated fields corresponding to the ones used for 
 selected biomedical ultrasound applications. In this way\, by tuning the h
 ologram inner structure\, we can synthesize high-intensity acoustic images
  with unprecedent resolution\, which are currently being applied to focus 
 therapeutic ultrasound beams and treat several diseases in a non-invasive\
 , non-ionizing\, localized and low-cost manner.
LOCATION:Seminar Room 1\, Newton Institute
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