Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses

Morphing acoustic metasurfaces offer exciting possibilities for dynamically controlling wavefronts in space and time. This work presents a unified framework for reconfigurable acoustic holography using fluidic holographic lenses, capable of dynamically shaping ultrasound fields through volume‐controlled deformation. Two distinct but conceptually integrated implementations are introduced and experimentally validated: i) embedded fluidic lenses, which use 3D‐printed holograms immersed in a fluid medium to enable volumetric phase modulation, and ii) aperture‐defined fluidic lenses, which rely solely on membrane deformation over a geometrically shaped container opening to approximate target pressure fields without pre‐fabricated holograms. Both approaches exploit fluid‐structure interactions to achieve continuous modulation of the acoustic field at the target plane. This programmable and hardware‐efficient strategy enables adaptive wavefront control without reliance on complex phased arrays or static rigid structures. The proposed system demonstrates reconfigurable acoustic patterning and establishes a generalizable foundation for dynamic acoustic wave engineering in applications such as biomedical imaging, particle manipulation, ultrasound haptics, and acoustic power transfer.