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- W4383604610 abstract "Phased array transducers can shape acoustic fields for versatile manipulation, however, generating multiple foci typically requires complex optimization. In this study, we show that Dammann gratings - binary phase gratings used in optics to generate arrays of equal intensity spots - can be adapted for acoustics to produce multiple equal strength foci using a phased array transducer. The transducer elements were assigned phases of 0 or pi based on a Dammann grating defined by transition points. Simulations results show that simple gratings with two transition points can generate fields with up to 12 foci with nearly equal acoustic pressures. Compared to conventional multi focus phase optimization techniques, the Dammann grating approach is computationally efficient and enables facile reconfiguration of the focal pattern by adjusting the single focus or grating hologram. This study demonstrates that adapting binary phase functions from photonics can expand the capabilities of ultrasound for versatile acoustic manipulation tasks that require parallel actuation at multiple points." @default.
- W4383604610 created "2023-07-08" @default.
- W4383604610 creator A5047882495 @default.
- W4383604610 date "2023-07-05" @default.
- W4383604610 modified "2023-10-18" @default.
- W4383604610 title "Multi-Foci Acoustic Field Generation Using Dammann Gratings for Phased Array Transducers" @default.
- W4383604610 doi "https://doi.org/10.48550/arxiv.2307.02696" @default.
- W4383604610 hasPublicationYear "2023" @default.
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