Fig. 1: Schematic of the spatial ultrasound modulation (SUM) based on microbubble patterns. | Nature Communications

Fig. 1: Schematic of the spatial ultrasound modulation (SUM) based on microbubble patterns.

From: Spatial ultrasound modulation by digitally controlling microbubble arrays

Fig. 1

a A microbubble can effectively block the acoustic transmission since its acoustic impedance differs significantly from the surrounding liquid. A pattern of microbubbles can therefore spatially modulate the incident plane acoustic wave and give it a complex wavefront. b The microbubble pattern encodes the binary amplitude kinoform (hologram) of the target acoustic field. Refreshing the microbubble pattern enables dynamic spatial ultrasound modulation.

Back to article page