Fig. 5: Dynamic ultrasound wavefront shaping.

A fast-switchable multi-focus ultrasound wavefront is generated with the OPAT system. A (i), (ii), (iii) The spatial modulated light intensity distributions for constructing focused ultrasound at the points x = −10 mm, x = +10 mm, and x = ±10 mm, respectively. B The phase shift of mapped electrical signal actuating individual transducer elements independently corresponding to the light patterns of (i),(ii), and (iii). C (i),(ii), and (iii) The amplitude of ultrasound wavefronts recorded at the focal plane for light intensity pattern denoted by the frames L, R, and D, respectively, located at the distance of approximately 50 mm from the transducer surface. D The scale bar is 5 mm.