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Research Article

Self-Navigated 3D Acoustic Tweezers in Complex Media Based on Time Reversal

Figure 5

Time reversal acoustic tweezers through ex vivo human skull: (a) schematic of time reversal based acoustic tweezers through ex vivo human skull, which manipulates the PDMS particle in a 3D path (particle is transferred along an isosceles triangular path (blue curve) with a base length and height of 10 mm in the - plane and then along a circular path (red curve) of diameter 10 mm in the - plane); (b) 3D ultrasonic image of manipulated particle and schematic of motion trajectory in 3D space; (c, d) optical images of the manipulated particle (dyed red) through the skull and schematic of motion trajectory in top view (c) and side view (d). Time-reversal-based acoustic tweezers through the ex vivo human skull are shown in Movie S3. All scale bars are 10 mm.
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