Fig. 2From: Theory for acoustic streaming in soft porous matter and its applications to ultrasound-enhanced convective deliverya Comparison of axial intensity patterns. b Comparison of radial patterns. A comparison of the paraxial Gaussian beam intensity patterns of a focused radiator with more exact diffractive patterns. The on-axis intensity versus axial distance and the off-axis intensity at the focus versus radial distance are displayed in the two figuresBack to article page