Figure 3
From: Breaking the acoustic diffraction limit with an arbitrary shape acoustic magnifying lens
(a,b) The near and far field results of two line sources locating at the distance of \(D=1.6\lambda\). (c,d) The pressure distributions of the same sources locating at the sub-wavelength distance after utilizing the ASML with new magnification factor. It should be remarked that the materials of the stretched region remain unchanged.
