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. Author manuscript; available in PMC: 2013 Sep 19.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Aug;59(8):1664–1673. doi: 10.1109/TUFFC.2012.2372

Fig. 10.

Fig. 10

Acoustic intensity distribution on the focal plane. (a) second harmonics, f2 = 500 kHz; (b) third harmonics, f3 = 750 kHz; (c) fundamental, f1 = 500 kHz; (d) fundamental, f1 = 750 kHz. The axes are in millimeters.