(Color online) Phased arrays showing the appropriate phase delays to generate different modalities.
(Color online) An array where all the elements are in phase.
(Color online) An alternative array configuration, where subsequent elements are in anti-phase with each other.
Higher order diffraction terms start to overlap the lowest order mode at 19.5° for an alternating polarity array with six elements.
(Color online) Out of plane wave displacement for the analytic model (left) and the FE simulations (right) 22.5 μs after the array was pulsed.
(Color online) Angular dependence of the center frequency of the wave-front shown in Fig. 5 .
(Color online) Experimental excitation pulse.
Diagram of the experimental setup.
(Color online) Experimental data showing the angular dependence of the center frequency of wave-front.
FE model geometry.
(Color online) Example time domain signal from the FE model.
(Color online) Normalized Fourier magnitude spectra of the scattered signal obtained from FE simulations. The dashed line represents the theoretical values from Eq. (10) . The overplotted circle represents the experimental data point.
(Color online) Experimental signal after it has been integrated.
Article metrics loading...
Full text loading...