Crosstalk optimization of 5 MHz linear array transducer based on PZT/epoxy piezoelectric composite

Enhanced electromechanical coupling in Pb(ZrTi)O3 piezoelectric composite via poly(vinylidene fluoride‐trifluoroethylene) clamping

“…Attractively, in a PZT/P(VDF‐TrFE) sheet with 17 PZT columns with a thickness of 1.5 mm, f s and f p are 1.296 kHz and 938.07 kHz, respectively, and k t is calculated to a considerable value of 0.725, as illustrated in Figure 8F. Compared to PZT columns in literature, 6–9,27–30 the value of k t (0.725) of the PZT/P(VDF‐TrFE) piezoelectric sheet has been largely improved. Thus, the large k t corresponds to high sensitivity and transmission efficiency, which indicates this 1–3 PZT/P(VDF‐TrFE) sheet is anticipated to be applied in high‐precision energy‐transferring devices.…”

Towards ultrasound wearable technology for cardiovascular monitoring: from device development to clinical validation

“…Usually, multiple mechanical vibrations appear in the transmitted pulse, which strongly affects the final resolution of the acquired signals, particularly the axial resolution. Thus, "damping" of these undesired vibrations is necessary so that the transmitted pulse is shortened; this can be achieved by attaching a backing layer at the back of the ceramic [55,66]. The backing layer also reflects the energy back to the front surface.…”