TABLE I.
Parameters of Pb(In1/2Nb1/2)–Pb(Mg1/3Nb2/3)–PbTiO3 (PIN-PMN-PT) and Pb(Mg1/3Nb2/3)–PbTiO3 (PMN-PT) Linear-Array Ultrasonic Transducers.
Layer | Material | Thickness (μm) | Acoustic impedance (MRayl) |
---|---|---|---|
Single crystal | PIN-PMN-PT/PMN-PT | 291 | 32.60/36.90 [17] |
1st matching | Epoxy | 158 | 6.64 |
2nd matching | Polyurethane | 112 | 2.26 |
Backing | Elastic epoxy mixed with aluminum oxide particles | 5000 | 2.30 |