Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

PIN-PMN-PT Single Crystal 1-3 Composite-based 20 MHz Ultrasound Phased Array

Version 1 : Received: 1 February 2019 / Approved: 4 February 2019 / Online: 4 February 2019 (12:01:44 CET)

How to cite: Zhang, T.; Wu, D.; Ou-Yang, J.; Yang, X.; Zhu, B. PIN-PMN-PT Single Crystal 1-3 Composite-based 20 MHz Ultrasound Phased Array. Preprints 2019, 2019020033 (doi: 10.20944/preprints201902.0033.v1). Zhang, T.; Wu, D.; Ou-Yang, J.; Yang, X.; Zhu, B. PIN-PMN-PT Single Crystal 1-3 Composite-based 20 MHz Ultrasound Phased Array. Preprints 2019, 2019020033 (doi: 10.20944/preprints201902.0033.v1).

Abstract

Based on a modified dice-and-fill technique, a PIN-PMN-PT single crystal 1-3 composite with the kerf of 12 μm and pitch of 50 μm was prepared. The as-made piezoelectric composite material behaved with high piezoelectric constant (d33 = 1500 pC/N), high electromechanical coefficient (kt = 0.81), and low acoustic impedance (16.2 Mrayls). Using lithography and flexible circuit method, a 48-element phased array was successfully fabricated from such a piezoelectric composite. The array element was measured to have a central frequency of 20 MHz and a fractional bandwidth of approximately 77% at −6 dB. Of particular significance was that this PIN-PMN-PT single crystal 1-3 composite-based phased array exhibits a superior insertion loss compared with PMN-PT single crystal and PZT-5H-based 20 MHz phased arrays. The focusing and steering capabilities of the obtained phased array were demonstrated theoretically and experimentally. These promising results indicate that the PIN-PMN-PT single crystal 1-3 composite-based high frequency phased array is a good candidate for ultrasound imaging applications.

Subject Areas

PIN-PMN-PT; 1-3 composite; high frequency; phased array

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