(100)-Textured KNN-based thick film with enhanced piezoelectric property for intravascular ultrasound imaging

Zhu, B, Zhang, Z, Ma, T, Yang, X, Li, Y, Shung, K and Zhou, Q 2015, '(100)-Textured KNN-based thick film with enhanced piezoelectric property for intravascular ultrasound imaging', Applied Physics Letters, vol. 106, no. 17, 173504, pp. 173504-1-173504-4.


Document type: Journal Article
Collection: Journal Articles

Title (100)-Textured KNN-based thick film with enhanced piezoelectric property for intravascular ultrasound imaging
Author(s) Zhu, B
Zhang, Z
Ma, T
Yang, X
Li, Y
Shung, K
Zhou, Q
Year 2015
Journal name Applied Physics Letters
Volume number 106
Issue number 17
Article Number 173504
Start page 173504-1
End page 173504-4
Total pages 4
Publisher AIP Publishing LLC
Abstract Using tape-casting technology, 35 mu m free-standing (100)-textured Li doped KNN (KNLN) thick film was prepared by employing NaNbO3 (NN) as template. It exhibited similar piezoelectric behavior to lead containing materials: a longitudinal piezoelectric coefficient (d(33)) of similar to 150 pm/V and an electromechanical coupling coefficient (k(t)) of 0.44. Based on this thick film, a 52 MHz side-looking miniature transducer with a bandwidth of 61.5% at -6 dB was built for Intravascular ultrasound (IVUS) imaging. In comparison with 40 MHz PMN-PT single crystal transducer, the rabbit aorta image had better resolution and higher noise-to-signal ratio, indicating that lead-free (100)-textured KNLN thick film may be suitable for IVUS (>50 MHz) imaging.
Subject Electrical and Electronic Engineering not elsewhere classified
Materials Engineering not elsewhere classified
Nanotechnology not elsewhere classified
DOI - identifier 10.1063/1.4919387
Copyright notice © 2015 AIP Publishing LLC
ISSN 0003-6951
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