Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

A study of inversion layer transducers

Estanbouli, Y. and Hayward, G. and Barbenel, J.C. (2003) A study of inversion layer transducers. 2003 IEEE Symposium on Ultrasonics . IEEE. ISBN 0-7803-7922-5

Full text not available in this repository.

Abstract

Much recent interest has been expressed regarding inversion layer piezoelectric transducers. These are multi-layered devices, incorporating a reversal in piezoelectric polarisation in the stack thickness, creating the potential for extended bandwidth and enhanced even harmonic sensitivity in thickness drive structures. The transducer properties are determined in turn by the relative dimensions of the polarised zones, in addition to the mechanical load conditions at the transducer boundaries. This work presents an evaluation of different inversion layer configurations and piezoelectric materials, using the FE code PZFLEX as a virtual prototyping tool. The influence on non-uniform piezoelectric boundaries in lithium niobate transducers is addressed. The potential for multiple piezoelectric zones is also investigated, through modelling of three and more inversion layers through the transducer thickness. The influence of backing and matching on the transducer bandwidth and sensitivity is also considered. Experimental data is provided for lithium niobate plates and piezoelectric composite transducers, with the latter geared towards the enhanced detection of second harmonic backscatter in contrast agent imaging.