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Here are a few examples of my work.  The information has been edited to protect proprietary information.

Overview of Piezopump Performance - a State of the Art (2007) Snapshot

 

        Piezopump Overview

       Ultrasound Transducer Design and Specification

               A 40 kHz Therapeutic Ultrasound Applicator Head

               A Semi-formal Transducer Specification

       Multi-element Transducer Handpiece

               Handpiece

Comments Regarding my Piezoelectric Device Design and Analysis Work:

At various times in my career, I have become involved with designing, testing and computer modeling various devices that employ piezoelectric materials. This started with my ultrasound engineering work at ATL (now Phillips Ulrasound), continued with PVDF membrane hydrophone work at NTR Systems, Inc. and, more recently, involved designing, analyzing and testing various micro-pump devices of the piezo-pump type.

 

I have used finite element analysis (FEA - flexPDE) to perform a variety of numerical experiments in order to determine the amplitude of piezoelectric membrane displacement under the influence of various applied voltage potentials, as a function of disc mounting method and as a function of "dead space" in the internal pump chambers.

 

I have also designed electronic driver circuits to excite piezo devices into the desired "action". Some of these piezoelectric driver circuits were embedded in commercially manufactured medical ultrasound systems.  Others were used to drive piezo-pump devices.

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