Design and fabrication of a piezoelectric stack actuator for use in a needle-free jet injector
Name
1057286752-MIT.pdf
Description
Full printable version
Size
7.63 MB
Format
Adobe PDF
Checksum (MD5)
32ddf2affac44447d1d31da87b211a7f
Author(s)
Briggs, Randall (Randall Miller)
Advisor(s)
Ian W. Hunter.
Date Issued
2018
Publisher
Massachusetts Institute of Technology
Abstract
This thesis presents the design of a piezoelectric ceramic stack actuator for use with needle-free jet injection (NFJI) devices. While NFJI devices have been in use for over 60 years only recently have they been electronically actuated which allows for precise control of jet velocity, penetration depth, and injection volume. Most NFJI devices have been designed for fluids with a similar viscosity to water. Here we design an actuator for use with high viscosity fluids and non-newtonian fluids. The piezoelectric stack actuator presented in this work has been designed to deliver injection volumes of up to 30 microliters while pressurizing the fluid to over 40 MPa in order to achieve the necessary fluid velocities for injection. We have further presented all the methods used in order to fabricate functional lead zirconate titanate (PZT) piezoelectric ceramic discs. These discs are the basic building blocks for assembling a full stack actuator for NFJI.
Description
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 71-72).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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