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Journal of Nanomaterials
Volume 2017 (2017), Article ID 8275139, 9 pages
https://doi.org/10.1155/2017/8275139
Research Article

Electrical Impedance Measurements of PZT Nanofiber Sensors

1Department of Mechanical Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030, USA
2Department of Electrical and Computer Engineering, University of Florida, P.O. Box 116200, Gainesville, FL 32611-6200, USA
3National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, 127 Youyu West Rd, Xi’an, Shaanxi Province 710072, China

Correspondence should be addressed to Richard Galos

Received 21 October 2016; Accepted 15 December 2016; Published 29 January 2017

Academic Editor: Xiulin Fan

Copyright © 2017 Richard Galos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electrical impedance measurements of PZT nanofiber sensors were performed using a variety of methods over a frequency spectrum ranging from DC to 1.8 GHz. The nanofibers formed by electrospinning with diameters ranging from 10 to 150 nm were collected and integrated into sensors using microfabrication techniques. Special matching circuits with ultrahigh input impedance were fabricated to produce low noise, measurable sensor outputs. Material properties including resistivity and dielectric constant are derived from the impedance measurements. The resulting material properties are also compared with those of individual nanofibers being tested using conductive AFM and Scanning Conductive Microscopy.