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Strain sensor Flexible Piezoelectric ZnOPaper Nanocomposite Strain

Summary: Strain sensor
Flexible Piezoelectric ZnO­Paper Nanocomposite Strain
Hemtej Gullapalli, Venkata S. M. Vemuru, Ashavani Kumar,
Andres Botello-Mendez, Robert Vajtai, Mauricio Terrones, Satish Nagarajaiah, and
Pulickel M. Ajayan*
The fabrication of a mechanically flexible, piezoelectric nanocomposite
material for strain sensing applications is reported. Nanocomposite material
consisting of zinc oxide (ZnO) nanostructures embedded in a stable matrix
of paper (cellulose fibers) is prepared by a solvothermal method. The
applicability of this material as a strain sensor is demonstrated by studying
its real-time current response under both static and dynamic mechanical
loading. The material presented highlights a novel approach to introduce
flexibility into strain sensors by embedding crystalline piezoelectric material
in a flexible cellulose-based secondary matrix.
1. Introduction
Critical infrastructures, including highways, buildings,
bridges, aircraft, ships, and pipelines, form the lifeline of
economic and industrial hubs and are sometimes subjected to
severe loading conditions due to extreme events such as


Source: Ajayan, Pulickel M. - Department of Mechanical Engineering and Materials Science, Rice University


Collections: Materials Science