Flexural vibration of a lithium niobate piezoelectric plate with a ferroelectric inversion layer. Issue 10 (15th May 2020)

• Record Type: Journal Article
• Authors: Huang, Dejin; Yang, Jiashi
• Is Part Of: Mechanics of advanced materials and structures. Volume 27:Issue 10(2020)
• Page Start: 831
• Page End: 839
• Publication Date: 2020-05-15
• Subjects: Flexure -- piezoelectric -- plate -- vibration -- wave; Composite materials -- Mechanical properties -- Periodicals; Composite construction -- Periodicals; 620.118
• DOI: 10.1080/15376494.2018.1500664
• Languages: English
• ISSNs: 1537-6494

Abstract

Abstract: Two-dimensional equations for flexural motions of a lithium niobate piezoelectric plate are derived from three-dimensional equations. The plate has a ferroelectric inversion layer where the piezoelectric constants reverse signs. The equations show an unconventional behavior that a uniform electric field along the plate thickness can produce bending. This offers many possibilities for new designs of devices. Waves in unbounded plates are examined for the accuracy of the equations. A piezoelectric energy harvester based on such a plate is analyzed as an example of the application of the equations derived in vibrations of finite plates.