Tunable electrical Bragg band gaps in piezoelectric plates

Charles Croënne (1, 2) , Clement Vasseur (3) , Jerome O. Vasseur (1) , Bertrand Dubus (1) , Claude Prevot , Mai Pham Thi (4) , Anne-Christine Hladky (1, 2)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 ACOUSTIQUE - IEMN - Acoustique - IEMN
3 LAUM - Laboratoire d'Acoustique de l'Université du Mans
4 Thales research and technology, ceramic and packaging department

In this paper, a piezoelectric plate poled along its thickness is considered. A periodic grating of electrodes is deposited on its top and bottom surfaces. An analytical model is developed considering wave propagation along the length of the plate. The device exhibits an electrical Bragg band gap that is open or closed, depending on the electrical boundary conditions applied on the electrodes. The analytical model is validated by comparison with the finite element method. Fabrication of the device and first measurements are also presented.

Domaines: Sciences de l'ingénieur [physics]

Charles Croënne, Clement Vasseur, Jerome O. Vasseur, Bertrand Dubus, Claude Prevot, et al.. Tunable electrical Bragg band gaps in piezoelectric plates. 2017 11th International Congress on Engineered Materials Platforms for Novel Wave Phenomena (Metamaterials), Aug 2017, Marseille, France. pp.145-147, ⟨10.1109/MetaMaterials.2017.8107869⟩. ⟨hal-03299379⟩