Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session M07: Functionality through Nonlinearity in Metamaterials
8:00 AM–11:00 AM,
Wednesday, March 8, 2023
Room: Room 130
Sponsoring
Unit:
DSOFT
Chair: Shravan Pradeep, University of Pennsylvania; David Melancon, Ecole Polytechnique de Montreal
Abstract: M07.00008 : Symmetry Breaking via Buckling in a Soft Piezoelectric Phononic Crystal*
9:48 AM–10:00 AM
Presenter:
Alison Root
(Princeton University)
Authors:
Alison Root
(Princeton University)
Tejas Dethe
(Princeton University)
Andrej Kosmrlj
(Princeton)
We simulated compression of a soft PPC using the arc-length method to investigate large, nonlinear deformations. The simulations explore the relationship between the symmetry group of the crystal, the group of the electric field caused by the piezoelectric response, and the properties of the piezoelectric modulus itself. We also explore the inverse problem, attempting to generate different buckled crystals by varying the piezoelectric modulus and the applied electric field instead of applying a force to directly compress the crystal. The various buckling geometries cause distinct phonon propagation properties due to the changed symmetry of the crystal.
*This work was supported by NSF via the CAREER Award DMR-1752100 and Princeton's MRSEC DMR-2011750.
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