Maximizing the electromomentum coupling in piezoelectric laminates Articles uri icon

publication date

  • November 2022

start page

  • 1

end page

  • 13


  • 111909


  • 254-255

International Standard Serial Number (ISSN)

  • 0020-7683

Electronic International Standard Serial Number (EISSN)

  • 1879-2146


  • Asymmetric piezoelectric composites exhibit coupling between their macroscopic linear momentum and electric field, a coupling that does not appear at the microscopic scale. This electromomentum coupling constitutes an additional knob to tailor the dynamic response of the medium, analogously to the Willis coupling in elastic composites. Here, we employ topology- and free material optimization approaches to maximize the electromomentum coupling of periodic piezoelectric laminates in the low frequency, long-wavelength limit. We find that the coupling can be enhanced by orders of magnitude, depending on the degrees of freedom in the optimization process. The optimal compositions that we find provide guidelines for the design of metamaterials with maximum electromomentum coupling, paving the way for their integration in wave control applications.


  • Materials science and engineering
  • Physics


  • willis metamaterials; gradient-based optimization; effective properties; composites; homogenization; piezoelectricity; constitutive relations; bloch-floquet waves; topology optimization