SaM - Piezoelectric Effect

Remeber:

• The Piezoelectric Effect formula is defined as:$\{\begin{array}{lc}\vec{D}=\overline{\overline{{\epsilon }^T}}\vec{E}+\overline{\overline{d}}\overline{\overline{T}}& \text{(direct piezoelectric effect)}\\ \overline{\overline{S}}=\overline{\overline{s}}\overline{\overline{T}}+\overline{\overline{d^T}}\vec{E}& \text{(inverse piezoelectric effect)}\end{array}$
• The most common piezoelectric material we have seen is the Quartz.
• To understand these coefficients here are some links to other lectures:
  • Definition of Stress and Strain
  • Hooke’s Law $\left(\overline{\overline{S}}=\overline{\overline{s}}\overline{\overline{T}},\overline{\overline{T}}=\overline{\overline{c}}\overline{\overline{S}}\right)$
  • Electric Permittivity
  • Piezoelectric Effect in Details.IMPORTANTE
  • Complete Piezoelectric Device (Actuator + Sensor)

---

Memory Card

---