content_image/366532.jpg content_image/366533.jpg content_image/366534.jpg content_image/366535.jpg
has 21 nonzero components: 

<img src='content_image/366532.jpg'>

In this work, we do not consider the terms with b$_{ijkl}$ , e$_{ijkl}$ , and g$_{ijk}$ coefficients although it might be done without difficulties. 

Using the equations (3)-(5) we derive the equations of motion for a dielectric nanoswitch. 

Here we consider a cantilever switch which may be presented as a Euler-Bernoulli or Timoshenko beam or 2-D narrow plate (Fig. 1). The load applied to the free edge of the cantilever simulates the case of nonuniform strain. 

## III. EULER-BERNOULLI BEAM MODEL 

Within the framework of the Euler-Bernoulli model, the displacement can be written as 

<img src='content_image/366533.jpg'>

Hence, based on the equations (6), the strains are equal to 

<img src='content_image/366534.jpg'>

We assume that the electric field acts only in z − direction. Then, from (5) we can express E$_{z}$ as 

<img src='content_image/366535.jpg'>

