On Boundary Control Problems in Slow Processes for Piezothermoelastic   Plates
  We consider a piezothermoelastic panel occupied by a material of hexagonal crystal class. We study the response when the boundary conditions vary very slowly with time and one of the bounding faces is subject to thermal exposure. We show that in some cases the temperature on the other bounding face can be controlled by the difference of electric potential between the faces. 
Adriano Montanaro