The electrostriction of composites consisting of dielectric particles embedded in a gel or elastomer is discussed. It is shown that when these particles are organized by a uniaxial field before gelation, the resulting field-structured composites are expected to exhibit enhanced electrostriction” in a uniform field applied along the same axis as the structuring field. The associated stresses mig...

A microscopic model is employed to relate the dielectric tensor to the microstructure of isotropic amorphous or cubic crystalline materials. Electrostriction is characterized by dielectric parameters that describe how the dielectric tensor varies with deformation and the resulting change in the microstructure. These dielectric parameters are obtained for small deformations, and expressed in ter...

We investigate the electrostrictive response across a ferroelectric phase transition from first-principles calculations and show that $M$, field-induced tensor, controlling amplitude of electric-field induced strain, can be made arbitrarily large through strain engineering. take as case study epitaxial strain-induced para- to ferroelectricity ${\mathrm{KTaO}}_{3}$. magnitude electrostriction di...

All dielectric materials have electroactivity, that is, the ability to changing their dimension or shape in response an applied electric field. The electroactive polymer (EAP) and its nanocomposites are particularly interesting for applications range from actuators sensors generators, due low moduli, high strain capabilities ease of processing at cost customizable electromechanical coupling pro...

We develop a thermodynamic model of electrostriction for elastic dielectrics capable of large deformation. The model reproduces the classical equations of state for dielectrics at small deformation, but shows that some electrostrictive effects negligible at small deformation may become pronounced at large deformation. The model is then specialized to account for recent experiments with an elast...

A microscopic theory is presented for piezoelectricity, electrostriction, and pyroelectricity in molecular crystals. The required coefficients are derived by combining a theoretical treatment of the dependence of molecular dipole moments on molecular displacement and a generalized elastic theory for internal strain.