Background—The electric field applied to the heart during defibrillation causes mechanical forces (electrostriction), and as a result the heart deforms. This paper analyses the physical origin of the deformation, and how significant it is. Methods—We represent the heart as an anisotropic cylinder. This simple geometry allows us to obtain analytical solutions for the potential, current density, ...

Electrostriction Is the strain response of a dlelectric material proportional to the square of an applled electric field. Thls effect Is related to 1he straindependence of 1he dlelectric function. The strain signal observed using optical inlerlerometry is a superposition of true electrostriction and other effects llke electrostalie lorces and thennal stresses. Therelore, ~Is necessary to have a...

2014 The deformation of liquid crystalline blue phases BPI and BPII under the influence of a weak electric field is studied for systems with negative dielectric anisotropy. For the initially cubic structures of these materials, the interplanar spacings in the field direction were found to increase or to decrease in the field, depending on the orientation of the unit cell. In this paper, Kossel ...

Hydration shells around proteins in solution are on average denser than bulk water. Variations in enthalpy are observed during hydration/dehydration of proteins. To explain consistently those phenomena, a common mechanism-electrostriction-underlying the mechanical and contributing to thermal effects is proposed. The mean mass density of the hydration shell of lysozyme derived from the neutron a...

The process of interaction between circularly polarized coherent transverse phonons and slow electrokinetic waves in the centrosymmetric crystal placed in a longitulinal magnetic field and possessing strong strain dependence of the dielectric constant caused by the electrostriction is considered. The cut-off system of equations for the process of nonlinear four-wave interaction in crystal with ...

Solvation in 1-ethyl-3-methylmidazolium chloride and in 1-ethyl-3-methylimidazolium hexafluorophosphate near equilibrium is investigated via molecular dynamics computer simulations with diatomic and benzenelike molecules employed as probe solutes. It is found that electrostriction plays an important role in both solvation structure and free energetics. The angular and radial distributions of ca...

We investigate the generation of acoustic phonons from electrostriction of optical waves in small core waveguides. We specifically consider simple step-index strip waveguides composed of silica or silicon in air, with sub-micron lateral dimensions. Such waveguides support one or a few optical modes, but a rich spectrum of acoustic phonons that becomes densely populated as the phonon frequency i...