Dielectric dependence of field-induced interspherical force

The influence of the dielectric properties of spheres on the field-induced interspherical force is reported. We found that a higher dielectric constant gives rise to stronger interaction forces between dielectric spheres in a pair of barium titanate spheres at the Curie temperature where the abnormal dielectric property exists. The experiment indicates that, at the Curie temperature, there is an obvious peak in the interaction force due solely to the changes in the dielectric constant. In addition to the sphere's dielectric property, the dielectric property of the surrounding medium is a critical parameter associated with the interaction force between dielectric spheres. In addition, the interaction force is dependent on the frequency of the electric field.