Instability of Viscoelastic Liquid Sheets in a Transverse Electric Field

Instability of stationary liquid sheets.

The rupture of a 3D stationary free liquid film under the competing effects of surface tension and van der Waals forces is studied as a linearized stability problem in a purely irrotational analysis utilizing the dissipation method. The results of the foregoing analysis are compared with a 2D long-wave approximation that has given rise to an extensive literature on the rupture problem. The irro...

Edge Instability of a Liquid Metal Sheet in a Transverse High-frequency Ac Magnetic Field

Liquid Crystals in Electric Field

Phase transitions occur in various systems in electric field. To treat such problems we need to construct a Ginzburg-Landau free energy including electrostatic interactions and electric field effects under each given boundary condition.1) The gross variables include the order parameter ψ, the polarization p, and the charge density ρ. (Note ψ = p in ferroelectric systems.) In this letter we pres...

Instability of a transverse liquid rivulet on an inclined plane

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Superlattice properties of semiconductor nanohelices in a transverse electric field

A charge carrier confined in a quasi-one-dimensional semiconductor helical nanostructure in the presence of an electric field normal to the axis of the helix is subjected to a periodic potential proportional to the strength of the field and the helix radius. As a result, electronic properties of such nanohelices are similar to those of semiconductor superlattices with parameters controlled by t...