Kiyomi Yamane

Novel laser-assisted micro levitation mechanism for magneto-optical recording

This paper proposes and analyzes a novel laser-assisted micro levitation mechanism utilizing thermal creep flow which occurs only in regions where the spacing is small and temperature gradients exist along the boundary walls. The basic configuration of the mechanism is similar to the laser-assisted magneto-optical recording or near field recording system. A circular plate with a radius of 1 mm, whose temperature linearly decreases with increasing radius and whose temperature ratio T/sub W center//T/sub 0/ is 1.2, has a load-carrying capacity of about 3 mN when the spacing between the floating and fixed plates is 0.1 /spl mu/m.

DEFORMATION AND STABILITY ANALYSIS OF ULTRA-THIN LUBRICANT FILMS BY THE LONG WAVE EQUATION (ANALYSIS CONSIDERING THE VAN DER WAALS FORCE AND GAS PRESSURE AT THE LIQUID SURFACE)

To examine deformations of ultra-thin but continuum liquid film, the long wave theory was employed, which is the time-evolution equation for the shape and deformation of the thin liquid film and includes the surface tension and surface forces such as the van der Waals (vdW) force. By solving the linearized long wave equation considering the vdW pressure and gas pressures at the lubricant surface, deformations of the ultra-thin lubricant film caused by air pressure were obtained. Stability/instability of the liquid surface was analyzed as the growth and decay problem of the infinitesimal deformation of the liquid surface.Copyright

Mathematical modeling and stability criteria for ultra-thin layered gas-liquid interface

To examine behaviors of ultra-thin but continuum liquid film, the long wave theory was employed, which is the time-evolution equation for the shape of the thin liquid film and includes the surface tension and surface forces at boundaries such as the van der Waals force. Stability/ instability of the liquid surface can be analyzed as growth and decay problem of infinitesimal deformations of the liquid surface. The van der Waals force from neighboring slider may cause instabilities of the liquid surface, whereas the van der Waals force from the disk and the surface tension of the gas-liquid interface stabilize the disturbances.

Deformation Characteristics of the Ultrathin Liquid Film Surface Considering the Effects of Polar Endgroups

To examine deformations of ultra-thin but continuum liquid film, the long wave theory was employed. The long wave theory uses the time-evolution equation for the shape and deformation of the thin liquid film and includes the surface tensions and surface forces such as the van der Waals (vdW) force. By numerically solving the time-dependent long wave equation, deformations of the ultra-thin lubricant film considering the vdW pressure with initial/boundary configurations of the liquid surfaces were obtained.Copyright