Title :
Slider Dynamics With Adhesive Force in Near-Field Recording
Author :
Wang, H.C. ; Huang, M.S. ; Liu, T.S.
Author_Institution :
Dept. of Mech. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
A near-field optical disk drive uses near-field optics to read/write disk data at a flying height of about 50 nm. Effects of interfacial adhesive forces, including van der Waals forces and electrostatic forces, become more evident during ultralow flying. However, the pickup head-flying-height variation is affected by the suspension, disk flutter, and air flow between the flying head and disk. An analysis model consisting of a simplified suspension and an air-bearing model with springs and dampers in three directions (focusing, pitching, and rolling) is used to simulate the dynamic behavior of the flying head. This study proposes an improved method for measuring the slider´s flying-height variation. Simulation results with and without interfacial adhesive forces are compared
Keywords :
adhesion; damping; disc drives; machine bearings; optical disc storage; suspensions (mechanical components); van der Waals forces; air flow; air-bearing model; disk flutter; electrostatic forces; flying head dynamics; flying height; focusing direction; interfacial adhesive force; near-field optical disk drive; near-field recording; optical storage systems; pickup head dynamics; pitching direction; read-write head system; rolling direction; slider dynamics; spring-damper system; suspension; ultralow flying; van der Waals forces; Damping; Disk drives; Disk recording; Electrostatics; Equations; Magnetic heads; Optical devices; Optical recording; Shock absorbers; Springs; Adhesive force; electrostatic force; flying height; near-field recording; van der Waals force;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888416
