Analysis of L/UL dynamic characteristics of femto sliders in the micro drive

In order to increase an areal density, femto slider has been used in this system nowadays. When the design parameters are changed a little due to fabrication, assembly error and operating conditions, the L/UL dynamic characteristics of femto slider can be changed greatly. This paper investigates the static air bearing characteristics of two sliders which have a different ABS. L/UL dynamic performance is examined using the numerical simulation for various design and operating parameters. For the same suspension parameters and operating conditions, L/UL dynamics show the different characteristics for different ABS system. In case of femto slider used in this simulation, the rebounding happens in a lower load speed and the simulation results shows the clearance between slider and disk become small in unloading process.