Voltage pulsing for localized clearance measurement

  title={Voltage pulsing for localized clearance measurement},
  author={Maik Duwensee and Bernhard E. Knigge and Petra M. Baumgart and Frank E. Talke},
  journal={IEEE Transactions on Magnetics},
Mechanical clearance is a critical parameter of the head/disk interface (HDI) for sliders flying in close proximity in hard disk drives. It depends on a variety of HDI parameters, such as the air-bearing design, disk roughness, and the disk lubricant. An experimental setup was developed to determine the mechanical clearance locally at any location on the disk. Voltage pulsing is used to add an additional force component to the complex HDI equilibrium. The applied force is attractive in… CONTINUE READING