Tapping effect on friction between slider and disk

Lizhi Su, Junguo Xu, Masayuki Kurita, Koji Kato, Koshi Adachi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The effect of tapping on friction between slider and disk in a hard-disk drive was investigated by using a model active slider with a piezo-actuator. It was found that the tapping can reduce friction, especially when the disk is smooth and the load is light. It was also found that a certain vibration amplitude is necessary to reduce friction significantly. In addition, the resonant frequency of the piezo-actuator was found to shift to higher values at higher suspension load. This frequency-shift is considered to be an important factor in optimizing the drive frequency of the actuator.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalTribology Letters
Issue number2
Publication statusPublished - 2003 Aug


  • Active slider
  • Frequency shift
  • Friction
  • Tapping


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