Influence of disk curvature on slider attitude under operational shock conditions for a 2.5-in. hard disk drive

Geonyup Lim, Kyoung Su Park, No Cheol Park, Young Pil Park, Yonghyun Lee, Young Bae Chang, Cheol soon Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)


Recently, the number of disks in hard disk drives has increased, and the gap between the slider and disk has decreased. These changes make the contact between the ramp and disk easily. External shock and ramp–disk contact can cause change in disk curvature. Such a change in disk curvature affects the air bearing pressure between the slider and disk. However, disk curvature has not been considered in the previous research. Thus, in this study, we investigated the influence of disk curvature on slider dynamics. Disk curvature was calculated from a transient shock analysis, and was then applied to slider dynamic analysis. As a result, disk curvature reduced the shock performance, by decreasing the minimum flying height and increasing the pitch and roll angle of the slider.

Original languageEnglish
Pages (from-to)1315-1324
Number of pages10
JournalMicrosystem Technologies
Issue number6
Publication statusPublished - 2016 Jun 1


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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