Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Measurements of Particles Size Distribution and Average Particle Charge in Operating a Bard Disk Drive

하드디스크 드라이브 동작 시 발생하는 입자 크기분포와 입자당 평균 대전량 측정

  • 이재호 (연세대학교 대학원 기계공학과) ;
  • 박동호 (연세대학교 대학원 기계공학과) ;
  • 이대영 (연세대학교 대학원 기계공학과) ;
  • 윤기영 (연세대학교 대학원 기계공학과) ;
  • 황정호 (연세대학교 기계공학과)
  • Published : 2005.07.01
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Abstract

As the flying height of a slider in a hard disk drive decreases, the slider and disk are more likely to come in contact and generate contamination particles. Since particle contamination can cause serious problems including thermal asperity, it must be prevented to increase storage capacity. When particles are generated in a HDD, particles can be charged and have a few number of elementary charges. In this paper, the size distribution of particles and electrical current due to particle according to the disk rotational speed were measured. Also, the average number of elementary charges was calculated from experimental data. SEM images of particles were obtained by using a particle sampler designed in our laboratory.

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References

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