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헤드/디스크 인터페이스 내에서 오염 입자의 거동에 관한 수치적 연구
박희성,황정호,좌성훈,Park, Hee-Sung,Hwang, Jung-Ho,Choa, Sung-Hoon 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.3
Microcontamination caused by particle deposition on the head disk interface threatens the reliability of hard disk drive. Design of slider rail to control contamination becomes an important issue in magnetic recording. In this paper, how particles adhere to the slider and the disk is examined. To investigate accumulation mechanism of the particles, trajectory of the particles in a slider/disk interface is simulated with considering various forces including drag force, gravitational force, Saffman lift force, and electrostatic force. It is found that the charged particles can easily adhere to the slider or disk surface, if an electric field exists between the slider and the disk. It is supposed that the vertical motion of the particles should be related with not only Saffman force but also electrostatic force.