Monte Carlo simulations of air shielding effect on lubricant transfer at the head disk interface

2009 ◽  
Vol 94 (24) ◽  
pp. 243112 ◽  
Author(s):  
H. Kubotera ◽  
T. Imamura
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Shielding Effect ◽  
Head Disk Interface ◽  
Lubricant Transfer ◽  
Disk Interface

Molecular Dynamics Simulation of Lubricant Transfer at Head–Disk Interface

2018 ◽  
Vol 2018 (0) ◽  
pp. S1610003
Author(s):  
Kento KAWAI ◽  
Sho WASHIO ◽  
Takayuki KOBAYASHI ◽  
Hedong ZHANG ◽  
Kenji FUKUZAWA ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Head Disk Interface ◽  
Lubricant Transfer ◽  
Disk Interface

Modeling of Amorphous Carbon Overcoat for Investigation of Lubricant Transfer at the Head-Disk Interface

2014 ◽  
Author(s):  
Young Woo Seo ◽  
Frank E. Talke
Keyword(s):  
Hard Disk Drives ◽  
Intermolecular Forces ◽  
Realistic Model ◽  
Coarse Grained ◽  
Attractive Potential ◽  
Head Disk Interface ◽  
Carbon Overcoat ◽  
Lubricant Transfer ◽  
Disk Interface ◽  
Dynamics Simulations

In current hard disk drives, the spacing between the slider and the disk is reduced to the order of 1–2 nm. At such a narrow spacing, intermolecular forces at the head-disk interface play an important role in achieving a stable slider-disk interface. Even in the absence of actual head-disk contact, lubricant transfer between a slider and a disk may occur. Transferred lubricant can change the flying characteristics of the slider in subsequent read-write operations. It is therefore apparent that lubricant transfer at the head-disk interface is undesirable. In this paper, molecular dynamics simulations were performed to investigate lubricant transfer between a slider and a disk. A so-called coarse-grained bead spring (CGBS) model was implemented. In this model, the Lennard-Jones potential, the short-range polar attractive potential, and the finitely extensible nonlinear elastic potential functions were used to describe the intermolecular interactions at the head-disk interface. Also, in order to develop a realistic model of the carbon overcoat, different modeling approaches are discussed, including the use of rigid coarse-grained beads and a 3-body Tersoff potential function.

scholarly journals Investigation of lubricant transfer and distribution at head/disk interface in air-helium gas mixtures

Friction ◽  
2018 ◽  
Vol 7 (6) ◽  
pp. 564-571
Author(s):  
Zhengqiang Tang ◽  
Dongdong Zhou ◽  
Tong Jia ◽  
Deng Pan ◽  
Chuanwei Zhang
Keyword(s):  
Gas Mixtures ◽  
Head Disk Interface ◽  
Lubricant Transfer ◽  
Disk Interface ◽  
Helium Gas

Humidity effects on lubricant transfer in the head-disk interface of a hard disk drive

2009 ◽  
Vol 105 (7) ◽  
pp. 07B704 ◽  
Author(s):  
Sang Hoon Kim ◽  
Qing Dai ◽  
Bruno Marchon ◽  
Karl Flechsig
Keyword(s):  
Hard Disk Drive ◽  
Hard Disk ◽  
Disk Drive ◽  
Head Disk Interface ◽  
Lubricant Transfer ◽  
Disk Interface ◽  
Humidity Effects

Molecular Dynamics Simulation of Lubricant Transfer at the Head-Disk Interface

2014 ◽  
Vol 50 (11) ◽  
pp. 1-4 ◽  
Author(s):  
Young Woo Seo ◽  
Deng Pan ◽  
Andrey Ovcharenko ◽  
Min Yang ◽  
Frank E. Talke
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Head Disk Interface ◽  
Lubricant Transfer ◽  
Disk Interface
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