Novel multiscale modeling and its application to integrated head disk interface simulation

2005 ◽  
Vol 97 (10) ◽  
pp. 10P310 ◽  
Author(s):  
Qian Guo ◽  
Haigang Chen ◽  
Woo Tae Kim ◽  
Myung S. Jhon
Keyword(s):  
Multiscale Modeling ◽  
Head Disk Interface ◽  
Disk Interface

scholarly journals Multiscale modeling of organic molecules contamination in head-disk interface under high thermal stress

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 056514
Author(s):  
Wonyup Song ◽  
Pil Seung Chung ◽  
Lorenz T. Bielger ◽  
Myung S. Jhon
Keyword(s):  
Thermal Stress ◽  
Multiscale Modeling ◽  
Organic Molecules ◽  
Head Disk Interface ◽  
Disk Interface

scholarly journals A Description of Multiscale Modeling for the Head-Disk Interface Focusing on Bottom-Level Lubricant and Carbon Overcoat Models

2013 ◽  
Vol 2013 ◽  
pp. 1-27 ◽  
Author(s):  
Myung S. Jhon ◽  
Pil Seung Chung ◽  
Robert L. Smith ◽  
Lorenz T. Biegler
Keyword(s):  
Multiscale Modeling ◽  
Degrees Of Freedom ◽  
Dynamic Properties ◽  
Molecular Architecture ◽  
Head Disk Interface ◽  
Carbon Overcoat ◽  
Modeling Tools ◽  
Molecular Conformations ◽  
Disk Interface ◽  
Modeling Methodology

The challenges in designing future head disk interface (HDI) demand efficient theoretical modeling tools with flexibility in investigating various combinations of perfluoropolyether (PFPE) and carbon overcoat (COC) materials. For broad range of time and length scales, we developed multiscale/multiphysical modeling approach, which can bring paradigm-shifting improvements in advanced HDI design. In this paper, we introduce our multiscale modeling methodology with an effective strategic framework for the HDI system. Our multiscale methodology in this paper adopts a bottom to top approach beginning with the high-resolution modeling, which describes the intramolecular/intermolecular PFPE-COC degrees of freedom governing the functional oligomeric molecular conformations on the carbon surfaces. By introducing methodology for integrating atomistic/molecular/mesoscale levels via coarse-graining procedures, we investigated static and dynamic properties of PFPE-COC combinations with various molecular architectures. By bridging the atomistic and molecular scales, we are able to systematically incorporate first-principle physics into molecular models, thereby demonstrating a pathway for designing materials based on molecular architecture. We also discussed future materials (e.g., graphene for COC, star-like PFPEs) and systems (e.g., heat-assisted magnetic recording (HAMR)) with higher scale modeling methodology, which enables the incorporation of molecular/mesoscale information into the continuum scale models.

Multiscale Modeling of Head Disk Interface

2010 ◽  
Vol 46 (6) ◽  
pp. 2401-2404 ◽  
Author(s):  
Dehee Kim ◽  
Pil Seung Chung ◽  
Parag Jain ◽  
Sesha Hari Vemuri ◽  
Myung S. Jhon
Keyword(s):  
Multiscale Modeling ◽  
Head Disk Interface ◽  
Disk Interface

Hierarchical Multiscale Modeling Method for Head/Disk Interface

2011 ◽  
Vol 47 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Myung S. Jhon ◽  
Robert Smith ◽  
Sesha Hari Vemuri ◽  
Pil Seung Chung ◽  
Dehee Kim ◽  
...  
Keyword(s):  
Multiscale Modeling ◽  
Modeling Method ◽  
Head Disk Interface ◽  
Disk Interface ◽  
Hierarchical Multiscale

Effect of media overcoat on van der Waals interaction at the head–disk interface

2005 ◽  
Vol 97 (12) ◽  
pp. 126106 ◽  
Author(s):  
Raymond R. Dagastine ◽  
Lee R. White ◽  
Paul M. Jones ◽  
Yiao-Tee Hsia
Keyword(s):  
Van Der Waals ◽  
Van Der Waals Interaction ◽  
Head Disk Interface ◽  
Disk Interface

Head–Disk Interface Materials Issues in Heat-Assisted Magnetic Recording

2014 ◽  
Vol 50 (3) ◽  
pp. 137-143 ◽  
Author(s):  
Bruno Marchon ◽  
Xing-Cai Guo ◽  
Bala Krishna Pathem ◽  
Franck Rose ◽  
Qing Dai ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Head Disk Interface ◽  
Heat Assisted Magnetic Recording ◽  
Disk Interface ◽  
Interface Materials

Air-Bearing Design Towards Super Stable Head-Disk Interface

2006 ◽  
Author(s):  
Bo Liu ◽  
MingSheng Zhang ◽  
Yijun Man ◽  
Shengkai Yu ◽  
Gonzaga Leonard ◽  
...  
Keyword(s):  
Air Bearing ◽  
Head Disk Interface ◽  
Disk Interface ◽  
Bearing Design
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