Design optimisation of sub-5 nm Head-Disk Interfaces using a two-degree-of-freedom dynamic contact model with friction Academic Article

abstract

• The realisation of Tbit/in² areal densities will depend on the successful Head-Disk Interface (HDI) designs that will result in the smallest possible head media spacing. In this study, the effect of HDI roughness on flying/contact dynamics of sub-5 nm HDIs was investigated. Rough surface interfacial and dynamic contact models were used to predict time varying slider motion, from which output responses were generated through regression modelling. Provided that the input disk dynamic microwaviness is low, one could design the interface to have low roughness and area for fully flying or high roughness and area for mild, sustained contact and reduced Bouncing Vibrations (BVs).

authors

• Polycarpou, Andreas

published proceedings

• International Journal of Product Development

author list (cited authors)

• Polycarpou, A. A., & Suh, A. Y.

citation count

• 5

complete list of authors

• Polycarpou, Andreas A||Suh, Allison Y

publication date

• January 2008

publisher

• Inderscience Publishers  Publisher

published in

• International Journal of Product Development  Journal

keywords

• Adhesion
• Bouncing Vibration
• Contact Dynamics
• Design Optimisation
• Dynamic Contact Modelling
• Fhm
• Flying-height Modulation
• Friction
• Hdi Roughness
• Head-disk Interface
• Perpendicular Recording Technologies
• Recording Areal Density.
• Regression Model
• Slider Motion

Digital Object Identifier (DOI)

• 10.1504/ijpd.2008.017464

start page

• 268

end page

• 291

volume

• 5

issue

• 3/4