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    Design and Dynamics of Flying Height Control Slider With Piezoelectric Nanoactuator in Hard Disk Drives

    Source: Journal of Tribology:;2007:;volume( 129 ):;issue: 001::page 161
    Author:
    Jia-Yang Juang
    ,
    C. Singh Bhatia
    ,
    David B. Bogy
    DOI: 10.1115/1.2401208
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: To achieve the areal density goal in hard disk drives of 1Tbit∕in.2 the minimum physical spacing or flying height (FH) between the read/write element and disk must be reduced to ∼2nm. A brief review of several FH adjustment schemes is first presented and discussed. Previous research showed that the actuation efficiency (defined as the ratio of the FH reduction to the stroke) was low due to the significant air bearing coupling. In this paper, an air bearing surface design, Slider B, for a FH control slider with a piezoelectric nanoactuator is proposed to achieve virtually 100% efficiency and to increase dynamics stability by minimizing the nanoscale adhesion forces. A numerical study was conducted to investigate both the static and dynamic performances of the Slider B, such as uniformity of gap FH with near-zero roll over the entire disk, ultrahigh roll stiffness and damping, low nanoscale adhesion forces, uniform FH track-seeking motion, dynamic load/unload, and FH modulation. Slider B was found to exhibit an overall enhancement in performance, stability, and reliability in ultrahigh density magnetic recording.
    keyword(s): Dynamics (Mechanics) , Force , Motion , Bearings , Design , Disks , Stiffness , Damping , Nanoscale phenomena , Stress , Density AND Pressure ,
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      Design and Dynamics of Flying Height Control Slider With Piezoelectric Nanoactuator in Hard Disk Drives

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    http://yetl.yabesh.ir/yetl1/handle/yetl/136973
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    contributor authorJia-Yang Juang
    contributor authorC. Singh Bhatia
    contributor authorDavid B. Bogy
    date accessioned2017-05-09T00:26:02Z
    date available2017-05-09T00:26:02Z
    date copyrightJanuary, 2007
    date issued2007
    identifier issn0742-4787
    identifier otherJOTRE9-28746#161_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/136973
    description abstractTo achieve the areal density goal in hard disk drives of 1Tbit∕in.2 the minimum physical spacing or flying height (FH) between the read/write element and disk must be reduced to ∼2nm. A brief review of several FH adjustment schemes is first presented and discussed. Previous research showed that the actuation efficiency (defined as the ratio of the FH reduction to the stroke) was low due to the significant air bearing coupling. In this paper, an air bearing surface design, Slider B, for a FH control slider with a piezoelectric nanoactuator is proposed to achieve virtually 100% efficiency and to increase dynamics stability by minimizing the nanoscale adhesion forces. A numerical study was conducted to investigate both the static and dynamic performances of the Slider B, such as uniformity of gap FH with near-zero roll over the entire disk, ultrahigh roll stiffness and damping, low nanoscale adhesion forces, uniform FH track-seeking motion, dynamic load/unload, and FH modulation. Slider B was found to exhibit an overall enhancement in performance, stability, and reliability in ultrahigh density magnetic recording.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDesign and Dynamics of Flying Height Control Slider With Piezoelectric Nanoactuator in Hard Disk Drives
    typeJournal Paper
    journal volume129
    journal issue1
    journal titleJournal of Tribology
    identifier doi10.1115/1.2401208
    journal fristpage161
    journal lastpage170
    identifier eissn1528-8897
    keywordsDynamics (Mechanics)
    keywordsForce
    keywordsMotion
    keywordsBearings
    keywordsDesign
    keywordsDisks
    keywordsStiffness
    keywordsDamping
    keywordsNanoscale phenomena
    keywordsStress
    keywordsDensity AND Pressure
    treeJournal of Tribology:;2007:;volume( 129 ):;issue: 001
    contenttypeFulltext
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    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian