Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Vedantham Raman"'
Publikováno v:
Tribology Online, Vol 8, Iss 3, Pp 250-256 (2013)
Slider-disk contact hysteresis is investigated as a function of the Zdol bonded fraction at constant film thickness. The contact hysteresis is found to increase with the Zdol bonded fraction. AFM force-distance curves also indicate increasing work of
Externí odkaz:
https://doaj.org/article/e39e12dcb23d46158212754fa6e2d219
Autor:
Thomas Nguyen, Vedantham Raman
Publikováno v:
2018 Asia-Pacific Magnetic Recording Conference (APMRC).
The generation of smears at head-disk interfaces operating at clearances in the range from 1–2 nm represents an increasing challenge- both to component designers as well as those interested in reliable operation of magnetic recording devices over e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be9b8e39cfc6c413e2b3db8a8ed587d2
https://doi.org/10.1109/apmrc.2018.8601072
https://doi.org/10.1109/apmrc.2018.8601072
Publikováno v:
Tribology Online, Vol 8, Iss 3, Pp 250-256 (2013)
Slider-disk contact hysteresis is investigated as a function of the Zdol bonded fraction at constant film thickness. The contact hysteresis is found to increase with the Zdol bonded fraction. AFM force-distance curves also indicate increasing work of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6d1577cd4230f32817dc81786396116
https://doi.org/10.2474/trol.8.250
https://doi.org/10.2474/trol.8.250
Autor:
Paul H. Kasai, Vedantham Raman
Publikováno v:
Tribology Letters. 48:367-374
Disk-to-head lubricant transfer was found to be caused by airborne inorganic particulates. Molecular dynamics calculations elucidated a sequential process involving water molecules, inorganic alkaline halides and end-groups of Z-tetraol leading to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49e6e1a918c1177ffeda6337c22a9f09
https://doi.org/10.1007/s11249-012-0031-8
https://doi.org/10.1007/s11249-012-0031-8
Autor:
Paul H. Kasai, Vedantham Raman
Publikováno v:
Tribology Letters. 21:205-216
Hydrogen bonding interaction within a small ensemble of water molecules, that within a group of water molecules and end-groups of Z-dol and Z-tetraol, and the effect of electrolyte ionic pair such as LiCl upon these interactions were examined by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23a0d1ad4f495be2391520d1338cca78
https://doi.org/10.1007/s11249-006-9022-y
https://doi.org/10.1007/s11249-006-9022-y
The Contribution of Thin PFPE Lubricants to Slider-Disk Spacing. 3. Effect of Main Chain Flexibility
Publikováno v:
Tribology Letters. 17:239-244
We have investigated the effect of main chain flexibility of a perfluoropolyether lubricant, Zdol 4000, on dynamic slider-disk spacing. The major conclusion of this work is that increasing the Zdol chain flexibility results in a decrease in the dynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a71942eff3daa0b9a870bde4cb8f5146
https://doi.org/10.1023/b:tril.0000032450.47415.88
https://doi.org/10.1023/b:tril.0000032450.47415.88
Autor:
Vedantham Raman, Paul H. Kasai
Publikováno v:
Tribology Letters. 16:29-36
A component-level study has revealed that the durability of magnetic hard disks coated with Z-dol improved with increasing level of relative humidity, while the durability of disks coated with Z-tetraol was generally superior and not affected by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94feea915d996fba459b6f6db5eda99f
https://doi.org/10.1023/b:tril.0000009711.56586.9a
https://doi.org/10.1023/b:tril.0000009711.56586.9a
Autor:
Paul H. Kasai, Dolores C. Miller, Brian R. York, Andrew J. Kellock, Hong Deng, Qing Dai, Vedantham Raman, Michael F. Toney, Qi-Fan Xiao, Robert Waltman, Bruno Marchon, Richard L. White, B.K. Yen
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 21:1895-1904
The effect of N content on the structure and properties of rf reactively sputtered amorphous silicon nitride (a-SiNx) has been studied by Rutherford backscattering spectrometry, x-ray reflectivity, ellipsometry, and nano-indentation. The N content in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74f2240250dd8f01912f03adb0f4983c
https://doi.org/10.1116/1.1615974
https://doi.org/10.1116/1.1615974
Autor:
Paul H. Kasai, Vedantham Raman
Publikováno v:
Tribology Letters. 15:15-28
The degradation of Z-dol catalyzed by Lewis acid centers on the slider surface leads to chain scission forming one type of fragment terminated with a fluorocarbonyl end-group and the other with a trifluoromethoxy end-group. The former, in contact wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82a060eddccc158ecfbfa2a27ca131c2
https://doi.org/10.1023/a:1023455921766
https://doi.org/10.1023/a:1023455921766
Autor:
Paul H. Kasai, Vedantham Raman
Publikováno v:
Tribology Letters. 12:117-122
It has been shown earlier that addition of X1P (partially fluorinated hexaphenoxy cyclotriphosphazene) to the lubricant Z-DOL markedly increases the durability of the magnetic disk system. Its efficacy has been attributed to the strong nucleophilic p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ae332eefcdcfd088c1464c1a82d343c
https://doi.org/10.1023/a:1014041824630
https://doi.org/10.1023/a:1014041824630