Search Results - "Karis, T. E."

Poiseuille flow at a nanometer scale by Marchon, B, Karis, T. E

“…The spreading behavior of non-polar polymers in the nanometer thickness range is revisited. By incorporating a distance of closest approach d0 corresponding to…”
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Molecular Adhesion Model for the Bridged State of a Magnetic Recording Slider by Karis, T.E., Guo, X.-C.

“…Frictional hysteresis loops are measured with a pico-slider on typical desktop media to illustrate the bridged state with a chemisorbed perfluoropolyether…”
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A lower critical ordering transition in a diblock copolymer melt by Russell, T. P, Karis, T. E, Gallot, Y, Mayes, A. M

“…The microphase separation of a diblock copolymer melt on heating is described. This lower critical ordering transition is driven by entropic factors…”
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Spreading Profiles of Molecularly Thin Perfluoropolyether Films by Tyndall, G. W., Karis, T. E., Jhon, M. S.

“…Perfluoropolyethers (PFPEs) are widely used as lubricants on magnetic recording media. The mobility of the PFPE on the protective carbon overcoat of the media…”
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Lubricant Spin-Off from Magnetic Recording Disks by Karis, TE, Marchon, B, Flores, V, Scarpulla, M

“…As the rotation rate of magnetic recording disks increases over the next few years, lubricant spin-off from the disk surface may be significant. Lubricant…”
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Surface chemistry of NiP plated substrates by Karis, T.E., Guo, X.-C., Marinero, E., Marchon, B.

“…Circumferential texture grooves polished into NiP plated AlMg substrates promote magnetic crystal anisotropy in longitudinal recording media. Freshly textured…”
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Humidity effects in magnetic recording by Karis, T.E., Marchon, B., Carter, M.D., Fitzpatrick, P.R., Oberhauser, J.P.

“…Humidity effects in magnetic recording are reviewed. We highlight the progress made toward quantifying water adsorption on lubricated overcoats, leading up to…”
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Water Adsorption and Friction on Thin Film Magnetic Recording Disks by Karis, T. E., Tawakkul, M. A.

“…Water adsorption isotherms were measured with two different types of perfluoropolyether lubricants, Zdol 4000 and Ztetraol 2000, on thin film magnetic…”
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Spreading and dewetting in nanoscale lubrication by Karis, T. E., Kim, W. T., Jhon, M. S.

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Chemistry of magnetic recording disk surfaces with intermittent asperity contacts by Karis, T.E.

“…Since many of the newer disk drive products incorporate load/unload to avoid starting and stopping on the disk surface, a new low-velocity accelerated life…”
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Cobalt Oxalate Formation on Thin-Film Magnetic Recording Media by Karis, T.E., Guo, X.-C., Marchon, B., Raman, V., Hsiao, Y.-L.

“…Needle-like crystalline nanostructures were formed on the surface of a lubricated experimental thin-film media during exposure to elevated temperature and…”
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Rheology of the Lower Critical Ordering Transition by Karis, T. E, Russell, T. P, Gallot, Y, Mayes, A. M

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Lubricant Bonding Effects on Thin Film Disk Tribology by Karis, T. E., Tyndall, G. W., Waltman, R. J.

“…The magnetic recording industry predominantly uses Zdol to lubricate the carbon overcoat of magnetic recording disks. Zdol comprises a perfluoropolyether chain…”
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Calculation of spreading profiles for molecularly-thin films from surface energy gradients by Karis, T.E., Tyndall, G.W.

“…The one-dimensional diffusion equation is solved numerically to calculate the spreading profile of a molecularly-thin liquid on a solid surface. The…”
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Liquid Nanodroplets on Thin Film Magnetic Recording Disks by KARIS, T. E., NAYAK, U. V.

“…As magnetic recording slider size and flying height evolve to smaller dimensions, previously insignificant levels of contamination begin to play a role in…”
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Evaporation and Flow Properties of Several Hydrocarbon Oils by Karis, T. E., Nagaraj, H. S.

“…Two properties that delimit the useful temperature range of synthetic lubricating oils are the vapor pressure and viscosity. This study investigates the…”
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Surface Potential and Magnetic Recording Media Tribology by Novotny, V. J., Karis, T. E., Whitefield, R. J.

“…A Kelvin probe apparatus was developed to profile surface potential. Measurements were performed on unlubricated and lubricated carbon overcoated thin film…”
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Water Adsorption on Thin Film Media by Karis, Thomas E.

“…Disk drives experience a wide range of temperature and humidity during storage and operation. Humidity influences media tribology through the effects of…”
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An overview of rheology in the computer industry by Karis, T. E.

“…The rheological characterization of a wide variety of materials used in computer hardware is described. The materials and applications presented include liquid…”
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Glass formation from low molecular weight organic melts by Kim, Seong-Jin, Karis, T.E.

“…Glass formation from the melt of organic monomers was studied for a variety of different organic molecular structures with Tg near ambient temperature…”
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