lubricant on steel measurement

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  • 8/17/2019 Lubricant on Steel Measurement

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    83 Pine Hill Rd. Southborough, MA 01772Phone +1.617.388.6832 Fax. +1.508.858.5473

    email: [email protected] http://www.semiconsoft.com

    Thin Film Measurement solutionSoftware, sensors, custom developmentand integration

    LUBRICANT ON STEEL MEASUREMENT

    I. SUMMARY

    Steel sample with lubricated surface was measured using MProbeVis-Micro with 40ummeasurement spot size. Measurements were done at 3 points. Dispersion of the lubricantwas represented using Cauchy approximation assuming R.I. ~ 1.43. Steel dispersion wasrepresented using standard library material. Surface of the steel has someroughness/grains that caused light scattering. Effective roughness was determined fromthe measurement.The results of the measurements are summarized in the Table I.

    Measurementpoint

    Thickness, nm(of lubricant)

    Effective roughness, nm

    1. (left side) 77 242. (right side) 129 343. (center) 147 43

    Table 1 . Results of the lubricant thickness measurement

    Fig. 1 Measured reflectance spectra at 3 points.

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    83 Pine Hill Rd. Southborough, MA 01772Phone +1.617.388.6832 Fax. +1.508.858.5473

    email: [email protected] http://www.semiconsoft.com

    Fig. 2 Measurement points location

    II. DETAILS

    Fig. 3 Point #1 measurement vs. model fit. Measured parameters: layer thickness andsurface roughness

    Point#1

    Point # 3

    Point #2

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    83 Pine Hill Rd. Southborough, MA 01772Phone +1.617.388.6832 Fax. +1.508.858.5473

    email: [email protected] http://www.semiconsoft.com

    Fig. 4 Point #2 measurement vs. model fit. Measured parameters: layer thickness andsurface roughness

    Fig. 5 Point #3 measurement vs. model fit. Measured parameters: layer thickness andsurface roughness

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    83 Pine Hill Rd. Southborough, MA 01772Phone +1.617.388.6832 Fax. +1.508.858.5473

    email: [email protected] http://www.semiconsoft.com

    Fig.6 Lubricant dispersion represented using Cauchy approximation