Paper
27 August 2015 Fabrication and qualification of roughness reference samples for industrial testing of surface roughness levels below 0.5 nm Sq
O. Faehnle, E. Langenbach, F. Zygalsky, F. Frost, R. Fechner, A. Schindler, M. Cumme, H. Biskup, C. Wünsche, R. Rascher
Author Affiliations +
Abstract
Applying reactive ion beam etching (RIBE) processes at the Leibniz Institute of Surface Modification (IOM), several reference samples to be used in industry for calibrating of roughness testing equipment have been generated with the smoothest sample featuring 0.1 nm rms Sq. Subsequently these reference samples have been measured cross-site applying atomic force microscopy (AFM), white light interferometry (WLI), Nomarski1 microscopy (NM) and scatterometry (iTIRM2) determining the appropriate range of measurable rms surface roughness for each industrial measuring device.
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O. Faehnle, E. Langenbach, F. Zygalsky, F. Frost, R. Fechner, A. Schindler, M. Cumme, H. Biskup, C. Wünsche, and R. Rascher "Fabrication and qualification of roughness reference samples for industrial testing of surface roughness levels below 0.5 nm Sq", Proc. SPIE 9575, Optical Manufacturing and Testing XI, 957512 (27 August 2015); https://doi.org/10.1117/12.2189790
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KEYWORDS
Surface roughness

Calibration

Silicon

Atomic force microscopy

Etching

Silica

Ion beams

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