Tasks and aims
The Department Surface Metrology conducts industry-related research and development on tactile and optical surface texture measurement methods with the aim of being able to use optical measuring microscopes to use for roughness measurements in the future. In addition, new calibration standards based on silicon crystals and new measurement methods using micro-electro-mechanical systems (MEMS) are being developed.
The department is responsible for the calibration
- of roughness standards and depth setting standards up to a depth of 5 mm
- the layer thickness
- of hardness reference plates and
- the bending stiffness of AFM cantilevers and reference springs.
The department
- participates in the development of standards and guidelines for surface metrology, both at the international level in ISO/TC 213 and IMEKO and in national committees of DIN, VDI and DKD
- conducts and supports the development of standards and test specimens in the field of surface metrology, i.e. for tactile, optical and atomic force microscopy methods as well as for hardness and coating thickness metrology
- is active in the field of research and development of new measuring instruments and measuring methods as well as algorithms for the analysis of data and the modelling of measuring methods.
Research
- Mono-atomic step-height standards
Processing procedure and measurement capabilities on mono-atomic steps on otherwise atomically smooth Si surfaces.
Scientific news
optical roughness metrologyDevelopment of guidelines for the configuration of optical surface measuring instruments for the measurement of roughness
- Tactile Micro-Electro-Mechanical Systems (MEMS)
Development of measurement methods for measuring the dynamic mechanical characteristics of surfaces.
- Software developement for roughness parameter determination
- Development of software for determination of the roughness parameters from surface measurements.
News
Development of a New Probetip Characterizer
In cooperation with Department 5.2 Dimensional Nanometrology a material measure of silicon with grooves of very sharp rectangular edges has been developed to measure the tip radius of tactile probes. Radius and shape of probe tips can either be determined by the tip's entrance depth into the grooves of varying width or by analysing the transfer characteristics of the edge transitions.
