The Raman microscopy allows for an analysis of the chemical paper structure with a spatial resolution of up to 500 nm. With the PTS’ evaluation software, the scattering process of paper ingredients across the paper surface and the paper cross-sectional distribution are visually evaluated in colour-coded chemical images and further on quantitatively assessed.

The new measuring technique is already being used by PTS to work on scientific and application-relevant questions for the paper industry. Examples are the coating analysis, the studies on the correlation of distributions of sizing and impregnating agents in the axial direction with strength properties, and the distribution of chemical modifications onto the individual cellulosic fibres. The Raman-Chemical-Imaging is also used for the analysis of historical documents and works of art on paper. The spectroscopic findings can help art scholars and criminologists determine the identity, origin and subsequently the authenticity of documents and works of art.

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This article is an extract from the issue “Sprungbrett Informationstechnik” (“Stepping Stone Communication Technology”) of the Dresden Transfer Letter. For the past 25 years, on-going transfer priorities of Dresden-based researching businesses and scientific institutions have regularly been published there. The aim is to make excellent research results accessible for the public, i.e. in practical application or during the implementation process.

By publishing innovative research and development results, editors of the Dresden Transfer Letter (TU Dresden, TechnologieZentrumDresden, GWT-TUD and the Chamber of Industry and Commerce Dresden) would like to contribute to a successful exploitation.