Paper is usually a low-cost mass-produced product. In special cases, however, it can also function as the substrates for works of art or historically important documents and as a result have great financial and immaterial value, thus arousing the interest of forgers.
In order to be able to answer the question “genuine or counterfeit?” however we, together with partners, utilise ultramodern spectroscopic and image analysis-based measuring procedures in addition to the well-known, classical paper analysis techniques, e.g. the microscopic detection of certain pulps or identification of mineral and chemical ingredients in paper, to narrow down the period of time in which the paper was manufactured.
- Our DOMAS image analysis system makes it possible to filter out specific wavelength-based paper markings. Art forgeries on paper can be detected quickly using non-destructive methods by assigning structures to a specific historical period.
- In co-operation with an art historian, it has been possible for us to further develop the structural analysis of paper in order to verify age determinations or to detect counterfeits and imitations.
- Using modern imaging and spectroscopic measurement methods such as IR, NIR and Raman spectroscopy, it is possible to make chemical “fingerprints” of paper that can be used for unique, precise identification and authentication of paper.
- In co-operation with the Leibniz-Laboratory for Radiometric Dating and Isotope Research at the Christian Albrecht University in Kiel, Germany, the 14C method was developed so that age determination is now possible using only a few milligrammes of the material.