By IONTOF GmbH
Ink Line Cossing. The analysis of different inks on paper can be of great value. Especially if it is necessary to determine e. g. which signature on an important document was applied first or whether parts of a document have been changed after the document was signed. Different inks normally show different characteristic SIMS signals. If the signatures overlap TOF-SIMS imaging can determine the sequence of application. Most paper surfaces are treated to obtain special surface properties. The treatment results in different lateral distributions of certain organic and inorganic surface species. These surface modifications can be investigated using TOF-SIMS.
