Persons at STU
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Basic information about a final thesisAdditional informationAdditional information about the final thesis follows. Click on the language link to display the information in the desired language.
|Language of final thesis:||Slovak|
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|Title of the thesis:||Study of graphical records in documents by optical and spectroscopical methods for forensic practice|
|Summary:||The subject of diploma thesis was study of the material composition of carbonless copy paper by optical and spectroscopic methods and the technology of creating a graphical record. The properties of crystal violet lactone, currently the most commonly used color developer in carbonless copy papers, were studied. The hypothesis, that color developer has different properties on carbonless copy paper and office paper was verified, as well as its ability to luminesce in the IR region. Furthermore, the impact of heat and light aging on some physical and chemical properties of copies were observed. Changes were monitored by colorimetric measurments, FTIR spectroscopy and by observation of infrared luminescence at different wavelenghts. Differences between copies made on carbonless copy paper and office paper were observed. Finally, alternative methods of identifying color former on office paper were examined and abrasion of carbonless copy paper and cause of dark marks were tested.|
|Key words:||carbonless copy paper, document, crystal violet lactone, FTIR spectroscopy, IR luminescence, colorimetry, aging|
To display the final thesis assignment form click on the Display the final thesis assignment form icon. The following icons - Final thesis, Thesis appendices, Supervisor's review, Opponent's review - relate to the final thesis and can be downloaded. They could be displayed on condition they have been inserted and are available publicly.Parts of thesis with postponed release:
|–||Final thesis (final thesis appendices) unlimited|
|–||Reviews for final thesis unlimited|