Instrumental analytics and process control

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Spectral imaging

Spectral imaging methods constitute an independent key research topic of the analytics group. De­pending on the specific experimental approach, such state-of-the-art methods enable the monitoring of the spatial distribution of chemical and physical parameters across the surface of samples on length scales from micrometers to macroscopic scales. Microspectroscopic imaging techniques are based on mid-infrared (MIR) or Raman microscopy, respectively. Furthermore, the use of focal plane array (FPA) detectors in MIR microscopy allows time-resolved measurements and thus allows kinetic investigations. First studies with this method at IOM are directed towards microfluidics. On the other hand, the use of NIR cameras allows the spectroscopic analysis of large-area or web-type materials. Applications of such techniques are mainly settled in industrial process control.

Selected publications

  • O. Daikos, K. Heymann, T. Scherzer,
    Monitoring of Thickness and Conversion of Thick White Pigmented Coatings by NIR Hyperspectral Imaging,
    Progr. Org. Coat. 125 (2018), 8-14,
    doi: 10.1016/j.porgcoat.2018.08.022

  • G. Mirschel, O. Daikos, T. Scherzer, C. Steckert,
    Near‑Infrared Chemical Imaging Used for In‑line Analysis of Functional Finishes on Tex­tiles,
    Talanta 188 (2018), 91-98,
    doi: 10.1016/j.talanta.2018.05.050

  • G. Mirschel, O. Daikos, T. Scherzer, C. Steckert,
    Near‑Infrared Chemical Imaging Used for In‑line Analysis of Inside Adhesive Layers in Textile Laminates,
    Anal. Chim. Acta 932 (2016), 69-79,
    doi: 10.1016/j.aca.2016.05.015