TY - CHAP A1 - Wohlschläger, Maximilian A1 - Khan, Yamna A1 - Leiter, Nina A1 - Versen, Martin A1 - Löder, Martin A1 - Laforsch, Christian T1 - Development of a BLOB-detection algorithm based on DoG to detect Plastic in an environmental matrix using FD-FLIM T2 - Optica Sensing Congress 2023 (AIS, FTS, HISE, Sensors, ES) N2 - The direct identification of plastics in an environmental matrix is heavily researched. We successfully developed a BLOB-detection algorithm based on differences of Gaussians to identify HDPE particles in an artificial environmental matrix using FD-FLIM. KW - Diode lasers KW - Fluorescence lifetime imaging KW - Phase shift KW - Neural networks KW - Optical filters KW - Spatial resolution Y1 - 2023 U6 - https://doi.org/10.1364/ES.2023.EW4E.4 ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Holst, Gerhard A1 - Versen, Martin A1 - Laforsch, Christian T1 - An optical method to differentiate wood from polymers using fluorescence lifetime imaging microscopy T2 - OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES) N2 - In this contribution investigations with fluorescence lifetime imaging microscopy (FLIM) are made to optically distinguish polymers and wood. The results show that the distinction and identification is possible in a graphical and calculative way. KW - Diode lasers KW - Fluorescence lifetime imaging KW - Image processing algorithms KW - Phase shift KW - Raman spectroscopy KW - Stray light Y1 - 2021 U6 - https://doi.org/10.1364/ES.2021.EW4G.6 SP - EW4G.6 ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Versen, Martin A1 - Laforsch, Christian T1 - Optical identification of car tire particles on soil using fluorescence lifetime imaging microscopy T2 - Optical Sensors and Sensing Congress 2022 (AIS, LACSEA, Sensors, ES), Technical Digest Series (Optica Publishing Group, 2022) N2 - Tire wear is one of the major contributors of environmental pollution by microplastic. FD-FLIM in combination with an image processing algorithm are successfully applied to detect tyre wear on soil. KW - Diode lasers KW - Fluorescence lifetime imaging KW - Image processing KW - Image processing algorithms KW - Phase modulation KW - Phase shift Y1 - 2022 U6 - https://doi.org/10.1364/ES.2022.ETu3H.3 SP - ETu3H.3 ER - TY - CHAP A1 - Leiter, Nina A1 - Wohlschläger, Maximilian A1 - Versen, Martin T1 - Frequency-domain fluorescence lifetime imaging as method to analyze wood structures T2 - Conference on Lasers and Electro-Optics N2 - The analysis of wood structures using FD-FLIM seems promising for the identification of wood at 488 nm, as lignin has a high impact on the fluorescence lifetime. KW - Diode lasers KW - Fluorescence KW - Fluorescence lifetime imaging KW - Microscopy Y1 - 2022 U6 - https://doi.org/10.1364/CLEO_AT.2022.JW3A.19 SP - JW3A.19 ER - TY - CHAP A1 - Wohlschläger, Maximilian A1 - Versen, Martin A1 - Laforsch, Christian T1 - Investigation of the Impact of CaCO3 Concentrations on the Fluorescence Lifetime of Polypropylene T2 - Conference on Lasers and Electro-Optics N2 - The impact of fillers on the fluorescence lifetime of polymers is still unknown. Investigating polypropylene containing different CaCO3 concentrations using FD-FLIM show an exponential increase in fluorescence lifetime proportional to the CaCO3 density in polypropylene. KW - Diode lasers KW - Fluorescence KW - Fluorescence lifetime imaging KW - Fourier transforms KW - Phase shift KW - Stray light Y1 - 2022 U6 - https://doi.org/10.1364/CLEO_AT.2022.AM2M.2 SP - AM2M.2 ER -