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Quantitative Cell Imaging with Digital Holographic Microscopy

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If you have a question about this talk, please contact Dr. Jochen Guck.

Digital holographic microscopy (DHM) provides contact-less, label-free, quantitative phase imaging for modular integration into commercial microscopes. The reconstruction of digitally captured holograms is performed numerically. Thus, multi-focus imaging of sample parts in different layers is achieved from a single digital hologram.

The evaluation of the obtained quantitative phase contrast images provides data for dynamic thickness monitoring, and the analysis of fluidics. The DHM feature of (subsequent) numerical autofocus enables applications in the field of live cell analysis by avoiding mechanical focus realignment and the determination of axial sample positions. In this way, long term time-lapse investigations in toxicology and cancer research, monitoring of fast dynamic processes like shape variations and 3D cell tracking is achieved. In addition, the integral cellular refractive index and its statistics are available.

In an overview results from investigations with different DHM arrangements on toxin induced reactions of cancer cells, cell swelling kinetics, cell division analysis as well as refractive index measurements are shown. Furthermore, the analysis of the cell response to optical manipulation, shape variations of sedimenting human erythrocytes, reactions of cells to different substrates and 3D cancer cell migration in a 3D tissue model prospect new application fields of DHM for quantitative cell imaging in Life Sciences.

This talk is part of the Physics of Living Matter - PLM series.

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