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Article Dans Une Revue Optics Express Année : 2010

Micropipe flow visualization using digital in-line holographic microscopy

Résumé

Digital in-line holography is used to visualize particle motion within a cylindrical micropipe. Analytical expression of the intensity distribution recorded in the CCD sensor plane is derived using the generalized Huygens-Fresnel integral associated with the ABCD matrices formalism. Holograms obtained in a 100µm in diameter micropipe are then reconstructed using fractional Fourier transformation. Astigmatism brought by the cylindrical micropipe is finally used to select a three dimensional region of interest in the microflow and thus to improve axial localization of objects located within a micropipe. Experimental results are presented and a short movie showing particle motion within a micropipe is given.
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Dates et versions

hal-00779175 , version 1 (21-01-2013)

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Nicolas Verrier, Clément Remacha, Marc Brunel, Denis Lebrun, Sébastien Coëtmellec. Micropipe flow visualization using digital in-line holographic microscopy. Optics Express, 2010, 18 (8), pp.7807. ⟨10.1364/OE.18.007807⟩. ⟨hal-00779175⟩
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