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Interferometric out-of-focus imaging of freezing droplets

Abstract : Interferometric out-of-focus images of freezing droplets are presented, and compared to simultaneous in-focus images. In these experiments, the freezing process is characterized by a breaking of the initial droplet’s glare points into a wide number of neighbor bright spots. The 2D-Fourier transforms of the interferometric patterns show an elliptical contour, with a central spot and eventually symmetric spread spots more or less intense, located around the position of the initial glare points of the liquid droplet (depending on the degree of freezing).
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Submitted on : Thursday, April 25, 2019 - 4:14:03 PM
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Marc Brunel, Mohamed Talbi, Sébastien Coëtmellec, Gérard Gréhan, yingchun Wu, et al.. Interferometric out-of-focus imaging of freezing droplets. Optics Communications, Elsevier, 2019, 433, pp.173-182. ⟨10.1016/j.optcom.2018.09.075⟩. ⟨hal-02110922⟩



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