Proceedings PaperResults of sediment motion visualization by a modified LASCA technique
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A modified version of the Laser Speckle Contrast Analysis technique was developed. It is different of the typical LASCA technique as the laser beam is not reflected by the object but transmitted through a cuvette containing a diluted suspension. A digital image with speckles is taken and the time contrast not the space contrast is calculated, which is the second main difference from the typical LASCA technique. The contrast is converted into colors and a contrast image, hence a velocity map is obtained. The results of analyzing different biological suspensions with this technique are presented and the possibility of using it for micrometric particle motion and as a fast diagnosis method is discussed.