Journal
OPTICS EXPRESS
Volume 12, Issue 19, Pages 4596-4601Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPEX.12.004596
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We report on a new method based on speckle size analysis and devoted to particle aggregation measurements. The experimental measurements give the speckle size variation during a salt aggregation process of polystyrene microspheres. The measurements are taken at a fixed monomer concentration, varying the salt concentration. Moreover, we applied this technique to follow blood platelet aggregation, usually monitored with a visible light transmittance photometer ( aggregometer). Aggregation process was induced by ADP ( adenosine diphosphate) addition, then we measured the speckle size variation versus time at two different ADP concentrations. (C) 2004 Optical Society of America.
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