Dynamic Laser Speckle on biomedical and biological applications

E. E. GRUMEL; N. L. CAP; H. J. RABAL; M. TRIVI

Atenas

Conferencia; 12th. Annual International Conference on Information Technology & Computer Science; 2016

Dynamic laser speckle (DLS) is an optical technique that has been used for several applications in biology, medicine and industry. It is based on a scattering phenomenon occurring when coherent laser light illuminates an active surface. The surface appears to be covered by tiny bright and dark dots that fluctuate in a seemingly random way as for a boiling liquid, according with the surface fluctuation. Thus, the study of the temporary evolution of the speckle patterns may provide an interesting tool to characterize the parameters involved in the sample dynamic processes. In this paper, we present a brief account of the basic concepts of both the speckle phenomenon and the (DLS) technique. Then, we show several biomedical and biological applications as pharmacodynamics evaluation of parasite motility, assessment of seed?s viability, bruising in fruits and detection of fungi in seeds, determination of maize hardness, analysis of bacterial chemotactic response, identification of motility clusters per area in surfaces colonized by Pseudomonas aeruginosa, discrimination of motile bacteria from filamentous fungi, blood coagulation measurements, monitoring Bacterial Colony Growth