| abstract |
Under the effect of the dispersion effected by a liquid sample including particles, a gradient of a compound forms in a fluid chamber, which results in a portion of the fluid chamber that is enriched with particles and a portion of the fluid chamber that is depleted of particles and/or a portion of the fluid chamber, called the fast portion, in which the speed of the particles is high, as well as a portion of the fluid chamber, called the slow portion, in which the speed of the particles is low. The method comprises the acquisition of an image of the fluid chamber by an image sensor, as well as the selection, on the acquired image, of a region of interest corresponding to the enriched portion or to the depleted portion. The characterisation of the sample is performed according to the intensity of the pixels located in the selected region of interest. |