| abstract |
This method for characterising a state of adhesion of particles is implemented via a system comprising a spatially coherent light source and a matrix-array photodetector, the particles being contained in a liquid medium, the liquid medium being bounded by a transparent surface, the particles being able to adhere to said transparent surface. This method comprises the following steps: illuminating (100) the medium with the spatially coherent light source; acquiring (110) at least one image using the matrix-array photodetector, the image being formed by radiation transmitted by the illuminated medium, and comprising at least one elementary diffraction pattern, each elementary diffraction pattern corresponding to waves diffracted by a particle during the illumination of the medium; and, calculating (120), from at least one acquired image and for at least one particle, a primary indicator characterising the state of adhesion of the particle to the transparent surface. |