For these experiments an acoustic device with a membrane of 100 μm in thick was used which allow
more hardness to the fluidic cell. Otherwise, to avoid acoustic noise the experiments were done at a frequency of
24.4 kHz which correspond to the (2, 1) membrane vibration mode. The assessment of the density of immobilized
antibodies was evaluated in SPRI-PLEX II apparatus (From Horiba Jobin Yvon) by measuring the density of
captured antigen. The analysis of results show that in the active mode the rate of biorecognition is increased by a
mean ratio of 1.5 to 3 depending on the initial concentration, see Fig. 5. The results confirm that low frequency
vibrations can be used to increase the antibody grafting efficiency which allows the possibility to enhance the
immunocapture.