... variations of the initial fabrication process werestudied; on one hand the impact of the polyelectrolyte/TEOS ratio, and on the other hand, the number of dip/reduction cycles. The intensity of the ... showedthat there was no significant alteration in the morphol-ogy of the films. Nevertheless, the UV-VI S absorptionspectra of the samples were dramatically modified. After the thermal treatment the ... (10-1,10-2,10-3,10-4,10-5,10-6dilution), and then it was plated 0.5 ml of the lastthree dilutions: 10-4,10-5, and 10-6. They were incubatedface down for 24 h at 37°C. After the incubation, it wascounted the colony formation...