The TEM images were recorded by ZEISS Libra 200 FE 200kV equipped with Omega filter in column. The samples were prepared by dropping the suspension on copper TEM grid and letting it dry in air. The diameter measurements were performed by the iTEM TEM Imaging Platform software (Olympus). During the last incubation, a single image was acquired every 2 minutes. Then, acquired images were processed and particles immobilized on spots counted using ImageJ software.