Fig. 3: Surface contamination kinetics on FDTS coating in MATISS-2 campaign.
a Density values of the coarse particles (50 μm2 < Area < 1500 μm2) measured on surfaces of 8 x 8 mm. b Density values of the fine particles (0.50 μm2 < Area < 50 μm2). The blue curves show the kinetics of the surface contamination increase. Red and green symbols show the FDTS-surfaces exposed for 193 days in MATISS-1 campaign and 365 days in MATISS-2.5 campaign, respectively, in different experimental periods than that of the blue dots. The FDTS-surfaces exposed Matiss-2.5 campaign was deposited on a borosilicate glass lamella (green dot) and suprasil lamella (green triangle). Error bars represent the standard deviation of the data. c Schematic representation of the location of the coarse particles on FDTS surfaces within a window exposed for 354 days (left). The side near the closest aperture is in y position =0. Each particle is represented by a circle whose color (yellow/orange/violet scale from 50 to 500 µm²) and sizes (ratio 1 to 1.5 from 50 to 1500 µm²) are proportional to the particle surface. The particles number histogram versus the y position (vertical axis) of particles on surfaces (right). d Same representation for fine particles with a yellow/orange/violet scale from 0 to 50 µm² and size ratio of 1 to 1.5 for 0 to 50 µm² particle surfaces.
