Size of particles versus surface area
With a low density of particles on surfaces, large areas have to be examined to describe their distribution. Particles as small as 5 nm are still of interest and therefore high speed mapping is essential, exactly where the strength of this new instrumentation lies. In the past, analysis of surface areas of 10x10 micrometer (with 10 nm resolution) could take up to an hour. Now we are able to go from 10 nm detection to a detection limit of 2.5 nm, while scanning even faster.