Hands-on Activity Demonstration: Particle Size from Microscopy Images
Channel: METPHAST Program
Date: 2015-08-28

Size is one of the fundamental properties of an aerosol particle. To measure nanoparticle size distributions, samples can be collected with air filters and battery-operated pumps. The filter may then be viewed in a Scanning Electron Microscope (SEM). Using a scale on the SEM image, the sizes of nanoparticles can be determined. In this activity, learners measure the sizes of particles in SEM images and create graphs of particle size distributions.