Low-cost ultrafine aerosol sensors are experimentally calibrated with controlled aerosol
sources to provide metrics such as surface area, lung-deposited surface area, mean particle
size and/or total concentration from one or more electrical current measurements. However,
an aerosol with a large standard deviation in particle size provides a significantly different
signal from a monodisperse aerosol with the same median particle size. In this paper, we
investigate the effect of particle polydispersity on measurements in devices which employ …