Aerosol SANS: A new method to probe the structure of nanodroplets

摘要

Small angle neutron scattering (SANS) is proving to be an invaluable tool for probing the structure of nanodroplets. By fitting the SANS scattering spectrum one can derive the key properties of the aerosol, i.e. the number density, the average particle size, and the polydispersity, under conditions where conventional aerosol measurements are not possible. Furthermore, in binary nanodroplets it appears feasible to identify scattering from an enriched surface layer of the droplet, a capability that is relevant for understanding the aerosol formation process as well as the heterogeneous chemistry of the multi-component nanodroplets.