We study the internal structure of nanometer-sized D2O-nonane aerosol droplets formed in supersonic nozzle expansions using a variety of experimental techniques including small angle X-ray scattering (SAXS). By fitting the SAXS spectra to a wide range of droplet structure models, we find that the experimental results are inconsistent with mixed droplets that form aqueous core-organic shell structures, but are quite consistent with spherically asymmetric lens-on-sphere structures. The structure that agrees best with the SAXS data and Fourier transform infra-red spectroscopy measurements is that of a nonane lens on a sphere of D2O with a contact angle in the range of 40°-120°.
H. Pathak et al., "The structure of D2O-nonane nanodroplets," Journal of Chemical Physics, vol. 140, no. 22, pp. 224318-1-224318-13, American Institute of Physics (AIP), Jun 2014.
The definitive version is available at https://doi.org/10.1063/1.4881423
Keywords and Phrases
Physical chemistry; Physics; Droplet structure; Experimental techniques; Fourier transform infra reds; Internal structure; Nano-droplets; Shell structure; Small angle X-ray scattering; Supersonic nozzles; Drops
International Standard Serial Number (ISSN)
Article - Journal
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