Abstract

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°.

Department(s)

Physics

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)

0021-9606

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2014 American Institute of Physics (AIP), All rights reserved.

Included in

Physics Commons

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