Print Email Facebook Twitter Hygroscopic properties of potassium-halide nanoparticles Title Hygroscopic properties of potassium-halide nanoparticles Author Giamarelou, M (University of the Aegean) Smith, M. (Harvard University) Papapanagiotou, E. (University of the Aegean) Martin, S. T. (Harvard University) Biskos, G. (TU Delft Atmospheric Remote Sensing; The Cyprus Institute) Date 2018 Abstract The hygroscopic properties of KBr, KCl, and KI nanoparticles having diameters from 8 to 60 nm were measured using a tandem Differential Mobility Analyzer. In all cases, the deliquescence and efflorescence relative humidity values increased with decreasing particle diameter. The associated growth factors also decreased with decreasing particle diameter, in agreement with predictions by Köhler theory. Overall, the theoretically predicted growth factors agreed well with the measurements, i.e., within ±3% uncertainty. For KCl particles having sizes down to 15 nm, however, a dynamic shape factor of 1.08, corresponding to non-spherical crystalline particles prior deliquescence, was inferred for agreement between measurements and theory. By comparison, KBr and KI within the same size range warranted shape factors of unity, equivalent to a sphere. These results contribute to an understanding of nanosize behavior widely relevant to material sciences as well as atmospheric aerosol particles over the oceans. To reference this document use: http://resolver.tudelft.nl/uuid:80aa3f65-b00c-49ed-8368-0ac5390235ec DOI https://doi.org/10.1080/02786826.2018.1432848 ISSN 0278-6826 Source Aerosol Science and Technology, 52 (5), 536-545 Part of collection Institutional Repository Document type journal article Rights © 2018 M Giamarelou, M. Smith, E. Papapanagiotou, S. T. Martin, G. Biskos Files PDF 02786826.2018.1432848.pdf 1019.73 KB Close viewer /islandora/object/uuid:80aa3f65-b00c-49ed-8368-0ac5390235ec/datastream/OBJ/view