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Charge-induced wetting of aerosols
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10.1063/1.3430007
/content/aip/journal/apl/96/19/10.1063/1.3430007
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/19/10.1063/1.3430007
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Figures

Image of FIG. 1.
FIG. 1.

Charge-induced wetting of water droplets. The relative surface tension change in water droplets is a function of the charge number per square of the droplet radius , according to our physical model. The surface tension depression, if shown globally in the atmosphere, may increase the population of clouds, according to the classic Köhler theory. This estimation suggests that surface charge density should be larger than to satisfy a significant surface tension reduction.

Image of FIG. 2.
FIG. 2.

Charge-induced wetting of aerosols. The charging densities, , taken from recent reliable measurements (Refs. 23–25), exist in a range , indicating a potential increase in the wettability of aerosols. The observed charge densities are smaller than the Rayleigh limit of water as marked in the upper line. At small radii , the charge densities have a power-law scaling with as shown as the inclined line. This trend implies that surface charge density becomes large as aerosol size decreases.

Image of FIG. 3.
FIG. 3.

Charge-induced wetting of cloud droplets. The charge densities, taken from recent reliable data (Refs. 26–29), are below . The solid line is a prediction with typical parameters for fair-weather conditions based on the Harrison and Ambaum’s theory (Ref. 4). This result indicates that charge-induced wetting would rarely happen at cloud droplets.

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/content/aip/journal/apl/96/19/10.1063/1.3430007
2010-05-12
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Charge-induced wetting of aerosols
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/19/10.1063/1.3430007
10.1063/1.3430007
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