Precise, contactless measurements of the surface tension of picolitre aerosol droplets

The surface composition and surface tension of aqueous droplets can influence key aerosol characteristics and processes including the critical supersaturation required for activation to form cloud droplets in the atmosphere. Despite its fundamental importance, surface tension measurements on droplet...

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Bibliographic Details
Published in:Chemical science (Cambridge) 2016-01, Vol.7 (1), p.274-285
Main Authors: Bzdek, Bryan R, Power, Rory M, Simpson, Stephen H, Reid, Jonathan P, Royall, C Patrick
Format: Article
Language:English
Subjects:
Activation
Aerosols
Atmospherics
Chemistry
Clouds
Droplets
Surface chemistry
Surface tension
Viscosity
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Summary:The surface composition and surface tension of aqueous droplets can influence key aerosol characteristics and processes including the critical supersaturation required for activation to form cloud droplets in the atmosphere. Despite its fundamental importance, surface tension measurements on droplets represent a considerable challenge owing to their small volumes. In this work, we utilize holographic optical tweezers to study the damped surface oscillations of a suspended droplet (
ISSN:2041-6520
2041-6539
DOI:10.1039/c5sc03184b