title: "Effective" negative surface tension: a property of coated nanoaerosols relevant to the atmosphere.
abstract: Atmospheric aerosols play a very important role in atmospheric processes and have a major influence on the global climate. In this paper, we report results of a molecular dynamics study on the unique properties of organic-coated water droplets. In particular, we find that, for particles preferring an inverted micelle structure, the lower chain-chain interaction, with increasing radial distance from the water-organic interface, results in a negative internal radial pressure profile for the organic layer. As a result, a coated particle behaves as though the surface tension is "negative" and implies that such a particle will inherently have an inverse Kelvin vapor pressure effect, resulting in increased water condensation.
authors.affiliation: Department of Mechanical Engineering and Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA.
authors.forename: Purnendu
authors.initials: P
authors.lastname: Chakraborty
authors.forename: Michael R
authors.initials: MR
authors.lastname: Zachariah
mesh_terms: D000327:Adsorption; D000336:Aerosols / Q000737:chemistry*; D000393:Air Pollutants / Q000737:chemistry*; D000465:Algorithms; D001272:Atmosphere / Q000737:chemistry*; D017752:Greenhouse Effect; D008823:Micelles; D049329:Nanostructures / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry; D010316:Particle Size; D011312:Pressure; D013500:Surface Tension; D014835:Volatilization; D014867:Water / Q000737:chemistry
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D008823:Micelles; D009930:Organic Chemicals; D014867:Water