title: Size-dependent surface tension and Tolman's length of droplets.
abstract: A model for the size-dependent surface tension gammalv(D) of liquid droplets, free of any adjustable parameter, is presented in terms of the size-dependent surface energy gammasv(D). It is found that gammalv(D) drops monotonically with the size of the droplet in the nanometer region. Modeling predictions agree with computer simulations for sodium, aluminum, and water droplets. Meanwhile, the Tolman's equation is found to be valid for small particles, and the Tolman's length is always positive and becomes longer when the droplet size is decreased.
authors.affiliation: Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China.
authors.forename: Hai Ming
authors.initials: HM
authors.lastname: Lu
authors.forename: Qing
authors.initials: Q
authors.lastname: Jiang