https://scholars.lib.ntu.edu.tw/handle/123456789/406205
標題: | Ion fluctuations within an aqueous microdroplet in an apolar medium | 作者: | YU-JANE SHENG Tsao, Heng Kwong |
公開日期: | 1-一月-2001 | 出版社: | AMER PHYSICAL SOC | 卷: | 87 | 期: | 18 | 起(迄)頁: | 185501-1-185501-4 | 來源出版物: | Physical Review Letters | 摘要: | The density fluctuation of counterions within an aqueous droplet is investigated. In terms of mean-square dipole moment, the fluctuation grows and becomes saturated as the counterion concentration is increased. Using fluctuation-dissipation theorem, the mean-square dipole moment is found to be proportional to the polarizability of the microdroplet. This relation is confirmed by simulations and indicates that the nature of ion fluctuations is possible to be captured by the simple mean-field theory. With the Debye-Hückel approximation, an analytical expression for the mean-square dipole moment is obtained by the Poisson-Boltzmann theory. It agrees reasonably well with the results by simulations. © 2001 American Physical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/406205 | ISSN: | 00319007 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/85037225634 10.1103/PhysRevLett.87.185501 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。