Dipole moment of a microdroplet containing a macroion

Heng Kwong Tsao, Ching Hung Ho, Chin Yao Tseng, Yu Jane Sheng

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A study was conducted on the density fluctuation of counterions within aqueou droplets containing no macroions by Monte Carlo simulations. In terms of mean-square dipole moment, the fluctuation grows and becomes saturated as the counterin concentration was increased. As such, the mean-square dipole was found to be proportional to the volume of the microdroplet and was much greater than that induced by particle fluctuations alone, which was estimated from the mean-field theory.

Original languageEnglish
Pages (from-to)6689-6696
Number of pages8
JournalJournal of Chemical Physics
Issue number14
StatePublished - 8 Apr 2003


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