Fine structure of the dielectric response to a molecular-sized ion in water

Yoji Kubota, Ryo Akiyama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We have revisited water polarization phenomena caused by a charge of a solute whose size is the same as water molecules, because there is a qualitative discrepancy in the calculated results between various methods. The polarization was calculated using molecular dynamics (MD) simulations. Various basic cell sizes and charges of the solute were examined. In the case of a positive solute, the dependence of the polarizability on the value of solute charge showed a maximum. However, the response to the solute charge was not saturated, and it approached a linear response behavior. The feature for a negative solute was almost the same, but much more remarkable. Our results show not only a strong nonlinearity of the dielectric response but also fine structure in the polarizability curve. A picture for water polarization is discussed based on the differences between previous results and our results.

Original languageEnglish
Pages (from-to)1588-1591
Number of pages4
JournalJournal of Physical Chemistry Letters
Issue number13
Publication statusPublished - Jul 7 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry


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