２０１８年９月３日 Yael Avni氏

日時：２０１８年９月３日（月）　１１：００〜１２：３０
場所：首都大学東京　８号館３０４号室
講師：Yael Avni氏 (Tel Aviv University, Israel)
題目：Charge-regulated macro-ions in ionic solutions

要旨：Macromolecules in aqueous environment often carry a self-regulating and non-constant charge due to dissociation/association of their ionic groups. The degree of dissociation/association depends on the local electrostatic potential, allowing for Charge-Regulation (CR) to occur, and modifying the present electrostatic interactions. In this talk, I will review the mean-field formalism used to describe CR phenomena, applying it first to the well-studied case of two interacting CR surfaces. I will then present an extension of the theory, which describes a system of many mobile CR macro-ions, and explore the resulting interesting behavior by studying the effective screening length [1].

[1] Y. Avni, D. Andelman, T. Markovich and R. Podgornik, Soft Matter 14, 6058 (2018).