Diffusiophoresis of a charged toroidal polyelectrolyte

详细信息    查看全文

• 作者：Shiojenn Tseng^a ; ^{topology@mail.tku.edu.tw" class="auth_mail" title="E-mail the corresponding author} ; Yen-Rei Hsu^b ; Jyh-Ping Hsu^b ; ^{jphsu@ntu.edu.tw" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Diffusiophoresis ; Charged polyelectrolyte ; Toroid
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：1 June 2016
• 年：2016
• 卷：471
• 期：Complete
• 页码：14-19
• 全文大小：1254 K

文摘

Considering recent application of concentration driven motion of charged nanoparticles in sensing technology, we model the diffusiophoresis of an isolated toroidal polyelectrolyte (PE) for the first time. Choosing an aqueous KCl solution for illustration, its behavior under various conditions is simulated by varying the double layer thickness, the size of toroid, and its softness and fixed charge density. We show that the behavior of the present PE can be different both quantitatively and qualitatively from that of the corresponding spherical PE. This arises from the competition of the hydrodynamic force and the electric force acting on a PE. The geometry and the nature of a PE can also influence appreciably its behavior, yielding complicated and interesting results.