教師資料查詢 | 類別: 期刊論文 | 教師: 曾琇瑱 Tseng Shio-jenn (瀏覽個人網頁)

標題:Ion Concentration Polarization in Polyelectrolyte-Modified Nanopores
學年100
學期2
出版(發表)日期2012/04/01
作品名稱Ion Concentration Polarization in Polyelectrolyte-Modified Nanopores
作品名稱(其他語言)
著者Yeh, Li-Hsien; Zhang, Mingkan; Qian, Shizhi; Hsu, Jyh-Ping; Tseng, Shiojenn
單位淡江大學數學學系
出版者Washington, DC: American Chemical Society
著錄名稱、卷期、頁數Journal of Physical Chemistry C 116(15), pp.8672-8677
摘要Nanopores functionalized with synthetic or biological
polyelectrolyte (PE) brushes have significant potentials to rectify
ionic current and probe single biomacromolecules. In this work,
electric-field-induced ion transport and the resulting conductance in
a PE-modified nanopore are theoretically studied using a
continuum-based model, composed of coupled Poisson−Nernst−
Planck (PNP) equations for the ionic mass transport, and Stokes
and Brinkman equations for the hydrodynamic fields in the exterior
and interior of the PE layer, respectively. Because of the competition
between the transport of counterions and co-ions in the nanopore,
two distinct types of ion concentration polarization (CP) occur at
either opening of the PE-modified nanopore. These distinct CP
behaviors, which significantly affect the nanopore conductance, can
be easily manipulated by adjusting the bulk salt concentration and the imposed potential bias. The induced CP in the PEmodified nanopore is more appreciable than that in the corresponding bare solid-state nanopore.
關鍵字Biomacromolecules;Brinkman equation;Continuum-based models;Counterions;Functionalized;Hydrodynamic field;Ion concentrations;Ion transports;Ionic current;Poisson-Nernst-Planck equations;Salt concentration;Solid-state nanopore;Polarization;Polyelectrolytes;Nanopores
語言英文
ISSN1932-7447
期刊性質國外
收錄於
產學合作
通訊作者Qian, Shizhi; Hsu, Jyh-Ping
審稿制度
國別美國
公開徵稿
出版型式紙本
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