期刊論文
| 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 | en |
| ISSN | 1932-7447 |
| 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 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/76822 ) |