Ion concentration polarization and its applications
Ion Concentration Polarization (ICP) is a fundamental electrochemical transport phenomenon that occurs when ion current passes through an ion-selective membrane in the presence of an applied electric field. Recently, ICP has attracted a great deal of attentions in microfluidic research community due...
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| Format: | Thesis |
| Language: | English |
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2016
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| Online Access: | http://hdl.handle.net/10356/66048 |
| _version_ | 1826128077304889344 |
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| author | Phan, Dinh Tuan |
| author2 | Yang Chun, Charles |
| author_facet | Yang Chun, Charles Phan, Dinh Tuan |
| author_sort | Phan, Dinh Tuan |
| collection | NTU |
| description | Ion Concentration Polarization (ICP) is a fundamental electrochemical transport phenomenon that occurs when ion current passes through an ion-selective membrane in the presence of an applied electric field. Recently, ICP has attracted a great deal of attentions in microfluidic research community due to its potential applications in biological analyses and chemical species separation processes. The nature of this distinctive phenomenon is a nonlinear behavior inside the ICP region caused by the complexity of multiscale and multiphysic phenomena such as vortex formation, electroconvection instability and overlimiting conductance (OLC). Therefore from both theoretical model development and experimental investigation viewpoints, study of ICP is very important and the ICP phenomenon is still poorly understood. This study focuses on achieving a better fundamental understanding and exploring new microfluidic applications of ICP. Specifically, the thesis research first reports a novel, robust fabrication method for integrating a nanojunction inside the microfluidic device and the characterization of its working performance. Then based on such fabrication method, a new droplets-based concentrator utilizing ICP is developed and studied experimentally. Subsequently, a new platform with paper-based microfluidic device for sample concentration is reported, by using a combination of electrokinetic and ICP principles. Finally, to show more potential applications of ICP, a two-droplet generator is proposed and the mechanism for self-triggering in synchronization formation is investigated. |
| first_indexed | 2024-10-01T07:18:59Z |
| format | Thesis |
| id | ntu-10356/66048 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:18:59Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/660482023-03-11T17:28:58Z Ion concentration polarization and its applications Phan, Dinh Tuan Yang Chun, Charles School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Fluid mechanics DRNTU::Engineering::Electrical and electronic engineering::Microelectromechanical systems Ion Concentration Polarization (ICP) is a fundamental electrochemical transport phenomenon that occurs when ion current passes through an ion-selective membrane in the presence of an applied electric field. Recently, ICP has attracted a great deal of attentions in microfluidic research community due to its potential applications in biological analyses and chemical species separation processes. The nature of this distinctive phenomenon is a nonlinear behavior inside the ICP region caused by the complexity of multiscale and multiphysic phenomena such as vortex formation, electroconvection instability and overlimiting conductance (OLC). Therefore from both theoretical model development and experimental investigation viewpoints, study of ICP is very important and the ICP phenomenon is still poorly understood. This study focuses on achieving a better fundamental understanding and exploring new microfluidic applications of ICP. Specifically, the thesis research first reports a novel, robust fabrication method for integrating a nanojunction inside the microfluidic device and the characterization of its working performance. Then based on such fabrication method, a new droplets-based concentrator utilizing ICP is developed and studied experimentally. Subsequently, a new platform with paper-based microfluidic device for sample concentration is reported, by using a combination of electrokinetic and ICP principles. Finally, to show more potential applications of ICP, a two-droplet generator is proposed and the mechanism for self-triggering in synchronization formation is investigated. Doctor of Philosophy (MAE) 2016-03-08T01:37:39Z 2016-03-08T01:37:39Z 2016 Thesis Phan, D. T. (2016). Ion concentration polarization and its applications. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/66048 en 145 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Fluid mechanics DRNTU::Engineering::Electrical and electronic engineering::Microelectromechanical systems Phan, Dinh Tuan Ion concentration polarization and its applications |
| title | Ion concentration polarization and its applications |
| title_full | Ion concentration polarization and its applications |
| title_fullStr | Ion concentration polarization and its applications |
| title_full_unstemmed | Ion concentration polarization and its applications |
| title_short | Ion concentration polarization and its applications |
| title_sort | ion concentration polarization and its applications |
| topic | DRNTU::Engineering::Mechanical engineering::Fluid mechanics DRNTU::Engineering::Electrical and electronic engineering::Microelectromechanical systems |
| url | http://hdl.handle.net/10356/66048 |
| work_keys_str_mv | AT phandinhtuan ionconcentrationpolarizationanditsapplications |