title: Stabilization of ion concentration polarization layer using micro fin structure for high-throughput applications.
abstract: Ion concentration polarization (ICP) has been extensively researched concerning new fundamentals in nanoscale electrokinetics and novel engineering applications. While biomedical and environmental ICP applications have a number of advantages compared to conventional methods, the technique has suffered from the critical limitation of low processing capacity because it has been usually presented in a micro/nanofluidic platform. In this paper, we devised micro fin structures inside a macroscale high-throughput ICP device and successfully demonstrated a stable formation of ICP layer and its performance. Since the fin structures created surface conductive fluidic circumstances and assisted in physically suppressing undesirable electrokinetic vortices generated in this fluidic regime, ICP was stably generated even in this macroscale system. Finally, batch-type droplet ICP preconcentrator and continuous-type ICP separator were introduced as examples for high-throughput millimeter-scale ICP devices using the implanted fin structures.
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea. gates@snu.ac.kr.
authors.forename: Kihong
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea. gates@snu.ac.kr.
authors.forename: Wonseok
authors.initials: W
authors.lastname: Kim
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea. gates@snu.ac.kr.
authors.forename: Hyekyung
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea. gates@snu.ac.kr and Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea and Big Data Institute, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Sung Jae
authors.identifier: http://orcid.org/0000-0002-8622-1765
authors.initials: SJ
authors.lastname: Kim