title: Pseudo 1-D Micro/Nanofluidic Device for Exact Electrokinetic Responses.
abstract: Conventionally, a 1-D micro/nanofluidic device, whose nanochannel bridged two microchannels, was widely chosen in the fundamental electrokinetic studies; however, the configuration had intrinsic limitations of the time-consuming and labor intensive tasks of filling and flushing the microchannel due to the high fluidic resistance of the nanochannel bridge. In this work, a pseudo 1-D micro/nanofluidic device incorporating air valves at each microchannel was proposed for mitigating these limitations. High Laplace pressure formed at liquid/air interface inside the microchannels played as a virtual valve only when the electrokinetic operations were conducted. The identical electrokinetic behaviors of the propagation of ion concentration polarization layer and current-voltage responses were obtained in comparison with the conventional 1-D micro/nanofluidic device by both experiments and numerical simulations. Therefore, the suggested pseudo 1-D micro/nanofluidic device owned not only experimental conveniences but also exact electrokinetic responses.
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Junsuk
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Mechanical and Aerospace Engineering, Seoul National University , Seoul 08826, Republic of Korea.|Institute of Advanced Machines and Design, Seoul National University , Seoul 08826, Republic of Korea.|Big Data Institute, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Ho-Young
authors.initials: HY
authors.lastname: Kim
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University , Seoul 08826, Republic of Korea.|Institute of Advanced Machines and Design, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Hyomin
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Electrical and Computer Engineering, Seoul National University , Seoul 08826, Republic of Korea.|Big Data Institute, Seoul National University , Seoul 08826, Republic of Korea.|Inter-university Semiconductor Research Center, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Sung Jae
authors.initials: SJ
authors.lastname: Kim