Deciphering ion concentration polarization-based electrokinetic molecular concentration at the micro-nanofluidic interface: theoretical limits and scaling laws
Name
c8nr02170h.pdf
Size
2.45 MB
Format
Adobe PDF
Checksum (MD5)
7511cb6c8369987f7c6c03f8127ac6aa
Author(s)
Ouyang, Wei
Ye, Xinghui
Li, Zirui
Han, Jongyoon
Date Issued
May 2018
Journal
Nanoscale
Publisher
Royal Society of Chemistry (RSC)
Citation
Ouyang, Wei, Xinghui Ye, Zirui Li, and Jongyoon Han. “Deciphering Ion Concentration Polarization-Based Electrokinetic Molecular Concentration at the Micro-Nanofluidic Interface: Theoretical Limits and Scaling Laws.” Nanoscale (2018).
Version
Final published version
Abstract
The electrokinetic molecular concentration (EMC) effect at the micro-nanofluidic interface, which enables million-fold preconcentration of biomolecules, is one of the most compelling yet least understood nanofluidic phenomena. Despite the tremendous interests in EMC and the substantial efforts devoted, the detailed mechanism of EMC remains an enigma so far owing to its high complexity, which gives rise to the significant scientific controversies outstanding for over a decade and leaves the precise engineering of EMC devices infeasible. We report a series of experimental and theoretical new findings that decipher the mechanism of EMC. We demonstrate the first elucidation of two separate operating regimes of EMC, and establish the first theoretical model that analytically yet concisely describes the system. We further unveil the dramatically different scaling behaviors of EMC in the two regimes, thereby clarifying the long-lasting controversies. We believe this work represents important progress towards the scientific understanding of EMC and related nano-electrokinetic systems, and would enable the rational design and optimization of EMC devices for a variety of applications.
MIT Department
Massachusetts Institute of Technology. Department of Biological Engineering
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Creative Commons Attribution-NonCommercial 3.0 Unported
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1039/c8nr02170h
