Journal
NANO LETTERS
Volume 10, Issue 1, Pages 16-23Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl9023319
Keywords
Concentration polarization; nanofluidics; ionic hydrogel; electrokinetics; stabilization
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Funding
- Korea Science and Engineering Foundation [RO1-2007-00020675-0]
- Korean Research Foundation [KRF-2007-331-D00040, KRF-J03000]
- National Research Foundation of Korea [NRF-2009-352-D00034]
- National Institute of Health [EB005743]
- National Science Foundation [CBET-0347348]
- NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING [R01EB005743] Funding Source: NIH RePORTER
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We demonstrate a recycled ion-flux through heterogeneous nanoporous junctions, which induce stable ion concentration polarization with an electric held. The nanoporous junctions are based on integration of ionic hydrogels whose surfaces are negatively or positively charged for cationic or anionic selectivity, respectively. Such heterogeneous junctions can be matched up in a way to achieve continuous ion-flux operation for stable concentration gradient or ionic conductance. Furthermore, the combined junctions can be used to accumulate ions on a specific region of the device.
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