title: Stabilization of ion concentration polarization using a heterogeneous nanoporous junction.
abstract: We demonstrate a recycled ion-flux through heterogeneous nanoporous junctions, which induce stable ion concentration polarization with an electric field. 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.
authors.affiliation: School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea.
authors.forename: Pilnam
authors.initials: P
authors.lastname: Kim
authors.forename: Sung Jae
authors.initials: SJ
authors.lastname: Kim
authors.forename: Jongyoon
authors.initials: J
authors.lastname: Han
authors.forename: Kahp Y
authors.initials: KY
authors.lastname: Suh
mesh_terms: D003432:Cross-Linking Reagents / Q000737:chemistry; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004553:Electric Conductivity; D004563:Electrochemistry / Q000379:methods*; D007477:Ions; D007700:Kinetics; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D011108:Polymers / Q000737:chemistry; D013997:Time Factors
chemical_list: D003432:Cross-Linking Reagents; D004129:Dimethylpolysiloxanes; D007477:Ions; D011108:Polymers; C013830:baysilon