期刊
NANO LETTERS
卷 15, 期 8, 页码 5046-5051出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b01115
关键词
Nanofluidics; charge inversion; divalent ion transport; open potential; ion-ion correlation
类别
资金
- Nanostructures for Electrical Energy Storage (NEES), an Energy Frontier Research Center - US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) [DESC000160]
Solid-state nanofluidic devices have proven to be ideal systems for studying the physics of ionic transport at the nanometer length scale. When the geometrical confining size of fluids approaches the ionic Debye screening length, new transport phenomena occur, such as surface mediated transport and permselectivity. Prior work has explored these effects extensively in monovalent systems (e.g., predominantly KCl and NaCl). In this report, we present a new characterization method for the study of divalent ionic transport and have unambiguously observed divalent charge inversion at solid/fluid interfaces. This observation has important implications in applications ranging from biology to energy conversion.
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