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Ion‐Current Rectification in Nanopores and Nanotubes with Broken Symmetry
Abstract
This article focuses on ion transport through nanoporous systems with special emphasis on rectification phenomena. The effect of ion‐current rectification is observed as asymmetric current–voltage (I–V) curves, with the current recorded for one voltage polarity higher than the current recorded for the same absolute value of voltage of opposite polarity. This diode‐like I–V curve indicates that there is a preferential direction for ion flow. Experimental evidence that ion‐current rectification is inherent to asymmetric, e.g., tapered, nanoporous systems with excess surface charge is provided and discussed. The fabrication and operation of asymmetric polymer nanopores, gold nanotubes, glass nanocapillaries, and silicon nanopores are presented. The possibility of tuning the direction and extent of rectification is discussed in detail. Theoretical models that have been developed to explain the ion‐current rectification effect are also presented.
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Cited by
Critical Knowledge Gaps in Mass Transport through Single-Digit Nanopores: A Review and Perspective
Faucher, S., Aluru, N., Bazant, M. Z., Blankschtein, D., Brozena, A. H., Cumings, J., Pedro de Souza, J., Elimelech, M., Epsztein, R., Fourkas, J. T., et al. (2019) · The Journal of Physical Chemistry C · doi:10.1021/acs.jpcc.9b02178 · Cited by 365
Self-citationNoise analysis and reduction in solid-state nanopores
Tabard-Cossa, V., Trivedi, D., Wiggin, M., Jetha, N. N., & Marziali, A. (2007) · Nanotechnology · doi:10.1088/0957-4484/18/30/305505 · Cited by 306
Transport mechanisms in nanopores and nanochannels: can we mimic nature?
Tagliazucchi, M., & Szleifer, I. (2015) · Materials Today · doi:10.1016/j.mattod.2014.10.020 · Cited by 269
Metadata
- Authors
- Siwy, Z. S.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2006-03-06
- Volume
- 16
- Issue
- 6
- Pages
- 735-746
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2050291197
- Cited by
- 867
- References
- 0
- FWCI
- 19.26
- Type
- journal article
- Language
- en
- Open access
- closed
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