NDLI: Ion current rectification in funnel-shaped nanochannels: Hysteresis and inversion effects.

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Ion current rectification in funnel-shaped nanochannels: Hysteresis and inversion effects.

Content Provider	Semantic Scholar
Author	Rosentsvit, Leon Wang, Wei Schiffbauer, Jarrod E. Chang, Hsueh-Chia Yossifon, Gilad
Copyright Year	2015
Abstract	Ion current rectification inversion is observed in a funnel-shaped nanochannel above a threshold voltage roughly corresponding to the under-limiting to over-limiting current transition. Previous experimental studies have examined rectification at either low-voltages (under-limiting current region) for conical nanopores/funnel-shaped nanochannels or at high-voltages (over-limiting region) for straight nanochannels with asymmetric entrances or asymmetric interfacing microchannels. The observed rectification inversion occurs because the system resistance is shifted, beyond a threshold voltage, from being controlled by intra-channel ion concentration-polarization to that controlled by external concentration-polarization. Additionally, strong hysteresis effects, due to residual concentration-polarization, manifest themselves through the dependence of the transient current rectification on voltage scan rate.
Starting Page	224706
Ending Page	224706
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1063/1.4936915
Alternate Webpage(s)	http://www3.nd.edu/~changlab/documents/IonRectificationRosentsvit.pdf
Alternate Webpage(s)	https://www3.nd.edu/~changlab/documents/IonRectificationRosentsvit.pdf
PubMed reference number	26671395
Alternate Webpage(s)	https://doi.org/10.1063/1.4936915
Journal	Medline
Volume Number	143
Issue Number	22
Journal	The Journal of chemical physics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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