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首頁> 外文期刊>Lab on a chip >Ionic current rectification at a nanofluidic/microfluidic interface with an asymmetric microfluidic system
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Ionic current rectification at a nanofluidic/microfluidic interface with an asymmetric microfluidic system

機譯：具有不對稱微流體系統(tǒng)的納米流體/微流體界面的離子電流整流

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A nanofluidic-microfluidic interface is reported that rectifies ionic current using uncoated symmetric nanocapillaries. Previously, ionic current rectification has been achieved by other groups with nanochannels with differential coatings and in nanopores that are conical in shape. This simple device uses nanocapillary membranes (NCMs) with uncoated symmetric channels to connect a microfluidic channel and a larger solution reservoir. The conductivity of the solution in the microchannel appears to be critical in the formation of the low "off" state current and the high "on" state current. It is hypothesized that the "off" state current is low due to the formation of an ion depletion zone in the microchannel while the higher "on" state currents are produced by a zone of enhanced ionic concentration in the microchannel.
機譯：報道了一種納米流體-微流體界面，該界面使用未涂覆的對稱納米毛細管來整流離子電流。以前，離子電流的整流是通過其他具有帶差分涂層的納米通道和圓錐形的納米孔中實現(xiàn)的。這種簡單的設(shè)備使用具有未涂覆的對稱通道的納米毛細管膜（NCM）連接微流體通道和較大的溶液池。微通道中溶液的電導(dǎo)率對于形成低“關(guān)”態(tài)電流和高“導(dǎo)通”態(tài)電流至關(guān)重要。據(jù)推測，由于在微通道中形成了離子耗盡區(qū)，因此“截止”狀態(tài)電流較低，而較高的“導(dǎo)通”狀態(tài)電流是由微通道中離子濃度增加的區(qū)域產(chǎn)生的。

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