电流(流体)
法拉第笼
生物分子
离子流
材料科学
荧光
纳米技术
计算机科学
化学
物理
电气工程
光学
磁场
工程类
量子力学
作者
Dan Zhang,Xuanjun Zhang
出处
期刊:Small
[Wiley]
日期:2021-06-12
卷期号:17 (43)
被引量:31
标识
DOI:10.1002/smll.202100495
摘要
Abstract Inspired from bioprotein channels of living organisms, constructing “abiotic” analogues, solid‐state nanochannels, to achieve “smart” sensing towards various targets, is highly seductive. When encountered with certain stimuli, dynamic switch of terminal modified probes in terms of surface charge, conformation, fluorescence property, electric potential as well as wettability can be monitored via transmembrane ionic current, fluorescence intensity, faraday current signals of nanochannels and so on. Herein, the modification methodologies of nanochannels and targets‐detecting application are summarized in ions, small molecules, as well as biomolecules, and systematically reviewed are the nanochannel‐based detection means including 1) by transmembrane current signals; 2) by the coordination of current‐ and fluorescence‐dual signals; 3) by faraday current signals from nanochannel‐based electrode. The coordination of current and fluorescence dual signals offers great benefits for synchronous temporal and spatial monitoring. Faraday signals enable the nanoelectrode to monitor both redox and non‐redox components. Notably, by incorporation with confined effect of tip region of a needle‐like nanopipette, glorious in‐vivo monitoring is conferred on the nanopipette detector at high temporal‐spatial resolution. In addition, some outlooks for future application in reliable practical samples analysis and leading research endeavors in the related fantastic fields are provided.
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