High Current Ionic Diode Using Homogeneously Charged Asymmetric Nanochannel Network Membrane

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• 作者：Eunpyo Choi ; Cong Wang ; Gyu Tae Chang ; Jungyul Park
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：April 13, 2016
• 年：2016
• 卷：16
• 期：4
• 页码：2189-2197
• 全文大小：626K
• 年卷期：0
• ISSN：1530-6992

文摘

A high current ionic diode is achieved using an asymmetric nanochannel network membrane (NCNM) constructed by soft lithography and in situ self-assembly of nanoparticles with uniform surface charge. The asymmetric NCNM exhibits high rectified currents without losing a rectification ratio because of its ionic selectivity gradient and differentiated electrical conductance. Asymmetric ionic transport is analyzed with diode-like I–V curves and visualized via fluorescent dyes, which is closely correlated with ionic selectivity and ion distribution according to variation of NCNM geometries.