Enhanced Stability and Controllability of an Ionic Diode Based on Funnel-Shaped Nanochannels with an Extended Critical Region

Kai Xiao; Ganhua Xie; Zhen Zhang; Xiang-Yu Kong; Qian Liu; Pei Li; Liping Wen; Lei Jiang

doi:10.1002/adma.201505842

Enhanced Stability and Controllability of an Ionic Diode Based on Funnel-Shaped Nanochannels with an Extended Critical Region

Adv Mater. 2016 May;28(17):3345-50. doi: 10.1002/adma.201505842. Epub 2016 Mar 1.

Authors

Kai Xiao¹, Ganhua Xie¹, Zhen Zhang¹, Xiang-Yu Kong², Qian Liu³, Pei Li¹, Liping Wen², Lei Jiang^{1

2}

Affiliations

¹ Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
² Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
³ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China.

PMID: 26928676
DOI: 10.1002/adma.201505842

Abstract

The enhanced stability and controllability of an ionic diode system based on funnel-shaped nanochannels with a much longer critical region is reported. The polarity of ion transport switching from anion/cation-selective to ambipolar can be controlled by tuning the length and charge of the critical region. This nanofluidic structure anticipates potential applications in single-molecule biosensing, water resource monitoring, and healthcare.

Keywords: funnel-shaped; ion rectification; ionic diodes; nanochannels; nanopores.

Publication types

Research Support, Non-U.S. Gov't