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题名: Fabrication and ionic transportation characterization of funnel-shaped nanochannels
作者: Xiao, Kai1; Li, Pei3; Xie, Ganhua1; Zhang, Zhen1; Wen, Liping2; Jiang, Lei2, 3
刊名: RSC ADVANCES
发表日期: 2016
卷: 6, 期:60, 页:55064-55070
收录类别: SCI
英文摘要: Solid-state nanochannels have attracted increasing interest because they exhibit similar properties to, but are more stable than, biological nanopores. However, existing solid-state nanochannels, such as conical-shaped nanochannels, possess a limited critical region at the tip side, and thus demonstrate poor controllability of the orientation and magnitude of ionic rectification. In this work, we demonstrate the fabrication of funnel-shaped nanochannels with a gradual structural transformation. The longer critical regions can be controlled by tuning the etching temperature. In addition, the rectification ratio can be increased from about 3 to 6 by introducing a longer critical region. Using finite-element analysis based on the Poisson-Nernst-Planck (PNP) equations, it can be found that the increased length of the critical region could contribute to the asymmetric ion transportation. The funnel-shaped nanochannels with enhanced asymmetric ion transportation may find applications in the fields of materials, electronics, and life sciences.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35575
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Green Printing, Beijing Natl Lab Mol Sci BNLMS, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interfacial Sci, Beijing 100190, Peoples R China
3.Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Sch Chem & Environm, Minist Educ, Beijing 100191, Peoples R China
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