期刊论文详细信息
Sensors
The Influence of Nanopore Dimensions on the Electrochemical Properties of Nanopore Arrays Studied by Impedance Spectroscopy
Krishna Kant1  Craig Priest2  Joe G. Shapter1 
[1] School of Chemical and Physical Sciences, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; E-Mails:;Ian Wark Research Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; E-Mail:
关键词: anodization;    porous alumina;    Electrochemical Impedance Spectroscopy (EIS);    nanopore arrays;   
DOI  :  10.3390/s141121316
来源: mdpi
PDF
【 摘 要 】

The understanding of the electrochemical properties of nanopores is the key factor for better understanding their performance and applications for nanopore-based sensing devices. In this study, the influence of pore dimensions of nanoporous alumina (NPA) membranes prepared by an anodization process and their electrochemical properties as a sensing platform using impedance spectroscopy was explored. NPA with four different pore diameters (25 nm, 45 nm and 65 nm) and lengths (5 μm to 20 μm) was used and their electrochemical properties were explored using different concentration of electrolyte solution (NaCl) ranging from 1 to 100 μM. Our results show that the impedance and resistance of nanopores are influenced by the concentration and ion species of electrolytes, while the capacitance is independent of them. It was found that nanopore diameters also have a significant influence on impedance due to changes in the thickness of the double layer inside the pores.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.

【 预 览 】
附件列表
Files Size Format View
RO202003190019931ZK.pdf 1735KB PDF download
  文献评价指标  
  下载次数:11次 浏览次数:6次