Solution pH regulating mass transport in highly ordered nanopore array electrode

• Nanopore electrode array of 20 nm diameter was prepared using AC deposition.
• The nanopore electrode array exhibits microelectrode behavior.
• The electrochemistry can be regulated by the surface charge of the nanopores via pH.

A new highly ordered Au nanopore array electrode with pore diameter as small as 20 nm is fabricated using a simple electrochemistry method. The nanopore electrode displays a solution pH regulated quasi-sigmoidal voltammogram for electrochemical probe due to electrostatic interactions.

A new highly ordered Au nanopore array electrode with pore diameter as small as 20 nm is fabricated using a simple electrochemistry method. The nanopore electrode displays a quasi-sigmoidal voltammogram and exhibits anion electrostatic repulsion at pH > 7. This new nanopore array electrode may find potential applications in biosensing, mass transport, analysis and detection in confined environments.Figure optionsDownload as PowerPoint slide