Electrochemical Characterization of Vertically Aligned Carbon Nanofiber Arrays Prepared by Hole‐mask Colloidal Lithography

Abstract

Nanoelectrode arrays consisting of vertically aligned carbon nanofibers were prepared through plasma enhanced chemical vapor deposition and patterned using hole‐mask colloidal lithography (HCL), a simple fabrication method employed as a cost‐effective patterning alternative to the conventional electron beam lithography. The density of the carbon nanofibers was easily altered by changing the concentration of the polystyrene spheres employed in HCL. Cyclic voltammetry and chronoamperometry were used to electrochemically characterize the arrays of different density. Results indicate that the density of the carbon nanofibers leads to differences in the macro/micro electroactive surface areas.

Micro/Nano Electrode Array Sensors: Advances in Fabrication and Emerging Applications in Bioanalysis

“…In addition, nucleation and growth of materials to form nanostructures with electrochemical performances has also become a way for construction of nano electrode arrays. Vertically aligned carbon nanotubes/nanofibers (Arumugam et al, 2009;Robinson et al, 2016;Song et al, 2019) as well as a vast range of nano electrocatalysts (e.g., prussian blue, porous gold or platinum nanowire, NiO nanocone, mesoporous rhombus-shaped ZnO rod, etc.) have been fabricated as nano electrode arrays (Karyakin et al, 2004;Puganova and Karyakin, 2005;Zhang et al, 2009;Wang et al, 2011Wang et al, , 2012Wen et al, 2015).…”