title: The development and characterisation of square microfabricated electrode systems.
abstract: This paper outlines the systematic production and characterisation of biocompatible square microfabricated electrode systems for electroanalysis. In contrast to previous results, a combination of simulation, theoretical analysis and measurement has established that there is an enhanced current density for a microsquare electrode under mass transport limiting current conditions when compared to a microdisc of equivalent size. This is not simply due to a difference in the effective areas of the electrodes as the difference is frequency (diffusion layer thickness) dependent; it can instead be attributed to the effects of enhanced diffusion at the corners of the microsquares on the growing diffusion layer.
authors.affiliation: School of Chemistry, The University of Edinburgh, Joseph Black Building, King's Buildings, West Mains Road, Edinburgh, EH9 3JJ, UK.
authors.forename: Helena L
authors.initials: HL
authors.lastname: Woodvine
authors.forename: Jonathan G
authors.initials: JG
authors.lastname: Terry
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Walton
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Mount