09114 IUPAC Gold Book - electrode array 10.1351/goldbook.09114 09114 current 1 Assembly of linked electrodes (usually microelectrodes, ultramicroelectrodes or nanoelectrodes) acting as a single electrode. By replacement of macroelectrodes with dimensions in the millimetre or centimetre range by a microelectrode array, the current density can be increased by orders of magnitude, as well as the ratio of faradaic to capacitive currents. When array electrodes are employed as generator-collector systems with two distinct potentials applied, the diffusion distance between electrodes becomes the main factor in controlling the total current. Interdigitated array electrodes are commonly employed in electrochemical sensors. electrochemical sensors https://goldbook.iupac.org/terms/view/09072 microelectrodes https://goldbook.iupac.org/terms/view/09084 nanoelectrodes https://goldbook.iupac.org/terms/view/09086 ultramicroelectrodes https://goldbook.iupac.org/terms/view/09085 PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 661 (https://doi.org/10.1515/pac-2018-0109) https://goldbook.iupac.org/terms/view/09114/html https://goldbook.iupac.org/terms/view/09114/json https://goldbook.iupac.org/terms/view/09114/plain Citation: 'electrode array' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09114 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-28T02:14:12+00:00