title: Microscopic imaging of electrical current distribution at the electrode-electrolyte interface.
abstract: A method to directly visualize electrical current distribution at the electrode-electrolyte interface of a biopotential electrode is presented in this paper. A voltage-responsive florescent material is first coated on the surface of a bioelectrode. Then, an electric potential is used to activate the release of the florescent material while a camera acquires images at the electrode-electrolyte interface. This imaging method allows observation of microscopic electrical current distribution at the active area of the electrode, providing a new tool to optimize bioelectrode design. Our computational and experimental data demonstrate the feasibility of the florescent imaging method.
authors.lastname: Wenyan Jia
authors.lastname: Jiamin Wu
authors.lastname: Di Gao
authors.lastname: Mingui Sun
mesh_terms: D003198:Computer Simulation; D004560:Electricity; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008856:Microscopy, Fluorescence / Q000379:methods*
chemical_list: D004573:Electrolytes