In Situ Laser-Induced Fabrication of a Ruthenium-Based Microelectrode for Non-Enzymatic Dopamine Sensing

Maxim S. Panov, Anastasiia E. Grishankina, Daniil D. Stupin, Alexey I. Lihachev, Vladimir N. Mironov, Daniil M. Strashkov, Evgeniia M. Khairullina, Ilya I. Tumkin, Mikhail N. Ryazantsev
2020 Materials  
In this paper, we propose a fast and simple approach for the fabrication of the electrocatalytically active ruthenium-containing microstructures using a laser-induced metal deposition technique. The results of scanning electron microscopy and electrical impedance spectroscopy (EIS) demonstrate that the fabricated ruthenium-based microelectrode had a highly developed surface composed of 10 μm pores and 10 nm zigzag cracks. The fabricated material exhibited excellent electrochemical properties
more » ... mical properties toward non-enzymatic dopamine sensing, including high sensitivity (858.5 and 509.1 μA mM−1 cm−2), a low detection limit (0.13 and 0.15 μM), as well as good selectivity and stability.
doi:10.3390/ma13235385 pmid:33260836 fatcat:azhcdfjx2fft5amg6eob6wj73y