1. In Situ Laser-Induced Fabrication of a Ruthenium-Based Microelectrode for Non-Enzymatic Dopamine Sensing
- Author
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Mikhail N. Ryazantsev, Vladimir N. Mironov, Daniil D. Stupin, Anastasiia E. Grishankina, Ilya I. Tumkin, Alexey I. Lihachev, Maxim S. Panov, Daniil M. Strashkov, and Evgeniia M. Khairullina
- Subjects
Fabrication ,Materials science ,Scanning electron microscope ,chemistry.chemical_element ,02 engineering and technology ,Electrochemistry ,lcsh:Technology ,01 natural sciences ,Article ,law.invention ,law ,General Materials Science ,ruthenium ,lcsh:Microscopy ,lcsh:QC120-168.85 ,laser-induced metal deposition ,Detection limit ,lcsh:QH201-278.5 ,lcsh:T ,business.industry ,010401 analytical chemistry ,021001 nanoscience & nanotechnology ,Laser ,Microstructure ,0104 chemical sciences ,Ruthenium ,Microelectrode ,chemistry ,lcsh:TA1-2040 ,Optoelectronics ,lcsh:Descriptive and experimental mechanics ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,dopamine ,lcsh:Engineering (General). Civil engineering (General) ,0210 nano-technology ,business ,lcsh:TK1-9971 ,non-enzymatic sensors - Abstract
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 &mu, m pores and 10 nm zigzag cracks. The fabricated material exhibited excellent electrochemical properties toward non-enzymatic dopamine sensing, including high sensitivity (858.5 and 509.1 &mu, A mM&minus, 1 cm&minus, 2), a low detection limit (0.13 and 0.15 &mu, M), as well as good selectivity and stability.
- Published
- 2020
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