Fabrication of carbon, gold, platinum, silver, and mercury ultramicroelectrodes with controlled geometry.

摘要: A simple, fast, and reproducible method for the fabrication of disk ultramicroelectrodes (UMEs) with controlled geometry is reported. The use prepulled soda-lime glass capillaries allows one to bypass irreproducible torch-sealing experimentally challenging tip-sharpening steps used in conventional protocols. micron-sized electroactive wire sealed inside this capillary producing UMEs a highly geometry. Total time (1 h) experimental difficulty are significantly reduced. Disk various diameters cores were fabricated, including carbon fiber (7 11 μm), gold (10 25 platinum silver (25 mercury μm). ratio insulating sheath core was 2.5–3.6. Silver also produce Ag/AgCl microreference electrode. This general can readily be applied other could allow any research group high quality d...