Amines Band electrode Electrochemical processing Electrochemistry Electrodes Femtosecond laser micromachining Flow rate Fluidic devices High refractive Mach-Zehnder interferometer Mach-Zehnder interferometers Microcavities Microfluidics Microfluidics systems Neurophysiology Optical data processing Optical fiber sensor Optical fibers Picoliters Probes Redox probe Redox reactions Refractive index Refractive index sensing Refractive index sensitivity Single-mode optical fibre anthrapyrazoles antitumor activity multivariate adaptive regressions splines quantitative structure-activity relationships (QSAR)