Fluorescence Detection 400–480 nm Using Microfluidic System Integrated GaP Photodiodes

Ciprofloxacin is a commonly used antibiotic and the active ingredient in a veterinary antibiotic. Detecting its presence allows us to understand its absorption process in blood as well as tissue. A portable microfluidic system has been fabricated. It operates at low bias voltage and shows a linear relationship between concentration levels and system response. Detection of concentrations down to 1 ppb of ciprofloxacin in microliters of solution was achieved.