Title :
In-Line Concentration Measurement of Nanoliter Liquid Sample Using Low-Coherence Spectral Interferometry
Author :
Tomic, Milos ; Djinovic, Zoran ; Vujanic, Aleksandar
Author_Institution :
Inst. bezbednosti, Belgrade
Abstract :
A method for in-line measurement of the refraction index and the concentration of binary liquid mixture in a nanoliter volume is presented. Low-coherence spectral interferometric technique, based on fiber optic Mach-Zehnder interferometer, is applied for measuring the liquid refraction index, from which its volume fractions are found. The accuracy of volume fractions measurement, of about plusmn0.2%, was predominantly determined by the accuracy and resolution of reading the light spectrum. The data rate has been limited to 40 Hz by the time of the light spectrum capturing
Keywords :
Mach-Zehnder interferometers; chemical analysis; chemical variables measurement; light interferometry; liquid mixtures; refractive index measurement; 40 Hz; binary liquid mixture concentration; fiber optic Mach-Zehnder interferometer; in-line concentration measurement; light spectrum; low-coherence spectral interferometry; nanoliter liquid sample; refraction index measurement; volume fractions measurement; Automatic control; Biochemical analysis; Chemical analysis; Laboratories; Liquids; Optical fibers; Optical interferometry; Optical refraction; Optical sensors; Volume measurement;
Conference_Titel :
Microelectronics, 2006 25th International Conference on
Conference_Location :
Belgrade
Print_ISBN :
1-4244-0117-8
DOI :
10.1109/ICMEL.2006.1650935
