The paper describes technology of the LTCC (Low Temperature Co-fired Ceramics) structure which enables monitoring in biological applications. The results are achieved by light absorbance measurements of liquid sample. Described ceramic structure contains buried microfluidic channels and two co-fired glass windows as well. The signal from three LEDs (Light Emitting Diode) - red, green and blue - can be used in the absorbance measurements. These three elements are connected through the light guide switch and a polymer optical fiber. Thanks to that it is possible to switch stimulation wavelength in wide range of visible spectrum. Optical properties of the fabricated microfluidic LTCC system is investigated mostly with several concentrations of potassium permanganate in water solution. © 2012 The Authors. Published by Elsevier Ltd.
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