Title :
Biosystem with 16 highly-selective optical-channels for biological fluids analysis in the visible spectrum
Author :
Minas, G. ; Ribeiro, J.C. ; Lanceros-Mendez, S. ; Vaz, F. ; Wolffenbuttel, R.F. ; Correia, J.H.
Abstract :
This paper reports a biosystem (biological system) for analyzing biochemical substances in biological fluids. Rather than one channel, it comprises 16 highly-selective optical-channels that enable the measurement of the concentration of 16 different biochemical substances. An array of 16-optical filters with high reflectivity and low absorption loss has been designed using dielectric films. Each filter is sensitive in a single wavelength with a FWHM (Full-Width-Half-Maximum) <5 nm and peak intensity >52%. A commercially available band-pass optical filter with a band-pass wavelength in 450-600 nm is used to enable the use of a white light source for biosystem illumination. Preliminary tests with a single-channel are successfully demonstrated.
Keywords :
band-pass filters; biological fluid dynamics; dielectric thin films; optical filters; reflectivity; visible spectra; 450 to 600 nm; absorption loss; band-pass optical filter; biochemical substances; biological fluids; biosystem illumination; dielectric films; full-width-half-maximum; optical filters; optical-channels; reflectivity; visible spectra; Band pass filters; Biochemical analysis; Biological systems; Biomedical optical imaging; Dielectric measurements; Filter bank; Optical films; Optical filters; Optical sensors; Wavelength measurement;
Conference_Titel :
TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7731-1
DOI :
10.1109/SENSOR.2003.1216999
