Bs. Seidel et W. Faubel, MINIATURIZED PHOTOTHERMAL SENSORS AS ANALYTICAL TOOLS FOR DETECTION OF VERY SMALL VOLUMES IN CHEMICAL PROCESS-CONTROL, Optical engineering, 36(2), 1997, pp. 469-472
The application of photothermal interferometry and near-field thermal
tensing as analytical tools in liquids is described. Using the transve
rse setup, the smallest detection volumes are achieved. The setups of
both sensor systems are miniaturized, so adjustment and external influ
ences are minimized. The sensitivities of both systems are demonstrate
d with the textile dye Reactive Red as an analyte. (C) 1997 Society of
Photo-Optical Instrumentation Engineers.