Bulg. J. Phys. vol.31 no.3-4 (2004), pp. 130-134



Optical Properties in Polymer Stabilized Liquid Crystal Indicator Used in the Thermometry

H. Naradikian1, B. Katranchev1, T. Angelov2, R. Ugrinov2
1Laboratory "Optics and Spectroscopy", Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd, 1784 S
2Laboratory "Biomolecular Layers", Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd, 1784 Sofia
Abstract. Extending the temperature range of the ordinary thermo indicator by mixture of TLC and PMMA we achieved a better spectral sensitivity in a wider temperature range. We observed modulation of the intensity of the transmitted monochromatic light in accordance with the temperature changes. Also that sensor could be used like an ‘on-off’ fire alarm detector.

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