Temperature light transmission effects

Fig. 1—The effect of temperature on the light transmission of 2% HPMCK15Mgels in water containing Na2HP04.

Fig. 6.20 The thermo-optic effect of MBBA. The temperature range for the nematic (liquid crystal) phase is 21-48 °C. The light transmission variations are shown for the temperature change of a part of the liquid crystal (LC) cell. The temperature is changed by the laser beam irradiatioiL The (SS) and (TS) do not occur to the cell for the temperature change of a whole area [84,85]. As for the transmission reference, the transmission through a cell in an isotropic phase is taken as 100 %. This reference is applied for results hereafter. 05 opaque solid state, M meso (nematic)-phase, 55 semitransparent solid state, I isotropic (liquid) phase, TS transparent solid state...

A similar combination of ultrasound and photocatalysis has also been reported to destroy 2,4,6-trichlorophenol in aqueous solution [39]. An ultrasonic probe (22 kHz) with a uv light source (15 W) was used to examine the effect of changing such operating conditions as ultrasonic intensity, reaction temperature and uv transmission. The experiments involved using 2,4,6-trichlorophenol (100 ppm) and TiOj (0.1 g L ) and showed that the degradation rates increased with the temperature of the solution. The cumulative effect was more pronounced at lower ultrasonic intensities with little additional benefit derived at increased ultrasonic powers. 

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