Figure 2
From: Optical Addressing of Multi-Colour Photochromic Material Mixture for Volumetric Display
Fundamental experiment using a PM of one colour.
(a) PM dissolved in toluene solution is coloured by UV irradiation and decoloured by Vis irradiation. (b) Absorption spectra of PM solution. For decolouration, PM must absorb light in the visible range. (c) Experimental setup. (d) Colour changes of PM volume after irradiations (bottom) performed in the illustrated manner (top). (e) Change in pixel values (intensities) of photographs in Fig. 2d with respect to depth direction (Z axis).
