studied using samples produced by the previously described method of example 1 a polymer layer of nylon 11 was first produced on each glass ground by the evaporation method followed by laying the thin layers of various metals thereon by the evaporation method to produce the samples after maintaining the samples at 100 u00b0 c for 30 minutes in the isothermal bath the coloration of the polymer layer and the size of the fine grains of each metal or metal oxide penetrating into the polymer layer were measured with the transmission electron microscope the results are shown in table 4 table 4__________________________________________________________________________ embodiment 5 1 5 2 5 3 5 4 5 5 5 6__________________________________________________________________________metal gold silver iron zinc cerium coppercolor of film clear and clear and clear and clear and clear and clear and red yellow dark dark red yellow yellow yellow yellow greengrain size of 1 10 1 10 1 100 1 100 1 10 1 20metal or metaloxide nm __________________________________________________________________________ according to the above data there occurred the diffusion and penetration by metals or metal oxides into the polymer layer irrespective of the kinds of metals in addition the grain size distribution of the fine grains of gold silver and copper oxide respectively was observed from the transmission electron microphotographs the results being shown in fig1 gold fine grains fig1 silver fine grains and fig1 copper oxide fine grains these results show that the.