In the iodine technique, iodine crystals are warmed in the vicinity of a surface suspected of containing latent prints. The resulting iodine vapor reacts with lipids in the latent print which causes the print to become visible. Similarly to the powder method, the iodine method is generally usefu...
The LFP images have been also investigated using different commercial powders such as ZnSO 4 , TiO 2 and Iodine vapor for comparison with fluorescent Slg/pg-C 3 N 4 powder. The Slg/pg-C 3 N 4 powder was used to investigate the LFP images submerged in fresh water. Ultimately, the ...