Fig. 7From: Photonics and Nanophotonics and Information and Communication Technologies in Modern Food Packaging 1 Luminescence of ZnO nanoparticles, 2 uncoated films containing ZnO nanoparticles PVP, and 3 films coated with 1 % PVA solution and 4 10 % PVA solution, λ ex. = 330 nm, layer thickness is 10 μmBack to article page