Zinc oxide (ZnO) is considered a workhorse of technological
development exhibiting excellent electrical, optical, and
chemical properties with a broad range of applications as
semiconductors, in optical devices, piezoelectric devices,
surface acoustic wave devices, sensors, transparent electrodes,
solar cells, antibacterial activity etc. Thin films or nanoscale
coating of ZnO nanoparticles on suitable substrates are viewed
with great interest for their potential applications as
substrates for functional coating, printing, UV inks, e-print,
optical communication (security-papers), protection, barriers,
portable energy, sensors, photocatalytic wallpaper with
antibacterial activity etc. Various methods like chemical,
thermal, spin coating, spray pyrolysis, pulsed laser deposition
have been used for thin film formation but they are limited to
solid supports such as metal, metal oxides, glass or other
thermally stable substrates. Coating of ZnO nanoparticles on
thermolabile surfaces is scarce and coating on paper