Silver Films as Rewritable Imaging Media for Electronic Paper

Abstract

We have recently discovered an easy method for preparing colored Ag films using an aqueous solution of specific sulfide as a coloring agent. The driving force of coloration can be considered to be thin film interference due to the Ag₂S layer on the Ag film. On the other hand, electronic papers which have high quality color are widely required. The focus of this present work is to explore the possibility of these color changeable Ag films as rewritable media such as in electronic paper. We found that our Ag films have a potential to be used as rewritable media by controlling preparation conditions.