Mono-disperse silver quantum dots modified formvar film.

Formvar films were treated with different doses of silver ions implantation. The implanted silver ions were found to form silver quantum dots (AgQDs) uniformly distributed in the formvar films. While density of the AgQDs increases as the implantation dose increases, their sizes are not sensitive to the dose. It was found that the formvar films implanted with AgQDs have excellent bacteria killing capability. The same implantation approach can also be extended for application in other matrices. As an example, ZnS nanoribbon was implanted with the same approach to obtain uniformly distributed AgQDs with monodispersed size.