Abstract
Very thin, highly oriented and crystalline films of polytetrafluoroethylene (PTFE) can be deposited onto smooth surfaces by slowly sliding under load a piece of bulk PTFE on them at a high enough temperature. They consist of very long, straight and crystalline ribbons, which may almost completely cover the substrate. Film morphologies are presented. Physical properties and possible chemical modification of these films in order to prepare conjugated polymers are briefly discussed, as well as some problems related to the deposition of highly oriented organic or polymeric overlayers on these PTFE films.
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