The ultimate goal of current research on carbon nanotubes(CNTs)is to make breakthroughs that advance nanotechnological applications of bulk CNT materials.Especially,there has been growing interest in CNT thin films because of their unique and usually enhanced properties and tremendous potential as components for use in nano-electronic and nano-mechanical device applications or as structural elements in various devices. If a synthetic or a post processing method can produce high yield of nanotube thin films,these structures will provide tremendous potential for fundamental research on these devices.This review will address the synthesis,the post processing and the device applications of self-assembled nanotube thin films. The ultimate goal of current research on carbon nanotubes (CNTs) is to make breakthroughs that advance nanotechnological applications of bulk CNT materials. Especially, there has been growing interest in CNT thin films because of their unique and usually enhanced properties and tremendous potential as components for use in nano-electronic and nano-mechanical device applications or as structural elements in various devices. If a synthetic or a post processing method can produce high yield of nanotube thin films, these structures will provide tremendous potential for fundamental research on these devices. review will address the synthesis, the post processing and the device applications of self-assembled nanotube thin films.