Fabrication of highly dense conical nanostructures and their subsequent controlled metallization make them ideal candidates for enhancing cold cathode electron emission efficiency. For instance, hierarchical growth of self-assembled noble metal...
Production of superhydrophobic polytetrafluoroethylene (PTFE) by Ar plasma etching is challenging as it leads to defluorination, resulting in a hydrophilic surface. The effect of radiofrequency power, treatment time, impurity, and surface temperature on Ar plasma‐treated PTFE was investigated for producing a large‐area superhydrophobic PTFE surface. To avoid impurity and substrate temperature effects, a single electrode‐based arrangement with a sacrificial PTFE disc behind the specimen was used for plasma discharge. After 5 min treatment at 100 W, the surface became superhydrophobic (water contact angle = 156°) due to the formation of isotropic nanostructures. However, 30 min of plasma treatment caused severe chemical changes resulting in a hydrophilic surface (water contact angle = 14°). A yellowish layer was formed on the surface due to crosslinking, redeposition of fluorocarbon species, and iron impurities from the plasma system confirmed by X‐ray photoelectron spectroscopy analysis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.