Combining irradiation and lithography to engineer advanced conducting materials

https://techxplore.com/news/2023-04-combining-irradiation-lithography-advanced-materials.html

"scalable topological surface edge arrays on antimony telluride (Sb2Te3) where surface edges conductive while bulk layer beneath remained insulator... crystalline state of topological insulator Sb2Te3 modified using focused-ion beam to define surface electrnics... amorphous and quasicrystalline topological insulators...  transformation possible according to theory, but no universal pathway and materials, such as antimony telluride, are instead converted to so-called trivial insulators... AI and space applications"

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