Patent ID: 9410260
Filing Date: 2016-08-09
CPC Classification: B81B,B81C,B82Y,C25D

Claim Text:
1. A method of forming a nano-structure, comprising: forming a multi-layered structure including i) an oxidizable material layer established on a substrate, and ii) an other oxidizable material layer established on the oxidizable material layer, the oxidizable material layer being formed of an oxidizable material having an expansion coefficient, during oxidation, that is more than 1; forming a template having pores therein by anodizing the other oxidizable material layer to form a porous anodic structure; anodizing the oxidizable material layer to form a dense oxidized layer, and nano-pillars which grow through the template into the template pores; selectively removing the entire template to expose the nano-pillars; and then anodizing a surface between the dense oxidized layer and a remaining portion of the oxidizable material layer to consume a substantially cone-shaped portion of the nano-pillars, thereby forming cylindrical nano-pillars.