Patent ID: 9180519
Filing Date: 2015-11-10
Classification: B22F,B81C,B82Y,C03C,C23C,G03F,Y10T

Abstract:
1. A method for fabricating three-dimensional nanostructures, comprising the steps of: (a) forming a target material layer and a polymer layer sequentially on a substrate; (b) performing a lithography process on the polymer layer to form patterned polymer structures; (c) ion-etching the target material layer to form target material-polymer composite structures including the ion-etched target material attached to the outer surface of the polymer structures; and (d) removing the polymer from the target material-polymer composite structures, thereby fabricating three-dimensional nanostructures, wherein the three-dimensional nanostructures comprises a pattern of target material having a hollow shape selected from the group consisting of a cylindrical shape, an inverse conical shape, a rectangular parallelepiped shape, a top shape, a line shape and a “