Patent ID: 10553444

Abstract:
A method of making nanoscale belts including: providing a semiconductor thin film, placing stripe masks on the semiconductor thin film, the thickness of the stripe masks is H, the spacing distance between adjacent stripe masks is L; depositing a first thin film layer along a first direction, the thickness of the first thin film layer is D, a first angle between first direction and a direction along thickness of the stripe masks is θ1, θ1<tan−1(L/H); depositing a second thin film layer along a second direction, a second angle between second direction and the direction along thickness of the stripe masks is θ2, θ2<tan−1[L/(H+D)], 0<L−H tan θ1−(H+D)tan θ2<10 nm, the first thin film layer partly overlaps with the second thin film layer to form an overlapping structure; dry etching the first thin film layer and the second thin film layer to obtain a nanoscale microstructure; etching the semiconductor thin film.