A process allowing for control over the 3D motion of catalyst nanostructures during Metal-assisted Chemical Etching by their local pinning prior to etching is developed. Topologically complex 3D structures that are partially located within the etched silicon and partially located above the silicon surface can be fabricated repeatedly with high degree of control over the rotation direction and the etch rate.
Citation: Advanced Materials
Pub Type: Journals
3D fabrication, FIB, MaCE, Metal-assisted Chemical Etching