3D-nanomachining using corner lithography

We present a fabrication method to create 3D nano structures without the need for nano lithography. The method, named "corner lithography" is based on conformal deposition and subsequent isotropic thinning of a thin film. The material that remains in sharp concave corners is either used as a mask or directly as structural material. The method is demonstrated for nano scale modifications of pyramidal tips, as well as the creation of suspended nanowires.