An embroidery process allowing for a three-dimensional shape to be embroidered in two dimensions, allowing for the cost effective and repeatable manufacturing required for use in surgically implanted medical devices. An embodiment is a method of forming a semiconductor device, the method including forming a first hard mask layer over a semiconductor device layer, forming a set of mandrels over the first hard mask layer, and forming a first spacer layer over the set of mandrels and the first hard mask layer. The lithium-nickel-manganese composite oxide is represented by the molecular formula LiLixNiyMn2MbO2-a, where: 0.