Fabrication of microcantilever with a silicon tip prepared by anodization

The fabrication process of a microcantilever with a silicon tip prepared by anodization for an atomic force microscope(AFM) is demonstrated. The silicon tip having a high aspect ratio can be prepared using preferential anodization of a silicon wafer with n / p junction. The microcantilever is fabricated by patterning a silicon nitride film deposited on the anodized wafer. The silicon tip is examined by observing the surface morphology of an anisotropically etched silicon step and the grains of a vacuum evaporated Au film.