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High-aspect ratio metal tips attached to atomic force microscopy cantilevers with controlled angle, length, and
Lynda Cockins1, Yoichi Miyahara, Romain Stomp
1Department of Physics, McGill University, 3600 Rue University, H3A 2T8 Montreal, Canada.
Abstract:
We demonstrate a method to fabricate a high-aspect ratio metal tip attached to microfabricated cantilevers with controlled angle, length, and radius, for use in electrostatic force microscopy. A metal wire, after gluing it into a guiding slot that is cut into the cantilever, is shaped into a long, thin tip using a focused ion beam. The high-aspect ratio results in considerable reduction of the capacitive force between tip body and sample when compared to a metal coated pyramidal tip.
