Study of dimensional measurement of micro-hole by using a high-sensitivity probing system with a nanopipette ball probe

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A new type probing system has been developed for the dimansional measurement of micro-holes. The stylus used in this study is consisted of a glass nanopipette and micro glass sphere. By attaching the micro-sphere at the edge of the glass nanopipette, the stylus tip with the diameter of less than 10 micrometer can maintain the uniform shape from all directions.The contact detection between the stylus tip and the measuring surface can be realized by utilizing the method of shear-force detection which employ the interaction force owing to the meniscus layer. It has been verified that the developed probing system has the ability to measure the dimensional measurement with nanometric resolution and sub-micrometric measurement accuracy by using the nanopipette ball stylus.