Optical EngineeringExperimental study on the measurement of micro structures
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Measurement of micro structures is a key issue in microtechnology, and it will influence the production efficiency and quality of large-scale integrated circuits. An experimental study on the factors affecting the accuracy of measurement of micro structures has been carried out with a laboratory-built DXY-1 type linewidth measuring system. The experiment results show that the repeatability of the system is better than ±0.005 μm, and the difference between the nominal and measured values is less than ±0.02 μm.