Traceable nano geometric structure measurement and international comparison

Area of Science:

• Metrology and Nanotechnology
• Precision Measurement
• Artifact Characterization

Background:

• Accurate geometric structures are crucial for high-quality nano-function and electronic devices.
• International comparisons are essential for validating measurement standards.
• The Consultative Committee for Length (CCL) initiated comparisons of various artifacts in 1998.

Purpose of the Study:

• To describe the National Institute of Metrology's (NIM) participation in international artifact comparisons.
• To detail the measurement activities for step height standards, 1D-gratings, and line scales.
• To report on the characterization, instrumentation, procedures, calculations, results, and uncertainties.

Main Methods:

• Artifact characterization for step height standards, 1D-gratings, and line scales.
• Utilizing specific instruments for precise dimensional measurements.
• Implementing standardized measuring procedures and calculation methods for international comparison.

Main Results:

• Presentation of NIM's measurement results for step height standards, 1D-gratings, and line scales.
• Comparison of NIM's measurements against international benchmarks.
• Quantification of measurement uncertainty for the compared artifacts.

Conclusions:

• NIM actively contributed to international metrology efforts.
• The study provides valuable data on the accuracy of dimensional measurements for key artifacts.
• Findings support the reliability of NIM's measurement capabilities in nanotechnology and electronics.