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The NIST silicon lattice comparator upgrade
Marcus H Mendenhall1, James P Cline1, Csilla I Szabo1
1National Institute of Standards and Technology, U.S. Department of Commerce, 100 Bureau Dr., Gaithersburg, Maryland 20899, USA.
The Review of Scientific Instruments
|October 3, 2023
Summary
The NIST silicon lattice comparator was upgraded to enhance data collection precision. This updated instrument offers improved stability and reduced operator involvement for silicon lattice spacing measurements.
Area of Science:
- Materials Science
- Metrology
- Solid State Physics
Background:
- The NIST silicon lattice comparator has been a key instrument since the 1970s.
- It measures lattice spacing differences in silicon with high precision (Δd/d ≈ 6 × 10-9).
Purpose of the Study:
- To detail recent upgrades to the NIST silicon lattice comparator's control systems and mechanics.
- To report on the performance improvements resulting from these upgrades.
Main Methods:
- The study involved a comprehensive update of the instrument's control systems.
- Mechanical components of the comparator were also modernized.
Main Results:
- The upgraded instrument demonstrates enhanced data collection stability.
- Reduced settling time of the instrument was observed post-upgrade.
- Less operator intervention is now required for data acquisition.
Conclusions:
- The modernized NIST silicon lattice comparator offers superior performance for precise silicon lattice spacing measurements.
- These upgrades enhance the reliability and efficiency of metrological தரவு collection.
- The instrument remains a critical tool for high-precision materials analysis.
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