Applied Physics Express (Jan 2024)

Self-traceable angle standards with simplified traceability chain for dimensional metrology

  • Xiao Deng,
  • Junyu Shen,
  • Yingfan Xiong,
  • Jinming Gou,
  • Zhaohui Tang,
  • Guangxu Xiao,
  • Zhijun Yin,
  • Dongbai Xue,
  • Yushu Shi,
  • Zhoumiao Shi,
  • Yuying Xie,
  • Xinbin Cheng,
  • Tongbao Li

DOI
https://doi.org/10.35848/1882-0786/ad87a9
Journal volume & issue
Vol. 17, no. 11
p. 115001

Abstract

Read online

Traceability is a fundamental issue for ensuring accuracy of nanometrology. A shortened traceability chain is advantageous for reducing calibration steps, thus reducing errors and raising application efficiency. A novel kind of two-dimensional grating is manufactured by atom lithography, whose pitch and (orthogonal) angle values are directly determined by natural constants, offering a feasible approach for effectively shortening the traceability chain. The PTB’s calibration results show that the two-dimensional grating has excellent orthogonality with a deviation of only 0.001°. The application of two-dimensional grating is demonstrated for the characterization of the angular distortion of a SEM, showing its great application potential.

Keywords