Patent ID: 11954546
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Micro-structural and nano-technology (Chemistry)
Classification: CPC C  G  B | IPC B  G

Claim 11:
12. An individual authentication method comprising:
preparing a structure for individual authentication in which a pillar pattern region including a plurality of nanopillars formed of synthetic quartz glass is formed on at least a part of a surface portion of a synthetic quartz glass substrate, and
vertically pressing at least some of the nanopillars formed in the pillar pattern region of the structure for individual authentication to cause plastic deformation, and identifying a pillar pattern including the deformed nanopillars, wherein
in the pillar pattern region, the nanopillars have an indentation elastic modulus of 35 to 100 GPa as measured by a nanoindentation method.