GB/T 40071-2021 Active National standards

GB/T 40071-2021 Nanotechnologies—Measurement of the number of layers of graphene-related two-dimensional (2D) materials—Optical contrast method

Publish Date: 2021-05-21 Implement Date: 2021-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 40071-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Measurement

ICS Name: Optical measurement instruments

Publish Date: 2021-05-21

Implement Date: 2021-12-01

Pages: 16 pages

Scope

This document specifies the instrumentation, sample preparation, measurement procedures, and test reports for measuring the layer number of graphene-related two-dimensional materials using optical contrast methods (including reflectance spectroscopy and optical imaging).
This document is applicable to the measurement of the layer number of graphene flakes and graphene films obtained by mechanical exfoliation or chemical vapor deposition (CVD), which have high crystal quality, a lateral size of not less than 2 μm, and a layer number of not more than 5. The layer number of graphene flakes and graphene films obtained by other methods can be measured in accordance with this document.