Standard No.:	GB/T 40071-2021
English Name:	Nanotechnologies—Measurement of the number of layers of graphene-related two-dimensional (2D) materials—Optical contrast method
Chinese Name:	纳米技术 石墨烯相关二维材料的层数测量 光学对比度法
Chinese Classification:	A50    Measurement in general
Professional Classification:	GB    National Standard
ICS Classification:	17.180.30 17.180.30    Optical measuring instruments 17.180.30
Issued by:	SAMR; SAC
Issued on:	2021-05-21
Implemented on:	2021-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	8500 words
Price(USD):	255.00
Delivery:	via email in 1~3 business day

本文件规定了光学对比度法（包括反射光谱法和光学图片法）测量石墨烯相关二维材料的层数的仪器设备、样品准备、测量步骤、测试报告等内容。
本文件适用于利用机械剥离法或化学气相沉积法(CVD: chemical vapor deposition)制得的晶体质量高、横向尺寸不小于2 μm、层数不多于5的石墨烯薄片及石墨烯薄膜的层数测量。其他方法制得的石墨烯薄片及石墨烯薄膜可参照本文件执行。