Home / Standards / GB/T 40069-2021 GB/T 40069-2021 Active Nanotechnologies—Measurement of the number of layers of graphene-related two-dimensional (2D) materials—Raman spectroscopy method 纳米技术 石墨烯相关二维材料的层数测量 拉曼光谱法 Standard Type GBT ICS 17.180.30 CCS N35 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 中国科学院 Drafting Unit N/A