Valid

GB/T 40128-2021Surface chemical analysis—Atomic force microscopy—Test method for thickness of the two-dimensional layered molybdenum disulfide nanosheets (English PDF)

表面化学分析原子力显微术二硫化钼片层材料厚度测量方法

Preview PDF

This is a limited preview

Buy now to download the full PDF (17 pages)

Need quotation for your management?

Get a formal quotation for GB/T 40128-2021 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 21, 2021

Implementation date

December 1, 2021

Scope

GB/T 40128-2021 is the English-translated version of 表面化学分析原子力显微术二硫化钼片层材料厚度测量方法.

GB/T 40128-2021 describes how to measure the thickness of layered molybdenum disulfide (MoS2) nanosheets with an atomic force microscope. It applies to nanosheets transferred to or grown on the surface of a solid substrate and no more than 100 nm thick, and the method may also serve as a reference for other similar nanosheet materials.

The document defines the terms it uses, such as nanoscale, nanomaterial and nano-object, and then gives an overview of the method, the equipment, reagents and materials, sample preparation, the measurement steps and the measurement report.

Informative annexes explain how layered MoS2 nanosheets are prepared and characterised, work through examples of thickness measurement and propose a report format. It was issued on 21 May 2021 and has applied since 1 December 2021.

Found what you need?

Document preview — GB/T 40128-2021

National Standard of the People's Republic of China

ICS: 71.040.40
Classification: G 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Method overview
5 Equipment
6 Reagents and materials
7 Sample preparation
8 Measurement step
9 Measurement report
Appendix A (informative) Preparation method and morphology characterization of layered MoS2 nanosheets
Appendix B (informative) Example of thickness measurement of layered MoS2 nanosheets
Appendix C (informative) Recommended measurement report format
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies a method for measuring the thickness of layered molybdenum disulfide nanosheets using atomic force microscopy.

This document is suitable for the measurement of the thickness of layered molybdenum disulfide nanosheets transferred or grown on the surface of a solid substrate.

The thickness of molybdenum sulfide nanosheets is no more than 100nm, and the thickness measurement of other similar nanosheet materials can also refer to this method.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 30544.1 Nano Technology Terminology Part 1: Core Terminology

GB/T 30544.6 Nanotechnology terminology Part 6: Characterization of nano-objects

GB/T 30544.13 Nanotechnology terminology Part 13: Graphene and related two-dimensional materials

GB/T 32269 Terms and definitions of nanotechnology and nanoobjects Nanoparticles, nanofibers and nanosheets

GB/T 33714 Nanotechnology, Nanoparticle Size Measurement, Atomic Force Microscopy

3 Terms and definitions

GB/T 32269, GB/T 30544.1, GB/T 30544.6 and GB/T 30544.13 and the following terms and definitions apply In this document.

3.1 Nanoscale

It is in the size range between 1nm and 100nm.

Note 1. This size range usually, but not exclusively, exhibits characteristics that cannot be extrapolated from larger sizes. For these characteristics, the upper and lower limits of the scale Is approximate.

Note 2. The purpose of introducing a lower limit (about 1nm) in this definition is to avoid considering a single atom or cluster of atoms as a nano-object or a nano-structure unit. [Source: GB/T 32269-2015, 2.1]

3.2 Nanomaterial

Any material whose external dimension, internal or surface structure is at the nanometer scale. [Source: GB/T 30544.1-2014, 2.4, with modification]

3.3 Nano-object

One-dimensional, two-dimensional, or three-dimensional objects whose outer dimensions are on the nanoscale

Note: A general term used for all nano-scale objects that are separated from each other. [Source: GB/T 32269-2015, 2.2]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 18295-2026|GB/T 47076-2026|GB/T 47663-2026|GB/T 6904-2026|GB/T 19500-2025|GB/T 45459-2025

How to Download GB/T 40128-2021

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.