Overview
ISO/TR 19733:2019 - "Nanotechnologies - Matrix of properties and measurement techniques for graphene and related two‑dimensional (2D) materials" provides a practical matrix linking key graphene and 2D material properties to commercially available measurement techniques. The technical report organizes chemical, physical, electrical, optical, thermal and mechanical measurands and maps them to characterization methods commonly used in research, quality control and standardization activities.
Keywords: ISO/TR 19733:2019, graphene measurement matrix, graphene characterization, 2D materials measurement techniques, nanotechnology standards.
Key Topics
- Scope and purpose: a cross‑reference matrix to guide selection of measurement methods for graphene and related 2D materials (e.g., graphene oxide, reduced graphene oxide, hBN, MoS2).
- Terminology: aligns with ISO/TS 80004-13 vocabulary for graphene and 2D materials to ensure consistent definitions (monolayer, few‑layer, 2D material).
- Properties and measurands:
- Structural: crystal defects, domain (grain) size, flake size, number of layers, stacking angle, surface area, thickness.
- Chemical: metal content, non‑graphene residues, oxygen content.
- Mechanical: elastic modulus.
- Thermal: thermal conductivity.
- Optical: optical transmittance.
- Electrical/electronic: charge carrier concentration, mobility, sheet resistance, work function.
- Measurement techniques referenced: atomic force microscopy (AFM), BET surface area, Raman spectroscopy, TEM/SEM, STM, XPS, XRD, UV‑VIS‑NIR, FT‑IR, TGA, SIMS, ICP‑MS, EPMA, ESR, KPFM, LEEM, UPS, Hall bar and 4‑point probe electrical methods, titration, combustion analysis, and others.
Applications and Practical Value
- Material characterization: helps labs choose appropriate, commercially available techniques to quantify key graphene properties.
- Quality control & production: supports manufacturers and suppliers in selecting methods for batch acceptance, impurity and layer‑count verification.
- Device development: useful to electronics, optoelectronics and energy device developers (flexible displays, OLEDs, solar cells, supercapacitors, EMI shielding) needing specific material performance metrics.
- Standard development & metrology: serves as an initial guide for creating or harmonizing international standards and interlaboratory comparisons.
Who Should Use This Standard
- Materials scientists, nanotechnology researchers and metrologists
- QC/QA engineers at graphene/2D material producers
- Instrument vendors and testing laboratories
- Standards bodies developing measurement protocols
Related Standards
- ISO/TS 80004-13 - Vocabulary for graphene and related 2D materials (normative reference used in ISO/TR 19733:2019)
ISO/TR 19733:2019 is a practical reference to streamline selection of validated measurement techniques for consistent, comparable characterization of graphene and related 2D materials.