Graphene is a new material in which carbon atoms connected by sp2 hybrids are closely packed into a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical, and mechanical properties, and it has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery. Based on existing research results, the first commercial applications may be in the fields of mobile devices, aerospace, and new energy batteries. The acquisition of high-quality graphene is the material basis for ensuring the characteristics of its devices. As a professional reliability third-party testing organization, T,C&A Lab can provide Graphene Testing service according to ISO, ASTM standards and industry requirements. Welcome to contact our experts for consultation.
The products we can test include but not limited to:
- Single-layer graphene: Refers to a kind of two-dimensional carbon material which consists of a layer of carbon atoms packed periodically and closely with the structure of benzene ring.
- Bilayer or double-layer graphene: Refers to a kind of two-dimensional carbon material composed of two layers of carbon atoms packed periodically and closely with benzene ring structure and stacked in different stacking ways (including AB stacking, AA stacking, etc.).
- Few-layer: Refers to a two-dimensional carbon material composed of 3-10 layers of carbon atoms packed periodically and closely with benzene ring structure and stacked in different ways (including ABC stacking, ABA stacking, etc.).
- Multi-layer graphene: Refers to a kind of two-dimensional carbon material composed of carbon atoms with periodic close stacking of benzene ring structure with a thickness of more than 10 layers and less than 10nm, which are stacked in different ways (including ABC stacking, ABA stacking, etc.).
Graphene testing services include but not limited to:
- Scanning electron microscope (SEM), scanning tunneling microscope (STM), transmission electron microscope (TEM) – Characterize the growth domain and surface morphology.
- Atomic force microscopy (AFM) – Characterizes surface morphology, thickness, layer uniformity, and domain growth.
- Raman spectroscopy – Identify graphene sheets and obtain layer number information
- Infrared spectrum – Evaluation of the existence of functional groups.
- UV-vis spectrum – Helps to evaluate the difference between graphene oxide and reduced graphene.
- X-ray diffraction (X-ray powder diffraction) – Used to analyze the crystalline phase.
- Photoelectron spectroscopy (X-ray photoelectron spectroscopy) – Analysis of surface chemical composition and bonding.
- NMR – Obtain structural information, such as sp2 and sp3 carbon information.
- Dynamic light scattering (dynamic light scattering and photon correlation spectroscopy) – Used to characterize or measure fluid size and submicron particles.
- DPI (dual polarization Interferometry) – Helps to characterize the surface interaction between graphite oxide and other molecules.
- Mechanical performance testing
- Young's modulus
- Poisson's ratio
- Expansion test
- Surface tension (relaxation and self-tightening of graphene film)
- The gas transmission rate of the graphene film
- Thermal performance and thermal effect analysis
- Thermal conductivity
- Thermogravimetric analysis (TGA) – Total carbon content
- Thermal stability
Standards we test to
- ASTM E3220
- ISO/TS 21356, ISO/TS 80004, IEC/CD 62565-3-1, ISO/TR 19733, IEC/WD 62607
In addition, the experts in our Graphene Testing Laboratory also provide a variety of custom services as your needs and requirements. Let's discuss the custom services with our experts for free.
Note: the service is for research use only and not intended for any clinical use.