What is the effect of graphene on the body
1. Accelerate the osteogenic differentiation of human bone marrow.
Graphene is used to accelerate the osteogenic differentiation of human bone marrow mesenchymal stem cells, and it is also used to make biosensors for epitaxial graphene on silicon carbide.
2. As a nerve interface electrode.
Due to its flexibility, biocompatibility and conductivity, graphene electrodes are much more stable in vivo than tungsten or silicon electrodes. Graphene can be used as a nerve interface electrode without changing or destroying properties such as signal strength or scar tissue formation.
3. Inhibit the growth of E. coli.
Graphene oxide is very effective in inhibiting the growth of Escherichia coli without harming human cells.
4. Detect dopamine and glucose.
Graphene is an ideal material for electrochemical biosensors. Sensors made of graphene have good sensitivity for detecting dopamine and glucose in medicine.
Graphene has a variety of properties and is now widely used in aerospace, medical inspection, materials, mechanics and other fields.
Graphene is one of the materials with the highest known strength. It also has good toughness and can be bent. The theoretical Young's modulus of graphene is 1.0 TPa and the inherent tensile strength is 130 GPa.
The reduced graphene modified by hydrogen plasma also has very good strength, and the average modulus can be greater than 0.25 TPa. Graphene paper composed of graphene flakes has many holes, so the graphene paper is very brittle. However, the functionalized graphene is obtained by oxidation, and then the graphene paper made of functionalized graphene will be extremely strong and tough.
Graphene has very good thermal conductivity. The thermal conductivity of pure defect-free single-layer graphene is as high as 5300W/mK, which is by far the highest thermal conductivity carbon material, which is higher than single-walled carbon nanotubes (3500W/mK) and multi-walled carbon nanotubes (3000W/mK) . When it is used as a carrier, the thermal conductivity can reach 600W/mK. To
3. Optical characteristics:
Graphene has very good optical properties, with an absorption rate of approximately 2.3% in a wide wavelength range, and it looks almost transparent. Within the thickness of several layers of graphene, the absorption rate increases by 2.3% for each additional layer of thickness. Large-area graphene films also have excellent optical properties, and their optical properties change with the thickness of graphene.
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