Main application of Graphene

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With the gradual breakthrough in mass production and large-scale problems, the industrial application of graphene is accelerating. Also, graphene has special significance for the basic research of physics, which makes some quantum effects that can only be theoretically demonstrated in the experiment can be verified by experiments.

Let me introduce the main application of Graphene:

Sensor
Graphene can be made into a chemical sensor. This process is mainly done by the surface adsorption performance of graphene. According to some scholars' research, the sensitivity of graphene chemical detector can be compared with the limit of single molecule detection. The unique two-dimensional structure of graphene makes it very sensitive to the surrounding environment. Graphene is an ideal material for electrochemical biosensors. The sensor made of graphene has good sensitivity for detecting dopamine and glucose in medicine.

Transistor
Graphene can be used to make transistors. Due to the high stability of the graphene structure, the transistor can still work stably on a scale close to a single atom.

Flexible display
The flexible screen at the Consumer Electronics Show has attracted much attention and has become the trend of future mobile device displays. Flexibility shows that the market is broad in the future, and the prospect of graphene as a base material is also optimistic.

New energy battery
New energy batteries are also an important area of ​​graphene's earliest commercial use. The Massachusetts Institute of Technology has successfully developed a flexible photovoltaic panel with a graphene nano-coating on the surface, which can greatly reduce the cost of manufacturing transparent and deformable solar cells, which may be in small digital cameras such as night vision goggles and cameras. Applied in the device. In addition, the successful development of graphene super batteries has also solved the problem of insufficient capacity of new energy vehicle batteries and long charging time, which has greatly accelerated the development of new energy battery industry. This series of research results paved the way for the application of graphene in the new energy battery industry.

Desalination
Graphene filters are used more than other desalination technologies. When the graphene oxide film in the water environment is in intimate contact with water, a channel of about 0.9 nm width can be formed, and ions or molecules smaller than this size can pass quickly. The size of the capillary channel in the graphene film is further compressed by mechanical means, and the pore size is controlled to efficiently filter the salt in the seawater.

Graphene has the advantages of light weight, high chemical stability and high specific surface area, making it the best candidate for hydrogen storage materials.

Aerospace
Due to its high conductivity, high strength, ultra-thin and other characteristics, the application advantages of graphene in the field of aerospace military industry are also outstanding.

Photosensitive element
A new type of photosensitive element with graphene as the material of the photosensitive element is expected to have a thousand-fold improvement in sensitivity compared to the existing CMOS or CCD through a special structure, and the energy loss is only 10%. It can be used in the field of monitors and satellite imaging, and can be applied to cameras, smart phones, and the like.

Composite material
Graphene-based composite materials are an important research direction in the field of graphene applications. They exhibit excellent performance in energy storage, liquid crystal devices, electronic devices, biomaterials, sensing materials and catalyst carriers, and have broad application prospects. .

Biological
Graphene is used to accelerate the osteogenic differentiation of human bone marrow mesenchymal stem cells, and is also used to make biosensors for epitaxial graphene on silicon carbide. At the same time, graphene can act as a neural interface electrode without altering or destroying properties such as signal intensity or formation of scar tissue. Due to their flexibility, biocompatibility and electrical conductivity, graphene electrodes are much more stable in vivo than tungsten or silicon electrodes. Graphene oxide is very effective in inhibiting the growth of E. coli and does not harm human cells.

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