What are the prospects for graphene applications?

Graphene is a two-dimensional crystal, graphene unique structure makes it have excellent electrical, mechanical, thermal and optical properties, such as graphene has 100 times the silicon ultra high carrier mobility, the intensity of up to 130 gpa, good flexibility and nearly 20% of stretching rate, high thermal conductivity, specific surface area of up to 2600 m2 / g, and almost transparent, within the wide band of light absorption is only 2.3%. These excellent physical properties enable graphene to show great potential applications in rf transistors, ultra-sensitive sensors, flexible and transparent conductive films, ultra-strong and high-conductivity composites, high-performance lithium ion batteries and supercapacitors.

Although graphene has yet to achieve large-scale industrialization, but the market for the applications of graphene is good, the current research results showed that graphene in the future will be widely used in the following four areas.

1. Electronic materials field

As electrode materials, is an excellent cathode materials, graphene is considered to replace silicon chips. In addition, graphene in flexible screens, wearable devices, such as solar charging application has yet to be in the field of mining.

Large, Manchester, England has developed only 10 to 40 atoms thickness of graphene LED screen, have a thin, flexible features. This means that in the future, the screen of the electronic equipment can be further reduced thickness, more flexible, even achieve overall flexibility.

Graphene in the field of wearable device also has a certain application space. Ireland, for example, scientists are developing flexible wearable sensors based on graphene, and found that the sensor can detect the user's most subtle movements, including breathing and pulse tracing. In addition, the sensor can realize the power supply, maybe in the future can be used in smart clothes.

2. Cooling material fields

Metal materials are difficult to machine in cooling applications, expend energy, density, conductivity, easy deformation and waste recycling, and many other problems, almost without too much of a price cut space. And graphene thermal conductive plastics such as nanotechnology applications in LED lighting products such as heat dissipation, and the system cost can reduce at least 30%. Graphene is a composed of carbon atoms in single chip structure of nano new material, is found in almost perfect surface atomic structure, its excellent conductivity, thermal conductivity and thermal performance for all walks of life are on their high hopes.

Graphene is two-dimensional monolayer of carbon atoms crystals, compared with 3 d material, its low dimensional structure can significantly cut grain boundary in the boundary of the phonon scattering, and given its special phonon dispersion model. Fast heat conduction and thermal properties of graphene has made graphene, excellent heat dissipation material can be used in smart phones, tablets, high-power led lighting energy saving,special circuit, laser weapon, heat dissipation.

3. The biomedical field

Graphene has outstanding mechanical properties and biocompatibility, and use it as a reinforcing filler can significantly improve the mechanical properties of biological materials.

Biosensor is a life important research direction in the field of analytical chemistry and biomedical, has been widely used in clinical diagnosis and treatment of disease research. Graphene is made of rapid development in the field of biosensors analysis of life has important practical significance. In genome sequencing technology, DNA sensors recently successfully developed, is a kind of graphene based class field effect transistor devices, can detect the rotation of the DNA structure and position. The sensor to take advantage of graphene's electrical properties, and successfully achieve the function of detecting DNA sequence micro.

4. The military field

Graphene from China industry technology innovation strategic alliance (hereinafter referred to as alliance), to promote the application of graphene in the field of military industry, January 16, 2015, union military applications committee set up opening ceremony will be held.

Our government andspecial special leaders and experts of graphene in military application prospect in the field of great concern. It is reported, earlier this year, in Harbin "graphene military application technology seminar" on, the generalspecials department, the defense industry bureau, the military industry group leaders, experts, and graphene industry experts and entrepreneurs, military industry and supporting people mouth unit representatives discussion graphene in military application prospect.

Due to the graphene has high conductivity, high tenacity, high strength, large specific surface characteristics and the personage inside course of study thinks, graphene is widely applied in the fields such asspecial defense industry. It is reported, the scientists found that graphene can do space power. Through movement under the action of the graphene in light of research has shown that graphene materials can converts light energy into kinetic energy, it marks the graphene materials will become a new source of power, the power supply will be much higher than produced by light pressure phenomenon of power supply. In the future, graphene may for planetary exploration, such asspecial orbit to provide endless power.

Conclusion

Graphene because of superior properties, the industry is expected in the next five to 10 years, the global graphene industry will exceed $100 billion. Optimists think that graphene market potential size of at least one trillion yuan of above. In terms of its current situation, the biggest obstacle of marketization of graphene is market demand and price, lu yao, graphene future industrialization need government support, and research and development personnel of innovation, believe that through the joint efforts, the graphene will shine brilliantly in more fields.

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