It takes only a few seconds for the phone to charge? The screen of the phone can be folded and bent... These may all be possible because of the appearance of graphene, the "21st century magical material".
One of the discoverers of graphene, Nobel Prize winner Physicist Andre Heim, describes: "Graphene is as amazing to many people as Alice in Wonderland."
As one of the thinnest, hardest, and most conductive new nanomaterials found in the world, graphene is called "black gold" and is the king of new materials. Scientists even predict that graphene will completely change the 21st century. And the news about the extraordinary application of graphene is constantly emerging the thinnest light bulb in history; the phone charging takes only a few seconds...
How amazing is graphene, whether it will bring "subversive" changes to production and life, let us approach the graphene to find out!
Graphene: The Magic of "The King of New Materials"
What is this magical substance?
China is a major resource for graphite and one of the most active countries for graphene research and application development. Scientists and industry professionals are focusing on it.
Many domestic researchers and enterprises have already been involved in the research of graphene applications. With the advancement of technology, in the future, the industrialization of graphene preparation and application will be launched on a global scale. Graphene is actually a two-dimensional crystal with a thickness of one atom, which is separated from the graphite material and composed of carbon atoms. The graphite used in the pencil lead is equivalent to a stack of layers of graphene stacked together. “It is by far the thinnest and strongest material in nature, can be stretched infinitely, bent to a large extent without breaking, and can withstand a lot of pressure.†Andre Heim said that it still has Unusual thermal conductivity and electrical conductivity.
"Graphene has high conductivity and stable chemical structure. It is an ideal electrode material for mobile batteries and power supplies." Cheng Huiming, a member of the Chinese Academy of Sciences and a researcher at the Institute of Metal Research, Chinese Academy of Sciences, said graphene and electronic components. The electronic devices are further combined to increase the storage rate of other electrical storage devices.
Another peculiar thing about graphene is "zero penetration" - all gases and liquids are impermeable. This also makes the graphene products have the ability to "can not be inserted, water can not enter." It’s amazing more than that. Graphene has super-adsorption, and scientists are studying it as a filtering device for desalination, sewage treatment, etc. It has very good light transmission and is suitable as a raw material for transparent electronic products.
The key question is coming!
What is the chance of graphene entering the field of LED lighting?
In the field of LED lighting, what can graphene do? Let's take a look at the patent perspective. After a simple search in the Chinese database, it was found that the patent application for graphene in the field of lighting began in 2008, and the number of applications increased every year. So far, there have been more than 1,000 patent applications, of which more than 90% are from domestic applicant. Mainly involved in two major categories of H01L and F21S, the application in the field of F21S is basically a domestic applicant, mainly using the thermal conductivity of graphene, coating and heat dissipation on the surface of the light source or lamp, more applicants, mainly based on corporate and individual applications. There is not much to describe here.
In the field of H01L, the top ten applicants are mainly domestic research institutes and universities. The enterprises include BOE, IBM and South Korea Samsung. Among them, IBM's application is mainly in the field of power semiconductor devices, and Samsung's application involves LEDs. Lighting fields such as OLEDs and display devices. Represented by patents 2-8, a layer of graphene material (3, 4, 6, 7, 8) is added to the original structure. Due to the series of advantages of transparency, conductivity and heat conduction of graphene, it can make up for the deficiency after the addition. Thus, significant technical effects have been achieved; or the original material (patent 5) is directly replaced by a graphene material, thereby achieving remarkable technical effects. Most of the patents are improved, and the patents are relatively difficult. The strength of domestic patent applications in this type of patent is not weaker than that of foreign companies, and the long-term foundry, technicians have accumulated a lot of relevant experience, and it is easier to combine new materials. Characteristics, propose improved technical solutions.
The technical development of graphene in the field of lighting is still in the growth stage, and the leading edge of foreign companies is not obvious. Domestic enterprises and R&D institutions are strengthening their investment. It is believed that they have the opportunity to catch up with foreign technology and gain a place in the future market.
Graphene is entering the people's life from the laboratory
“The future demand for new materials is huge. For example, the application of nano-materials, graphene, cannot be extinguished with water in dangerous chemical fires, but if it is made of graphene film, using graphene materials, the mobile phone may be thinner to the hotel room in the future. The card is almost the same," said Wei Jie, a professor at the School of Economics and Management at Tsinghua University. More than 20 kinds of graphene products such as graphene physiotherapy, warmth products, high thermal conductivity graphene composite materials for LED, graphene bulletproof materials, and graphene electric heating garments were introduced.
At present, Changzhou, Jiangsu Province, which is known as the “Oriental Carbon Valleyâ€, has a service platform for graphene industry technology research and development and enterprise incubation. The Chongqing Institute of Green Intelligent Technology of the Chinese Academy of Sciences has also successfully produced a 15-inch single-layer graphene mobile phone display. Screen; graphene has been used in high-speed rail interior materials... Graphene technology is quietly affecting production and life.
"Using graphene characteristics to develop new body armor, bulletproof inserts can reach or exceed the bulletproof effect of traditional products by only 17 mm, and the weight can be reduced by 20%." Shi Jianxin, chairman of Qingdao Huagao Moen Technology Co., Ltd. said . For a long time, the battery life of smartphones has always been the biggest shortcoming. Song Lilu said that the new graphene lithium battery they developed, the charging time is greatly shortened, and the phone can be charged in a few minutes.
Chen Chengmeng, an associate researcher at the Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences pointed out that China's graphene industry development still has problems such as high production cost, product quality to be improved, and insufficient upstream and downstream interaction. "At present, the graphene industry lacks national standards, industry standards and enterprise standards, and there is no scientific unification of the quality, preparation process, testing equipment and methods of graphene," said Shi Jianxin.
The graphene industry must avoid a slamming situation and require the entire resource to be innovatively laid out to form a convergent effect. "Industrial development has its own laws. At present, the graphene industry is still in the primary application stage. In the process of quantitative change, everyone should be patient and cultivate and care for the healthy and sustainable development of this emerging industry." Qingdao High-tech Zone Energy-saving Technology and New Zhang Zhiqiang, director of the Materials Division, said.
Huawei Technologies Co., Ltd. announced that it has collaborated with the National Graphene Research Institute of the University of Manchester in the UK to study how breakthrough technologies in the field of graphene can be applied to consumer electronics and mobile communication devices. It can be expected that the mobile phone will undergo a new "revolution" after the change of the function machine to the intelligent machine - the characteristics of the graphene will make the display screen ultra-thin, ultra-light, and realize the flexibility of curling.
It will take time for the graphene era to really come
According to statistics, China's graphite ore reserves account for 75% of the world's total reserves, production accounts for about 70% of the world's total output, and has the resource base for the development of the graphene industry. Up to now, there are more than one graphene enterprises in China, and industrial clusters have been formed in Changzhou, Wuxi, Qingdao and Shenzhen.
However, many researchers have pointed out that graphene, as a new material, has to be truly market-oriented. It can be described as "a bright future and a tortuous road." The primary difficulty is limited by material production. Liu Zhongfan, an academician of the Chinese Academy of Sciences and a professor at Peking University, said that to realize the commercialization of graphene, it is necessary to produce low-cost, high-quality graphene products, but it is not easy to produce such graphene. There are still many challenges at the technical level, and batch or large-scale production has not yet been realized.
Stepper motors are known for their accurate positioning capabilities and high torque delivery at low speeds, but they require careful sizing to ensure the motor matches the load and application parameters, to minimize the possibility of lost steps or motor stalling. Adding a gearbox to a Stepper Motor system can improve the motor`s performance by decreasing the load-to-motor inertia ratio, increasing torque to the load, and reducing motor oscillations.
Geared stepper motor,Stepper motor gear reduction,Small geared stepper motor,High torque geared stepper motor,Geared stepper motor with encoder,gear stepper motor with driver
Shenzhen Maintex Intelligent Control Co., Ltd. , https://www.maintexmotor.com