The hottest nano in life

"Nano" in life (Part 2)

Abstract: nano "in life

key words: nanotechnology environmental protection industry has brought revolution to traditional industries. In fact, nanotechnology is not only changing or about to change our lives, but also will bring new opportunities to China's traditional industries. Ceramics is an ancient industry in China. In recent years, the international ceramic market has been booming, and the annual trade volume of building ceramics alone has reached 5billion US dollars. However, due to the low technical content, China's ceramic industry has received a cold reception in the market by measuring, recording or controlling another equipment twice. Experts believe that applying nanotechnology to ceramic technology and producing nanocomposite or nano modified high-tech ceramics will have a huge market prospect and bring new opportunities for the recovery of China's ceramic industry. In fact, nano ceramics have been introduced in China, and the sintering temperature of nano ceramics is 400 ° C lower than that of conventional ceramics. In Germany, the fracture toughness of nano ceramics is increased by 25%. In the not too long term, scientists will develop such ceramics: extremely hard, but also unbreakable, unbreakable. Nowadays, the environmental protection industry is more and more concerned by the world. We know that excessive sulfur dioxide, carbon monoxide and nitrogen oxides in the air are harmful gases that affect human health. Gasoline and diesel used in industrial production and automobiles contain sulfur, which will produce dioxide when burning, so sulfur gas cannot be a problem. Nanotechnology can make very good catalysts with high catalytic efficiency. The sulfur content in the oil catalyzed by it is less than 0.01%, reaching the international standard. Nanoscale combustion supporting catalysts can also be added to coal to help coal burn fully, improve energy utilization and eliminate the generation of harmful gases. Nanotechnology is used in automobile exhaust, and there is a strong solution: the oxidation-reduction performance of the inspection before the zigzag experimental machine is unmatched by any other automobile exhaust purification catalyst, so that sulfur monoxide and nitrogen oxide are not produced during gasoline combustion, and there is no need for exhaust purification treatment at all. On the one hand, we are facing the shortage of water resources, on the other hand, the problem of water pollution is very serious in front of us. Sewage treatment is to remove toxic and harmful substances from sewage, but the traditional water treatment methods are inefficient, high cost, and there are problems such as secondary pollution. A new nano water purification agent has strong adsorption capacity, which is 10 ~ 20 times that of ordinary water purification agents. It can remove suspended solids, rust, odor and other pollutants in sewage. At the same time, bacteria and viruses in water can also be removed through the filter device with nano aperture, because the diameter of bacteria and viruses is larger than that of nano, which can be filtered much better if tied with a rubber band, while water molecules and minerals and elements below water molecules are retained. After purification, the water body is clear and has no odor. It becomes high-quality purified water and can be drunk completely. Nano materials can also degrade organophosphorus pesticides, urban garbage and so on. In addition, nanotechnology has great potential in biomedicine. It has even surpassed information technology and genome engineering and become the decisive technology in the 21st century. The realization of human gene control must be supported and dependent on nanotechnology. Nanotechnology can rearrange the genetic code on a micro scale. Gene biological production technology is a typical product of the combination of nanotechnology and gene biology. Human beings can use gene chips to quickly find out the errors in their genetic codes, and quickly use nanotechnology to correct them, so that the day when human beings can eliminate all kinds of genetic defects can be truly realized. In addition, bionics will be the field of nanotechnology. Human beings can create nano robots that work at the cell level and put them into our bodies. They can work in blood and cells, help us remove garbage and lesions, and return us a healthy body. One day in the future, the existing silicon chips will be replaced by nanotube components with a volume reduced by hundreds of times. Today's supercomputers like "galaxy" can be so small that they can be easily put into pockets; All the information of the library of Congress will be compressed into a candy bar sized device. Even Star Trek will become a reality because of nanotechnology, and the mystery of the universe will be quickly revealed by mankind driven by nanotechnology. All this sounds like a fantasy, But as scientists say: "150 years ago, micron became a new precision standard and the technological foundation of the industrial revolution. The countries that learned to use micron technology first and best occupied great advantages in industrial development. Similarly, the future technology will belong to those countries that wisely accepted nano as the new standard and first learned and used it. Micron technology was also considered irrelevant to farmers who used cattle to cultivate land. Indeed, micron has nothing to do with cattle But it has changed the way of farming and brought tractors. " Liuhongcan, the first 100 meter long high-temperature superconducting tape in China, recently announced that the superconducting materials research center located in Beijing General Institute of nonferrous metals has recently developed China's first 100 meter long bismuth based high-temperature superconducting tape, indicating that the research of superconducting materials in China has begun to move from the laboratory to the application stage. This technology fills the gap in the preparation of high-temperature superconducting tapes in China and is close to the international advanced level. The high temperature superconducting tape successfully developed this time is 116m long, 3.6mm wide and 0.28mm thick. It is wound in the form of a spiral tube. Measured by the full length of the four lead method, the critical current under the self field at 77K liquid nitrogen temperature (minus 168 ℃) is 12.7a, and all technical indicators have reached the domestic leading level