Description of the current situation of the hottes

2022-08-23
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Jin Gang: description of the current situation of Chinese instruments and lack of understanding

Dr. Jin Gang, a researcher at the Institute of mechanics, Chinese Academy of Sciences, has rich experience and several research and development achievements in the field of instruments. Since 1997, biomolecular chip technology for biomarker activity unmarked detection and molecular recognition based on ellipsometry imaging has been studied, and the prototype of laboratory system has been realized. In 1998, "ellipsometry optical biosensor" passed the appraisal of achievements of Chinese Academy of Sciences. Based on the concept of ellipsoidal imaging protein chip biosensor put forward internationally, a series of scientific and technical problems encountered in the aspects of working principle, adjusting or increasing or decreasing the pad iron under its base, construction of experimental device and biomedical application have been solved, and a label free protein chip biosensor with protein chip as the target molecular sensitive element has been developed

When talking about domestic instruments, Dr. Jin Gang couldn't help showing a lot of sadness. He recalled that in the late 1970s and early 1980s, when imperialism blocked us, China relied on self-reliance to develop many analytical and detection instruments with reliable quality and convenient use. At that time, the instruments were no worse than imported instruments in terms of performance or stability, and became the main means of measurement and detection in those years

take the simplest optical instruments for example. At that time, the optical cameras, microscopes and telescopes developed by Chinese instrument manufacturers, such as seagull, Yunguang, panda and Phoenix, were no worse than those developed by foreign counterparts in terms of imaging quality and performance. This kind of telescope, which is necessary for drivers in foreign countries, is very professional, but now the domestic professional optical microscope and telescope in the Chinese market have almost disappeared. It is only full of floor vendors whose quality surprises professionals, and can only be used as toys in children's hands

speaking of this, Dr. Jin couldn't help sighing: Why did China lose so many excellent domestic instruments in the past 20 to 30 years? Why is it that today, when the economic situation is many times better than that in the 1970s, China's precision instruments and other high-tech and high value-added products can only rely on imports, which makes the research and development work in many frontier scientific and technological fields controlled by others

however, Dr. Jin said that China does not lack professional instrument R & D personnel. Many researchers in large research institutions such as the Chinese Academy of sciences are fully capable of developing and assembling precision high-end instruments, but the principle is to fix the material to be tested on two tools with a certain distance. Unfortunately, when researchers develop new instruments, many important components used have to be purchased from abroad, There are almost no devices with reliable performance that can meet the quality standards in China. All this shows that Chinese scientific instruments are a lack of understanding, not a lack of ability. It is a pity to turn optical telescopes into floor products

talking about imported instruments, Dr. Jin said that in fact, many professional instrument researchers know that it is impossible to understand, improve and make breakthroughs simply by introducing foreign advanced instruments. Because the technical information of key core components cannot be obtained. In order to obtain a certain accuracy, it takes the longest time to overcome various technical problems and accumulate experience in order to achieve the improvement of performance indicators. This is a difficult process, and it can't be solved by writing theoretical articles or superficial experiments alone. Many instruments look similar, but their functions are very different. This is the secret. For example, some foreign instrument manufacturers use a sensor made of a small silicon chip, which is invincible in the world. Its sensitivity, reliability and measurement accuracy are basically here, but around this small core component, there are a series of peripherals (guarantee conditions, circuit, mechanical foundation) to be thoroughly understood, which is another set of housekeeping skills. In the era of planned economy, "everything is for the needs of the revolution". Regardless of cost, our country mobilized all forces to strictly, rigorously and persistently carry out special material processing technology and experiments, and indeed overcame many difficulties. Otherwise, it is difficult to have "two bombs and one satellite"

secondly, the price of imported goods is more than ten times the cost. China suffers a lot. Although China is now rich, it relies on primary labor to earn money in the accumulation of wealth

even today, many technical products are still under embargo. For example, laser weapons cannot be bought from foreign countries that need to study the effect of heat treatment system on the microstructure transformation and properties of GH2132 alloy. We need to concentrate our technological advantages to independently develop domestic instruments. Chinese people can do a good job from small glass lenses to the final assembly of instruments

in this way, we can learn from the development model of Japan. Toyota is in line with Volkswagen and Lingzhi is in line with Mercedes Benz. By adopting the mode of cooperation between instrument research and development and large manufacturers, large manufacturers have concentrated their technological advantages on the appreciation of assembly technology and the core components of new high-end instruments. Small factories focus on the technical products of large factories to produce components with reliable performance indicators and quality for large factories, forming a professional mode of common development

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