Liquid Metal Personal Electronic Circuit Printer Appearance, Design Drawing and Its Composite Ink Driving Mechanism Flow Field Simulation After several years of continuous progress from basic research to application level, the scientific research team of the Institute of Physics and Chemistry, Chinese Academy of Sciences led by Liu Jing has achieved a technological breakthrough in the field of printed electronics, and developed the world’s first fully automated liquid metal personal electronic circuit printer. . Among them, some basic achievements were recently published in the journal Scientific Reports of the Nature Publishing Group. The authors of the paper are Zheng Yi, He Zhizhu, Yang Jun, and Liu Jing. At the same time, the printing equipment for personal end-users that has been developed by the team's strength has also been designed and manufactured. It will soon enter the market. The main personnel involved in R&D include Yang Yang, Chen Bowei, Jin Haijun, and Deng Zhongshan. So far, the manufacture of traditional electronic circuits is still a complex process that takes time, consumables, energy, and potential environmental pollution. Most of them can only be carried out in well-equipped and highly-invested factories. It is a dream of the global scientific community and industry to realize the direct printing of electronic circuits at any time and place. However, there are huge challenges. Both the limitations of the hardware of the equipment and the factors of high-performance electronic ink are further constrained by the inherent theoretical framework. The invention and advent of liquid metal printers completely changed the traditional model in terms of technical concepts, breaking the technological bottlenecks and barriers of personal electronics manufacturing, making it possible to quickly and freely fabricate electronic circuits at extremely low costs. Using this device, even individuals and even children without any electronic experience can use the computer to control, and they can directly print circuit patterns customized from the Internet and create their own terminal function devices within a short time. Direct download of hardware. In a Scientific Reports paper entitled Personal Electronics Printing via Tapping Mode Composite Liquid Metal Ink Delivery and Adhesion Mechanism, the research team tackled a series of key scientific and technical issues that constrain the use of liquid metal printing technology in the path to practical application. For the first time, a brand-new principle of room-temperature liquid metal printing has been established, which integrates fluid transport methods such as up-and-down hammering, in-between rotation and translational transport, transfer printing, and embossing and adhesion to substrates. The problem of the high surface tension of the metallic ink being difficult to drive by the conventional method is solved. The mechanism of the printing instability has also been initially revealed, and the obtained highly uniform printing accuracy and quality can satisfy most of the current printed circuit boards (PCBs). The request. The most critical point is that this electronic circuit printer has a very high cost performance, and its cost will be within the personal affordable range after mass production. This indicates that electronic manufacturing is moving into the civilian process. In order to demonstrate the value of this new technology in a wide range of fields, the research team has also identified pioneering applications of liquid metal electronic printers in nearly 10 directions, such as complex large-area flexible PCBs, electrical sensors, electronic art, electronic decoration, and electronics. Real-time printing and production of architectural designs, portraits, circuit units, electronic greeting cards, electronic patterns, and even functional electronic devices. In addition to bringing conceptual changes to traditional electronic engineering, this kind of instant, personalized electronic manufacturing model will also create new opportunities for cross-convergence between science and art, humanities, education, and cultural creativity. The above achievements are the results of continuous exploration by the physical and chemical team in the long-term practice. Previously, in order to achieve full-automatic printing of liquid metal and the development of electronic printers of universal significance, the research team almost exhausted all possible printing principles such as pneumatic drive, micro contact printing, screen printing, roll-to-roll printing, hot bubble Inkjet drives, laser printers, etc., but the resulting mechanism is either unable to drive metallic inks, or the degree of automation is not high, or the cost of the entire set of printing equipment is too high to enter thousands of households. It is based on the systematic exploration and repeated attempts of the liquid metal drive mechanism that a hybrid liquid metal printing method including the tapping, rotating and embossing transport mechanisms was established. Liquid metal printed electronics is a new academic frontier. The long-term accumulation of liquid metal in the Liu Jing collection for more than 10 years was first proposed at home and abroad. In order to establish a corresponding theoretical and manufacturing technology system, the team has conducted a lot of in-depth and detailed explorations around the basic and applied issues in this field. In 2013, he obtained a series of representative work: paper printed circuit and liquid metal 3D printing technology, "dream ink" technology, skin circuit direct drawing technology, implantable medical electron in vivo 3D printing, liquid metal electronic stylus As well as atomized printing methods that can fabricate circuits on any surface, these technologies are highly reverberated internationally due to their pioneering nature, and have successively been known scientific media or publications such as MIT Technology Review, Chemistry World, Nature Asia, IEEE Spectrum The National Geographic Daily News, CCTV, "China Science Journal", "People's Daily" and other comments, the corresponding technology has also been favored by many well-known international and domestic electronics manufacturers. In order to meet the increasing demand for metal inks in the future, the research team also originally proposed a liquid metal material genome research program to discover a series of new functional electronic inks to promote the development of this field. The successful development of the practical fully automated liquid metal printer has enabled a new electronic circuit manufacturing model. Corresponding technologies are easily popularized in homes, offices, schools, factories and even industrial design, art exploration, and cultural and creative applications. They are extremely universal and basic electronic manufacturing tools. Lock is one kind of very important & secure hardware product in the full range. We mainly sell our Door Locks to Europe, South America. Our locks include the following: Mortise Locks, Pad Locks, Knob Lock Set, Lever Lock Sets, ect. 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The Institute of Physics and Chemistry, Chinese Academy of Sciences developed the first fully automatic liquid metal personal electronic circuit