Superhard material is a typical high-pressure phase material, which plays a key role in the industrial chain of many industries in the country and determines the industrial level of the country. It is called "strategic materials" by developed countries. High pressure science is the scientific basis and important frontier of the development of superhard materials. The appearance of high-pressure phase with different structure and properties from normal matter under high pressure is the source of exploring new materials. High pressure research is an important way to obtain key data of modern national defense. The laboratory will focus on superhard multifunctional materials, new materials that are difficult to prepare under normal pressure and high pressure science. Main direction: (1) synthesis of superhard and new functional materials at high temperature and pressure. Study the physical problems and key technologies of synthesizing superhard materials at high temperature and high pressure, improve the quality of superhard materials, explore the preparation of new functional materials at high temperature and high pressure and new materials that are difficult to prepare under normal pressure, and promote the industrialization of research results. (2) Superhard multifunctional film materials. The key preparation technology and basic physical problems of superhard multifunctional thin film materials are studied. Develop and popularize the application of superhard thin film materials in finishing tools; Study the structure and preparation technology of prototype devices, and explore the application of new materials in high-tech fields such as high-power photoelectric devices, radiation-resistant and high-temperature-resistant semiconductors. (3) The influence of high pressure on the structure and properties of materials and the high pressure phase transition. The development of Raman spectroscopy, X-ray diffraction, infrared spectroscopy, Brillouin scattering, electrical measurement and other high-pressure in-situ micro-area measurement technologies, the establishment of a theoretical system under high pressure, and the exploration of the structure, properties and phase transformation laws of high-pressure lower body materials and nano-materials provide experimental and theoretical basis for the preparation of superhard and multifunctional high-pressure phase materials. Carry out research on high-pressure technology in other disciplines. Since the establishment of the laboratory, remarkable progress has been made in scientific research: 1, synthesis of superhard and new functional materials at high temperature and high pressure. Independent research and development of more than 20 kinds of high-grade diamond single crystal and special high-grade industrial diamond synthesis technology, as well as a series of basic application research to promote the growth and lead the development of the industry. 2. Superhard multifunctional film materials. The preparation technology and process of large size and high quality diamond thick film were improved. A diamond thin film heat sink with high thermal conductivity for high power semiconductor laser was prepared. Realize the application of diamond thick film in the field of precision machining. Firstly, the superconducting characteristics of boron-doped diamond thick film were discovered, and the superconducting transition temperature and zero resistance temperature were determined. Breakthroughs have been made in the performance calibration, energy level model and carrier transport characteristics of diamond-based broadband heterojunction. The growth, structure and field emission characteristics of high hardness carbon nitride (CNx) thin films are systematically presented. The vapor phase epitaxial growth of diamond single crystal was realized, and large-size diamond single crystal was prepared. 3. The influence of high pressure on the structure and properties of materials and high pressure phase transition. It is found that metallic sodium is transformed into a "transparent" wide band gap insulator at 2 million atmospheres. A new crystal phase of iodine molecule was found. It is explained that two new vibration modes have been observed in the high-pressure in-situ Raman spectra of iodine and bromine. There are two intramolecular valence bonds with different bond lengths in the same system, which is of great guiding significance for understanding molecular dissociation and the study of metallic hydrogen. On the experimental platform of in-situ material structure analysis and performance test under ultra-high pressure and high-pressure theoretical calculation platform, it is found that pressure can effectively improve the thermoelectric efficiency of thermoelectric materials and other new high-pressure effects. New phase transitions such as liquid-liquid first-order phase transition and pressure-induced structural metallization phase transition were observed at high temperature and high pressure. Reveal the physical mechanism of pressure-induced phase transition that was difficult to determine in many substances in the past; Pressure-induced valence bond polymerization of C60 nanorods and carbon nanotubes was realized for the first time, and a new quasi-one-dimensional nanomaterial with excellent properties was obtained, which was difficult to obtain by atmospheric pressure method. These important research progress and achievements have published a number of high-quality papers in journals such as Nature, PNAS, Physical Review Express, etc., and won provincial and ministerial-level scientific and technological awards for many years, and obtained many invention patents, which improved the scientific research ability of the laboratory.
The laboratory promotes open communication through open topics, international cooperation, visiting scholars and holding international conferences. Many scientific research institutes, such as the Institute of Physics of Chinese Academy of Sciences, have undertaken the task of opening laboratories, maintained long-term good cooperative relations with internationally renowned research institutions such as Washington-Carnegie Institute in the United States, and hosted international conferences such as the International Academic Invitation Conference on High Pressure Materials. Every year, senior visiting scholars from the United States, Sweden, Germany and South Korea come to the laboratory to attend meetings or give lectures at the frontier forum of materials science organized by the laboratory. With the strong support of Jilin University, the long-term goal of the laboratory is to reach the international advanced level in the main research direction and the international leading level in several research fields. Make important original work in the academic field, promote the development of the discipline, and build the laboratory into a research center of superhard multifunctional materials and high-pressure science with important influence in the world. Promote the industrialization of scientific research achievements and make contributions to improving the scientific and technological level of China's superhard materials industry, enhancing international competitiveness and realizing sustainable development.
Superhard material is a typical high-pressure phase material, which plays a key role in the industrial chain of many industries in the country and determines the industrial level of the country. It is called "strategic materials" by developed countries. High pressure science is the scientific basis and important frontier of the development of superhard materials. The appearance of high-pressure phase with different structure and properties from normal matter under high pressure is the source of exploring new materials. High pressure research is an important way to obtain key data of modern national defense. The laboratory will focus on superhard multifunctional materials, new materials that are difficult to prepare under normal pressure and high pressure science. Main direction: (1) synthesis of superhard and new functional materials at high temperature and pressure. Study the physical problems and key technologies of synthesizing superhard materials at high temperature and high pressure, improve the quality of superhard materials, explore the preparation of new functional materials at high temperature and high pressure and new materials that are difficult to prepare under normal pressure, and promote the industrialization of research results. (2) Superhard multifunctional film materials. The key preparation technology and basic physical problems of superhard multifunctional thin film materials are studied. Develop and popularize the application of superhard thin film materials in finishing tools; Study the structure and preparation technology of prototype devices, and explore the application of new materials in high-tech fields such as high-power photoelectric devices, radiation-resistant and high-temperature-resistant semiconductors. (3) The influence of high pressure on the structure and properties of materials and the high pressure phase transition. The development of Raman spectroscopy, X-ray diffraction, infrared spectroscopy, Brillouin scattering, electrical measurement and other high-pressure in-situ micro-area measurement technologies, the establishment of a theoretical system under high pressure, and the exploration of the structure, properties and phase transformation laws of high-pressure lower body materials and nano-materials provide experimental and theoretical basis for the preparation of superhard and multifunctional high-pressure phase materials. Carry out research on high-pressure technology in other disciplines. Since the establishment of the laboratory, remarkable progress has been made in scientific research: 1, synthesis of superhard and new functional materials at high temperature and high pressure. Independent research and development of more than 20 kinds of high-grade diamond single crystal and special high-grade industrial diamond synthesis technology, as well as a series of basic application research to promote the growth and lead the development of the industry. 2. Superhard multifunctional film materials. The preparation technology and process of large size and high quality diamond thick film were improved. A diamond thin film heat sink with high thermal conductivity for high power semiconductor laser was prepared. Realize the application of diamond thick film in the field of precision machining. Firstly, the superconducting characteristics of boron-doped diamond thick film were discovered, and the superconducting transition temperature and zero resistance temperature were determined. Breakthroughs have been made in the performance calibration, energy level model and carrier transport characteristics of diamond-based broadband heterojunction. The growth, structure and field emission characteristics of high hardness carbon nitride (CNx) thin films are systematically presented. The vapor phase epitaxial growth of diamond single crystal was realized, and large-size diamond single crystal was prepared. 3. The influence of high pressure on the structure and properties of materials and high pressure phase transition. It is found that metallic sodium is transformed into a "transparent" wide band gap insulator at 2 million atmospheres. A new crystal phase of iodine molecule was found. It is explained that two new vibration modes have been observed in the high-pressure in-situ Raman spectra of iodine and bromine. There are two intramolecular valence bonds with different bond lengths in the same system, which is of great guiding significance for understanding molecular dissociation and the study of metallic hydrogen. On the experimental platform of in-situ material structure analysis and performance test under ultra-high pressure and high-pressure theoretical calculation platform, it is found that pressure can effectively improve the thermoelectric efficiency of thermoelectric materials and other new high-pressure effects. New phase transitions such as liquid-liquid first-order phase transition and pressure-induced structural metallization phase transition were observed at high temperature and high pressure. Reveal the physical mechanism of pressure-induced phase transition that was difficult to determine in many substances in the past; Pressure-induced valence bond polymerization of C60 nanorods and carbon nanotubes was realized for the first time, and a new quasi-one-dimensional nanomaterial with excellent properties was obtained, which was difficult to obtain by atmospheric pressure method. These important research progress and achievements have published a number of high-quality papers in journals such as Nature, PNAS, Physical Review Express, etc., and won provincial and ministerial-level scientific and technological awards for many years, and obtained many invention patents, which improved the scientific research ability of the laboratory.
The laboratory promotes open communication through open topics, international cooperation, visiting scholars and holding international conferences. Many scientific research institutes, such as the Institute of Physics of Chinese Academy of Sciences, have undertaken the task of opening laboratories, maintained long-term good cooperative relations with internationally renowned research institutions such as Washington-Carnegie Institute in the United States, and hosted international conferences such as the International Academic Invitation Conference on High Pressure Materials. Every year, senior visiting scholars from the United States, Sweden, Germany and South Korea come to the laboratory to attend meetings or give lectures at the frontier forum of materials science organized by the laboratory. With the strong support of Jilin University, the long-term goal of the laboratory is to reach the international advanced level in the main research direction and the international leading level in several research fields. Make important original work in the academic field, promote the development of the discipline, and build the laboratory into a research center of superhard multifunctional materials and high-pressure science with important influence in the world. Promote the industrialization of scientific research achievements and make contributions to improving the scientific and technological level of China's superhard materials industry, enhancing international competitiveness and realizing sustainable development.