An international collaborative research team including Kyoto University announced that they have succeeded in synthesizing and elucidating the structure of glass, which has the best structural order in the world.

 Glass has been used in our daily lives for a long time and has become one of the indispensable materials, but its structure loses the regularity of atomic arrangement because it is made by quenching the liquid of the raw material. ..The synthesis of glass with a high structural order is expected to become a new basis for material development, but structural research on glass with a disordered atomic arrangement has been difficult, and its structural control has been delayed.

 This time, the researchers synthesized silica (SiO8) glass under high temperature and high pressure of 1200 ° C and 7.7 atm from experiments using quantum beam facilities such as the large radiation facility SPring-2. We have discovered that the most spaced glass in the world has been reported so far, that is, the most structurally ordered glass in the world.State-of-the-art topological analysis has also revealed the mechanism by which the atomic ring structure of glass is deformed and formed by compression at high temperatures, thereby ordering the atomic arrangement.

 In addition, when the movement of glass atoms with the world's most structural order was measured, it was found that it was different from glass without structural order synthesized at room temperature with the same composition and density, and the movement of glass atoms was determined by the structural order. Was also found to be greatly affected.

 The findings obtained this time will pave the way for structural control of glass that makes full use of temperature and pressure, and are expected to be applied to the synthesis of new high-refractive index glass, high-strength glass, and high-performance optical fiber in the future. ..

 In addition to Kyoto University, this research team includes Materials and Materials Research Organization, Bath University, Waseda University, Tokyo Institute of Technology, Gifu University, Hiromae University, Tokyo University, Ryukyu University, Laue Langevin Institute, Tsukuba University, Oak Ridge. National Research Institute, Rutherford Appleton Research Institute, Physics and Chemistry Research Institute, Norwegian University of Science and Technology, Industrial Technology Research Institute, Ritsumeikan University, High Brightness Photoscience Research Center are listed, and the power of many researchers in Japan and abroad. The result was obtained by.

Paper information:[NPG Asia Materials] Structure and properties of densified silica glass: Characterizing the order within disorder

Tokyo University

Established in the 10th year of the Meiji era.A university with the longest history in Japan and at the forefront of Japanese knowledge

The University of Tokyo was established in 1877 (Meiji 10) by integrating the Tokyo Kaisei School and the Tokyo Medical School.Since its establishment, it has developed education and research in a unique way in the world as a leading university in Japan and an academic center for the fusion of East and West cultures.As a result, many human resources have been produced in a wide range of fields, and many research achievements […]

Kyoto University

Foster a free academic style based on the spirit of "self-respect for self-weight" and open up a world of creative learning.

With the motto of self-study, we will continue to maintain a free academic style that is not bound by common sense, and develop human resources who have both creativity and practical ability.We provide an inclusive learning space that allows for diverse and hierarchical choices so that students themselves can choose a solid future through valuable trial and error. […]

Tokyo Institute of Technology

The pinnacle of science and engineering university that continues to produce science and engineering people with high aspirations and a Japanese spirit, mastering the knowledge that creates the times, refining their skills

Tokyo Institute of Technology was established as the Tokyo Institute of Technology in 1881 (Meiji 14), when modernization of industry was an urgent need.Since its establishment, it has continued to produce excellent research results with excellent science and engineering human resources, and is still at the top of Japan's science and engineering universities.Tokyo Institute of Technology requires not only a high degree of specialization but also liberal arts […]

University of Tsukuba

Continue to challenge interdisciplinary fusion and internationalization, and develop human resources with intelligence and humanity

University of Tsukuba is the core of Tsukuba Science City, an international city with a high academic and cultural scent.The current education system is 9 groups, 23 classes, and it is possible to take specialized introductory courses from all fields, aiming to have creative intelligence and rich humanity.Solving global issues with soul genius […]

Gifu University

Developing internationalization rooted in the region.National universities that learn, study, and contribute

Gifu University, which is a constituent university of the Tokai National Higher Education Organization, puts human resources development as a top priority in the culture of "a place where people grow up", provides abundant education in both quality and quantity, and has abundant education and reliable specialization. Human resources with independence and internationality in addition to the knowledge and skills, broad perspective and comprehensive judgment, and excellent communication ability […]

Hirosaki University

Fostering "ability to see, solve, and continue learning" that develops "scholastic ability, action ability, and motivation"

Hirosaki University is a national university founded in 24.It consists of Faculty of Humanities and Social Sciences, Faculty of Education, Faculty of Medicine, Faculty of Health Sciences, Faculty of Medicine, Department of Psychological Support Science, Faculty of Science and Technology, and Faculty of Agriculture and Life Sciences.Fostering students' intellect, humanity and sociality through independent and active intellectual inquiry of students […]

Waseda University

Reform with the aim of "WASEDA shining in the world" with research, education, and contribution as the three pillars

Waseda University has created an unparalleled environment in which all students can hone their ability to take on unanswered issues based on the three founding principles of "independence of academics, utilization of academics, and creation of model people."Aiming to be a world-class university with unwavering international competitiveness, "WASEDA that shines in the world," "Waseda for research" and "[…] for education.

Ritsumeikan University
University of the Ryukyus

Acquire specialized knowledge and skills through a variety of learning. Established 7 faculties, 9 departments, and 7 centers

It is the only national university in Okinawa prefecture and is the southernmost and westernmost university in Japan.We will ensure the quality of education and develop human resources who can play an active role and contribute to the world by utilizing advanced expertise and problem-seeking ability based on a wide range of education.Fostering wisdom and setting an example for society by fully drawing out diverse personalities and talents and opening up a new era […]

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