China University of Science and Technology has developed a "carbon spring" that can function in extreme environments from 100 ℃ to 350 ℃
2022-05-17 14:14:23
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News from the University of Science and Technology of China on the 20th: The team of Academician Yu Shuhong of the school has successfully developed a superelastic all-carbon porous material with both high compressibility and stretchability - "carbon spring", which can be heated at -100 ° C to 350 ° C. It works stably in extreme temperature environments of ℃. It is reported that this unique advantage makes it possible to apply it to outer space exploration missions.
The research results were recently published in Advanced Materials, a well-known journal in the field of materials.
Porous carbon materials have always been a research hotspot in the field of materials science due to their wide range of applications. Mechanical flexibility is a key factor determining the structural stability and durability during its practical application. After extensive research in the past decades, how to develop porous carbon materials with reversible stretchability remains a big challenge.
Inspired by the macroscopic elastic arch structure of the human "arch", the team of researchers successfully constructed an all-carbon porous material. Then the researchers took inspiration from the elastic deformation mechanism of the "bow" and successfully developed this "carbon spring", which can achieve reversible stretching and compression within a large strain range of -60% to 80% Deformed and fully resilient, similar to a real metal spring.
In view of the unique deformation mechanism and mechanical properties of the "carbon spring", as well as its good electrical conductivity, the researchers used it as a key component to successfully develop a strain sensing device that can detect tiny vibrations, and then fabricated a new type of magnetic sensor. pieces.
The research results show that the magnetic sensor can sensitively detect tiny magnetic fields as small as 0.4 mT, and can stably function in extreme temperature environments ranging from -100°C to 350°C. This unique advantage makes it applicable to outer space exploration. mission possible.