Discovery of carbon-based strongest and hardest amorphous material

查看全文 作　　者：Shuangshuang [1]Zhang;Zihe [1]Li;Kun [1,2]Luo;Julong [1]He;Yufei [1,2]Gao;Alexander [1,3,4,5]V.Soldatov;Vicente [3,6]Benavides;Kaiyuan [7]Shi;Anmin [1]Nie;Bin [1]Zhang;Wentao [1]Hu;Mengdong [1]Ma;Yong [2]Liu;Bin [1]Wen;Guoying [1]Gao;Bing [1]Liu;Yang [1,2]Zhang;Yu [1]Shu;Dongli [1]Yu;Xiang-Feng [1]Zhou;Zhisheng [1]Zhao;Bo [1]Xu;Lei [7]Su;Guoqiang [7]Yang;Olga [8]P.Chernogorova;Yongjun [1]Tian

机构地区：[1]Center for High Pressure Science(CHiPS),State Key Laboratory of Metastable Materials Science and Technology.Yanslian University,Qinhuangdao 066004,China;[2]Key Laboratory for Microstructural Material Physics of Hebei Province,School of Science,Yanshan University,Qinhuangdao 066004,China;[3]Department of Engineenng Sciences and Mathematics,Lulea University of Technology,Lulea SE-97187,Sweden;[4]Department of Physics,Harvard University,Cambridge,MA 02138,USA;[5]Center for High Pressure Science and Technology Advanced Research,Shanghai 201203,China;[6]Department of Materials Science,Saarland University,Saarbrucken D-66123,Germany;[7]Key Laboratory of Photochemistry,Institute of Chemistry,University of Chinese Academy of Sciences,Beijing 100190,China;[8]Baikov Institute of Metallurgy and Materials Science,Russian Academy of Sciences,Moscow 119334,Russia

出　　处：《National Science Review》索引2022年第9卷第1期,共11页

基　　金：This work was supported by the National Natural Science Foundation of China(52090020,51722209,51672238,91963203,52025026,51525205 and U20A20238);the National Key R&D Program of China(2018YFA0703400);the Natural Science Foundation for Distinguished Young Scholars of Hebei Province of China(E2018203349);the Talent Research Project in Hebei Province(2020HBQZYC003);European Union Funding via Erasmus+/DOCMASE Doctoral school(‘2011–0020’)。 摘　　要：Carbon is one of the most fascinating elements due to its structurally diverse allo tropic forms stemming from its bonding varieties(sp,sp^(2)and sp^(3)).Exploring new forms of carbon has been the eternal theme of scientific research.Herein,we report on amorphous(AM) carbon materials with a high fraction of sp^(3)bonding recovered from compression of fullerene C_(60) under high pressure and high temperature,previously unexplored.Analysis of photoluminescence and absorption spectra demonstrates that they are semiconducting with a bandgap range of 1.5-2.2 eV,comparable to that of widely used AM silicon.Comprehensive mechanical tests demonstrate that synthesized AM-Ⅲ carbon is the hardest and strongest AM material known to date,and can scratch diamond crystal and approach its strength.The produced AM carbon materials combine outstanding mechanical and electronic properties,and may potentially be used in photovoltaic applications that require ultrahigh strength and wear resistance. 关键词：amorphous carbon ultrahard ultrastrong SEMICONDUCTOR phase transition

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Discovery of carbon-based strongest and hardest amorphous material

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