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  • Open Access


    Hydrogenated Amorphous Carbon Films from Palmyra Sugar

    Budhi Priyanto1,2,*, Retno Asih1, Irma Septi Ardiani1, Anna Zakiyatul Laila1, Khoirotun Nadiyyah1, Bima Romadhon3, Sarayut Tunmee4, Hideki Nakajima4, Triwikantoro1, Yoyok Cahyono1, Darminto1,*

    Journal of Renewable Materials, Vol.9, No.6, pp. 1087-1098, 2021, DOI:10.32604/jrm.2021.014466

    Abstract A simple, highly reproducible, and environmentally friendly method is a considered approach in generating renewable energy materials. Here, hydrogenated amorphous carbon (a-C) films have been successfully prepared from palmyra liquid sugar, employing spin-coating and spraying methods. Compared with the former method, the latter shows a significance in producing a better homogeneity in particle size and film thickness. The obtained films have a thickness of approximately 1000 to 100 nm and contain an sp2 hexagonal structure (~70%) and sp3 tetrahedral configuration (~30%) of carbons. The introduction of boron (B) and nitrogen (N) as dopants has created the local structural modification of… More > Graphic Abstract

    Hydrogenated Amorphous Carbon Films from Palmyra Sugar

  • Open Access


    Toughening Mechanisms in Carbon Nanotube-Reinforced Amorphous Carbon Matrix Composites

    J.B. Niu1, L.L. Li2, Q. Xu1, Z.H. Xia1,3

    CMC-Computers, Materials & Continua, Vol.38, No.1, pp. 31-41, 2013, DOI:10.3970/cmc.2013.038.031

    Abstract Crack deflection and penetration at the interface of multi-wall carbon nanotube/amorphous carbon composites were studied via molecular dynamics simulations. In-situ strength of double-wall nanotubes bridging a matrix crack was calculated under various interfacial conditions. The structure of the nanotube reinforcement -ideal multi-wall vs. multi-wall with interwall sp3 bonding - influences the interfacial sliding and crack penetration. When the nanotube/matrix interface is strong, matrix crack penetrates the outermost layer of nanotubes but it deflects within the nanotubes with certain sp3 interwall bond density, resulting in inner wall pullout. With increasing the sp3 interwall bond density, the fracture mode becomes brittle; the… More >

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