Simultaneous growth of well-aligned diamond and graphitic carbon nanostructures through graphite etching |
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| Affiliation: | 1. Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK, Canada S7N 5A9;2. Plasma Physics Laboratory, University of Saskatchewan, 116 Science Place Saskatoon, SK, Canada S7N 5E2;3. Department of Chemistry, University of Saskatchewan, 110 Science Place Saskatoon, SK, Canada S7N 5C9;1. School of Material Science and Engineering, Jiangsu Key Laboratory of Material Surface Technology, Jiangsu Collaborative Innovation Centre for Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, China;2. Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK S7H 5A9, Canada;3. College of Material Science and Engineering, Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China;4. Shenyang National Lab of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;5. Departamento de Ingeniería Química Industrial, ESIQIE, Instituto Politécnico Nacional, Zacatenco, México D.F., 07738, Mexico;6. Canadian Light Source, University of Saskatchewan, Saskatoon, SK S7N 0X4, Canada;1. Department of Mechanical Engineering, Nanjing Tech University, Nanjing, Jiangsu Province 210009, China;2. Department of Mechanical Engineering, Wuhan Institute of Technology, Wuhan, Hubei Province 430070, China;1. Shenyang National Lab of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;2. Plasma Physics Laboratory, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada;3. Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada;1. NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark;2. Institute of Materials Science, Kaunas University of Technology, K. Bar?ausko St. 59, 51423 Kaunas, Lithuania;1. Istituto di Fotonica e Nanotecnologie – CNR, 00156 Rome, Italy;2. INFN – Laboratori Nazionali di Frascati, Via E. Fermi 40, 00044 Frascati (RM), Italy;3. RICMASS, Rome International Center for Materials Science Superstripes, 00185 Rome, Italy;4. Dipartimento di Scienze Geologiche, Università Roma TRE, 00146 Rome, Italy;5. Università di Firenze, Dipartimento Fisica e Astronomia, Largo E. Fermi 2, 50125 Firenze, Italy |
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| Abstract: | A hot filament chemical vapor deposition process based on hydrogen etching of graphite has been developed to synthesize diamond and graphitic carbon nanostructures. Well-aligned diamond and graphitic carbon nanostructured thin films have been synthesized simultaneously on differently pretreated silicon substrates in a pure hydrogen plasma. Graphitic nanocones, diamond nanocones and carbon nanotubes were selectively grown on uncoated, diamond and nickel pre-coated silicon substrates, respectively, in a single deposition process. The nanocones are solid cones with submicron scale roots and nanometer-size sharp tips. The nanotubes are hollow tubes with outer diameter of approximately 50 nm. The orientation of the well-aligned carbon nanostructures depends on the direction of the electric field at the samples surface. Nucleation and growth of diamond on the nanocones were further investigated under similar conditions without plasma. Diamond nanocomposite films have been obtained by depositing a nanocrystalline diamond film on the layer of diamond nanocones. |
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