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A comparison of different carbon filaments on the nanometer and atomic scales by scanning tunneling microscopy |
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| Authors: | A Méndez S Villar-Rodil A Martínez-Alonso JL Figueiredo |
| Affiliation: | a Laboratório de Catálise e Materiais, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal b Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal c Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain |
| Abstract: | Scanning tunneling microscopy (STM) has been employed as a tool to elucidate the structural differences between carbon nanotubes (CNTs) and carbon nanofibers (CNFs) at the nanometer and atomic scales. As opposed to the seamless, virtually defect-free structure of CNTs that was visualized by STM at both scales, CNFs displayed a fragmented graphitic conformation (nanographites), where the nanographitic domains were below 2-3 nm in lateral size. Thus, STM is proposed as a suitable technique to discriminate these two types of carbon nanostructures. |
| Keywords: | Scanning tunneling microscopy Nanomaterials Chemical vapor deposition Microstructure |
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