2009/10/30 by Hye Jin Park, Jannik C. Meyer, Jannik Meyer +3 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Advancements in Battery Materials #Carbon Nanotubes in Composites #Graphene research and applications #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.carbon.2009.11.030
published as Carbon vol. 48, pp. 1088-1094 (2010)
arxiv created 2009/10/30 · openalex publication_date 2009/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
The structure, and electrical, mechanical and optical properties of few-layer graphene (FLG) synthesized by chemical vapor deposition (CVD) on a Ni coated substrate were studied. Atomic resolution transmission electron microscope (TEM) images show highly crystalline single layer parts of the sample changing to multilayer domains where crystal boundaries are connected by chemical bonds. This suggests two different growth mechanisms. CVD and carbon segregation participate in the growth process and are responsible for the different structural formations found. Measurements of the electrical and mechanical properties on the centimeter scale provide evidence of a large scale structural continuity: 1) in the temperature dependence of the electrical conductivity, a non-zero value near 0 K indicates the metallic character of electronic transport; 2) the Young's modulus of a pristine polycarbonate film (1.37 GPa) improves significantly when covered with FLG (1.85 GPa). The latter indicates an extraordinary Young modulus value of the FLG-coating of TPa orders of magnitude. Raman and optical spectroscopy support the previous conclusions. The sample can be used as a flexible and transparent electrode and is suitable for special membranes to detect and study individual molecules in high resolution TEM.