Quasi-Monocrystalline Graphene Crystallization on Liquid Copper Matrix
| Autor: | Piotr Kula, Konrad Dybowski, Dominika Kuten, Radomir Atraszkiewicz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Liquid metal
crystal structure Materials science 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Technology Article law.invention Nanomaterials graphene growth Monocrystalline silicon Impurity law General Materials Science Crystallization Composite material lcsh:Microscopy nanomaterials lcsh:QC120-168.85 lcsh:QH201-278.5 Graphene lcsh:T low-angle boundaries 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:TA1-2040 Grain boundary lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) Layer (electronics) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 2606, p 2606 (2020) Materials Volume 13 Issue 11 |
| ISSN: | 1996-1944 |
| Popis: | To access the properties of theoretical graphene, it is crucial to manufacture layers with a defect-free structure. The imperfections of the structure are the cause of deterioration in both electrical and mechanical properties. Among the most commonly occurring crystalline defects, there are grain boundaries and overlapping zones. Hence, perfect graphene shall be monocrystalline, which is difficult and expensive to obtain. An alternative to monocrystalline structure is a quasi-monocrystalline graphene with low angle-type boundaries without the local overlapping of neighboring flakes. The purpose of this work was to identify factors that directly affect the structure of graphene grown on a surface of a liquid metal. In the article the growth of graphene on a liquid copper is presented. Nucleating graphene flakes are able to move with three degrees of freedom creating low-angle type boundaries when they attach to one another. The structure of graphene grown with the use of this method is almost free of overlapping zones. In addition, the article presents the influence of impurities on the amount of crystallization nuclei formed, and thus the possibility to order the structure, creating a quasi-monocrystalline layer. |
| Databáze: | OpenAIRE |
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