| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312701 |
| ISSN: | 1516-1439 |
| Authors: | Galvao, Douglas Soares1 Rodrigues, Varlei2 Ugarte, Daniel Legoas, Sergio Benites3 |
| Institutions: | 1Universidade Estadual de Campinas, Instituto de Fisica, Campinas, Sao Paulo. Brasil 2Laboratorio Nacional de Luz Sincrotron, Campinas, Sao Paulo. Brasil 3Universidade Federal do Amazonas, Departamento de Fisica, Manaus, Amazonas. Brasil |
| Year: | 2004 |
| Season: | Abr-Jun |
| Volumen: | 7 |
| Number: | 2 |
| Pages: | 339-342 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | Metallic nanowires have attracted much attention in the last years due to new phenomena such as quantum conductance and the existence of unexpected long interatomic distances attaining 0.3-0.5 nm. These large distances represented a challenge for physical interpretation. In this work we present experimental data from high-resolution transmission electron microscopy and results from ab initio calculations for suspended gold chains and show that these large distances can be easily explained by the presence of carbon atoms as contaminants. In principle the present conclusions can be also applied to other metallic nanowires (such as Ag and Pt) whose structures also present large interatomic distances |
| Disciplines: | Ingeniería, Física y astronomía |
| Keyword: | Ingeniería de materiales, Ingeniería mecánica, Física atómica y molecular, Nanoalambres, Contaminación, Carbono |
| Keyword: | Engineering, Physics and astronomy, Materials engineering, Mechanical engineering, Atomic and molecular physics, Nanowires, Contamination, Carbon |
| Full text: | Texto completo (Ver HTML) |
