| Autor: |
L, Hultman, S, Stafström, Z, Czigány, J, Neidhardt, N, Hellgren, I F, Brunell, K, Suenaga, C, Colliex |
| Rok vydání: |
2001 |
| Zdroj: |
Physical review letters. 87(22) |
| ISSN: |
0031-9007 |
| Popis: |
We report a new fullerenelike material consisting of cross-linked nano-onions of C and N. Growth of the onion shells takes place atom by atom on a substrate surface and yields thin solid films during magnetron sputter deposition. Electron microscopy and energy loss spectroscopy show that the core shell contains up to 20 at. % N corresponding to C(48)N(12) aza-fullerene composition. Nanoindentation of this nanostructured material gives high resilience with hardness 7 GPa, Young's modulus 37 GPa, and complete elastic recovery after loading with 0.5 mN to a depth of 75 nm. Total energy calculations show the stability of C(60-2n)N(2n) aza-fullerenes and suggest the existence of a novel C(48)N(12) molecule. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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