| タイトル | Universal aspects of brittle fracture, adhesion, and atomic force microscopy |
| 著者（英） | Ferrante, John; Banerjea, Amitava; Smith, John R. |
| 著者所属（英） | General Motors Research Labs.|NASA Lewis Research Center |
| 発行日 | 1989-01-01 |
| 言語 | eng |
| 内容記述 | This universal relation between binding energy and interatomic separation was originally discovered for adhesion at bimetallic interfaces involving the simple metals Al, Zn, Mg, and Na. It is shown here that the same universal relation extends to adhesion at transition-metal interfaces. Adhesive energies have been computed for the low-index interfaces of Al, Ni, Cu, Ag, Fe, and W, using the equivalent-crystal theory (ECT) and keeping the atoms in each semiinfinite slab fixed rigidly in their equilibrium positions. These adhesive energy curves can be scaled onto each other and onto the universal adhesion curve. The effect of tip shape on the adhesive forces in the atomic-force microscope (AFM) is studied by computing energies and forces using the ECT. While the details of the energy-distance and force-distance curves are sensitive to tip shape, all of these curves can be scaled onto the universal adhesion curve. |
| NASA分類 | CHEMISTRY AND MATERIALS (GENERAL) |
| レポートNO | 90A14021 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/359840 |
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