| Автор | D Fuhrmann |
| Автор | Ch Wöll |
| Дата выпуска | 1998-12-17 |
| dc.description | The nature of the mechanism governing the damping of molecular motion relative to a solid substrate has been investigated by a systematic study of molecular frustrated translations. Using scattering of thermal energy He-atoms, these vibrations located in the far-infrared regime (<15 meV) have been determined for prototype lubricant molecules, octane and other saturated hydrocarbons, adsorbed on a variety of different substrates, namely hydrogen-terminated diamond C(111), Pb(111), clean and hydrogen passivated Ru(0001) as well as on Cu(111). In most cases the lifetime of the frustrated translational modes is in good agreement with that computed from theoretical models considering only phononic damping. Exceptions to this rule (Pb(111) and Ru(0001)) are discussed. The results suggest that generally electronic contributions to sliding friction are weak; only in cases with significant electronic coupling between molecule and substrate does electronic friction dominate phononic friction. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The microscopic origins of sliding friction: a spectroscopic approach |
| Тип | paper |
| DOI | 10.1088/1367-2630/1/1/001 |
| Electronic ISSN | 1367-2630 |
| Журнал | New Journal of Physics |
| Том | 1 |
| Первая страница | 1 |
| Последняя страница | 1 |
| Аффилиация | D Fuhrmann; Physikalische Chemie I, Ruhr Universität Bochum, 44780 Bochum, Germany; Max-Planck-Institut für Strömungsforschung, Bunsenstr. 10, 37073 Göttingen, Germany |
| Аффилиация | Ch Wöll; Physikalische Chemie I, Ruhr Universität Bochum, 44780 Bochum, Germany; Max-Planck-Institut für Strömungsforschung, Bunsenstr. 10, 37073 Göttingen, Germany |
| Выпуск | 1 |
