The completion of the proposed research will contribute to a better understanding of novel kinetic pathways and growth modes of metal adatoms deposited on metal and semiconductor surfaces driven by surface diffusion, especially at low temperatures. This is one of the important challenges in nanotechnology i.e. to discover ways where nanostructures of controllable geometry and dimensions can be easily fabricated. So far the Pb/Si system has been the prototype where all the results obtained have been reproduced by several groups with different techniques. The knowledge gained has identified that energetics are equally important as kinetics. We plan to search for other metal systems where they have more relevance to reactivity and where similar height control is possible. We will study height and geometry dependent variations of reactivity during oxygen and hydrogen adsoption on the nano-islands as a result of QSE starting first with Pb islands. (en)
Stanovení podmínek definovaného homogenního růstu nanostruktur a podmínek samo-organizace kovových struktur na površích kovů a polovodičů. Definice vztahu geometrie nanostruktur a chemicke reaktivity.
V tomto projektu jsme studovali vliv interakce a difúze na nukleaci a následný růst ostrůvků na površích. Dále jsme studovali roli laterálních a vertikálních sil při manipulaci jednotlivých atomů na povrch polovodičů. Také jsme implementovali novou metodu pro výpočet neadiabatických vazeb elektronů do programového balíku Fireball. (cs)
In this project we studied an influence of interaction and diffusion on nucleation and following growth of islands on surfaces. We also studied a role of lateral and vertical forces during single atom manipulation on semiconductor surfaces. In addition, we implemented a new method for calculation of nonadiabatic couplings of electrons in code Fireball. Achievements of the project were published (en)