Creator | Title | Description | Subject | Date | ||
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1 |
![]() | Liu, Feng | Local strain-mediated chemical potential control of quantum dot self-organization in heteroepitaxy | From observations of self-assembly of Ge quantum dots directed by substrate morphology, we propose the concept of control of ordering in heteroepitaxy by a local strain-mediated surface chemical potential. Using quite simple lithography, we demonstrate directed quantum dot ordering. The strain part ... | Self-organization; Heteroepitaxy; Chemical potential control; Ge quantum dots | 2004-01 |
2 |
![]() | Liu, Feng | Self-organization of semiconductor nanocrystals by selective surface faceting | The formation and ordering of Si nanocrystals in dewetting and agglomeration of the thin single crystalline Si layer in silicon-on-insulator has been investigated using low-energy electron microscopy. The evolution of the Si dewetting and agglomeration is captured in real time, revealing the detai... | Self-organization; Surface faceting; Silicon nanocrystals; Dewetting | 2005-12 |
3 |
![]() | Liu, Feng | Self-organization of steps in growth of strained films on vicinal substrates | Computer simulations show that if stress is present, steps on a vicinal surface can self-organize into a regular array of step bunches. Such self-organization can provide templates for subsequent fabrication of "quantum wire" nanostructures. The size and spacing of the bunches can be controlled inde... | Self-organization; Strained films; Growth; Vicinal substrates; Step bunches | 1998-02 |