| 초록 |
Periodic self-assembled nanopatterns are ultimately required to be assembled into monolayer-level thickness for functional active layers in thin film devices. In the past years, closely-packed monolayers of spherical NCs have shown a significant progress in fields, however, it is still challenging to achieve monolayer of anisotropic NCs with control of its collective ordering. In particular, uniaxial orientation of nanorods (NRs) ensemble is expected to significantly enhance linear polarization and electrical transport efficiency. Despite the intense desire, conventional interaction of NRs cannot give a powerful driving force for the ordering at monolayer-level. Strong attraction between NRs makes them assembled into multi-layer thickness whereas weak force makes their movement sensitive to environmental fluctuation and their ordering is readily collapsed. To overcome the barrier, another interactive forces, capillary force and depletion force, are newly introduced for this study and the condition for highly-ordered monolayer is quantified by calculating mojor forces. The strategy for long-range self-assembled monolayer is generally applicable to another anisotropic nanomaterials. |
