| 초록 |
Here, we demonstrate the directed self-assembly (DSA) of gold nanoparticles (AuNPs) on the nano-stripe patterns of poly(tetrafluoroethylene) (PTFE). The soft nanostripes are fabricated by physically rubbing a PTFE bar on Si substrate at high temperatures above its melting point. Then the bare surface exposed between nano-stripe patterns is chemically modified with 3-Aminopropyltriethoxysilane(APTES). Once the AuNPs are dip-coated, they are spatially placed between the soft patterns. This behavior is due to the synergetic effect of height contrast of soft PTFE patterns and surface energy difference imparted by APTES and PTFE. Finally, by applying RIE process, only uniform arrays of the NPs are remained on the substrate, but all organic components are removed. The DSA of NPs is characterized by using AFM and SEM. |
