Development of multi-layer for Au nanorod assembly

In this study, dielectrophoresis (DEP) principle was used to assemble Au nanorods which were synthesized by electrochemical deposition (ECD) method. The nanorod assembly electrode was designed by considering the simulation and fabricated using semiconductor fabrications. In experiment, only 1st layer and multilayer were experienced to compare the Au nanorod assembly efficiency. First, assembly efficiency was about 20 % when 20 kHz, 20 Vp-p (AC) was applied on the only 1st layer. Second, multi-layer was designed for getting high assembly efficiency. Assembly efficiency was improved by 45 % when 10 V (DC) was applied on the 1st layer electrode and 20 kHz, 20 Vp-p (AC) was applied on the 2nd layer electrode. As a result, the Au nanorod assembly efficiency of the multi-layer was increased about 25 % than assembly efficiency of the only 1st layer.