| 초록 |
A highly conductive and durable copper (Cu) paste was successfully fabricated via phosphoric acid treatment and mechanical blending with poly(vinylimidazole-co-vinyltrimethoxysilane) poly(VI-co-VTS) and poly(4-styrenesulfonate) (PSS). The incorporation of PSS, which acted as compatibilizer and binder, allowed for enhanced dispersibility between Cu flakes and good adhesion to a flexible substrate without further curing process. The patterned Cu-based thin film functioned as the electrode in a dipole tag-antenna due to its high electrical conductivity (105 mΩsq−1 of surface resistance) with long term and thermal stability, and structural flexibility. The Cu-based dipole tag antenna was implemented at a center frequency of 913.5 MHz, and boasted a high transmitted power efficiency of 99.2% with a 3.3 m recognition distance. These characteristics indicate that such a Cu-based electrode would be suitable for use as a commercial signal-receiving apparatus that could detect nearby objects. |
