抄録
Single-walled carbon nanotube (SWCNT) is expected to be applied to a mechanical element of micro devices, because it has excellent mechanical, electrical and thermal properties. In such applications, it is essential to evaluate mechanical properties, which dominate the sensitivity and resonant frequency. Because each SWCNT has different properties from one another, a plenty of tensile testing experiments for individual SWCNT are required. However, it is very difficult to assemble an isolated SWCNT onto a test device because SWCNT is very small and tends to bundle with each other. We proposed an assembly method which utilizes biotin modified single strand DNA (ssDNA). This method can prevent SWCNT from bundling, because ssDNA keep SWCNT's isolation. Also, the binding of biotin and streptavidin is applied to SWCNT assembly. In this research, we dispersed SWCNT by using biotin modified ssDNA and confirmed the mono-dispersion of SWCNT. We assembled SWCNT specifically onto gold gap electrodes, and confirmed bridged SWCNT by FE-SEM observation.
