Assembly and Characterization of Nanodevice using Carbon Nanotubes and Nanowires
ABSTRACT We report the assembly and characterization of three types of Ag, SnO2, and Ga2O3 nanowires (NWs) and two types of carbon nanotubes (NTs) using dielectrophoresis. The NWs and NTs were individually assembled using an experimental approach based on the dielectrophoretic force equation. After depositing a Pt top electrode using a focused ion beam, we investigated the I-V curves of NW and NT devices.
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ABSTRACT: We report the assembly and characterization of individually suspended Ag, GaN, SnO2, and Ga2O3 nanowires (NWs) using dielectrophoresis. The four kinds of NWs were individually assembled using an experimental approach based on the dielectrophoretic force equation. To freely suspend the individual NWs, we controlled the thickness of the bottom electrode. After depositing a Pt top electrode using a focused ion beam, we investigated the I–V curves of NW devices according to the change in the bottom electrode metal as well as the free suspension height from the insulator. We found that their conductivity for four kinds of NWs was remarkably increased along with the increase in the suspension height, while the gate effect in GaN was reduced.Nanotechnology 06/2006; 17(14):3388. · 3.84 Impact Factor
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ABSTRACT: We present a mass productive and reproducible assembly technique of a single bundle of single-walled carbon nano-tubes (sb-SWNTs) using dielectrophoresis (DEP). Gold electrodes with 10 gaps made via microlithography were used to align the carbon nanotubes (CNTs). The magnitude and type of applied electric field were investigated to verify their effects on CNT assembly. The optimum assembling conditions in which sb-SWNTs could be positioned at a desired site were experimentally identified, and the characteristics of the assembled sb-SWNTs were evaluated from AFM, Raman spectroscopy, and I–V curve. This assembly method has potential for applications, such as gas sensors or electronic devices.05/2005; 82.