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We report the positive effect of an Al underlayer for enhancing the growth of carbon nanotubes (CNTs) on Si substrates. The catalyst used for the growth was a sputter-deposited Fe–Si thin film and the growth temperature was 370°C. The morphology, composition, microstructure, and crystalline structure of the Fe–Si films with and without an Al underlayer having different thicknesses were examined. Correlation...
Multi-walled carbon nanotubes (MWCNTs) are shown to disperse in water, and be functionalized using RNA so that MWCNT/RNA hybrids can be fabricated on substrates by spray method. The material has strong adhesion on glass substrates or metal wires. A liquid elastomer surface treatment is used to make the field emitter tips protrude from the cathode. Possible methods of realizing field emitter sources,...
Non-isothermal growth of carbon nanotubes (CNTs) was studied in order to obtain the activation energy. CNTs were grown on an Fe–Si catalyst using microwave plasma-enhanced chemical vapor deposition of CH 4 . During the growth, the substrate was heated by the plasma such that its temperature increased with the growth until equilibrium was reached. In other words, the CNT growth took place under...
A recently developed self-assembled method, involving the use of a single metal target and a fixed substrate in a sputter deposition chamber, was used for the growth of various metal-containing diamond-like carbon thin films. The metals used include, Cu, Pt, and Ni. The resulting films consist of self-assembled alternating dark and bright layers, both of which constitute a period. The dark layer was...
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