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Vertically-aligned arrays of single walled carbon nanotubes were created on an optically transparent electrode (FTO glass) these arrays were found to exhibit a prompt current and voltage when exposed to light. These cells were then investigated by electrochemical impedance spectroscopy and found to exhibit a dampening of the recombination reaction over the first 24 hours. Symmetrical cell modeling...
The growth of multi-walled carbon nanotubes (MWNTs) with a large diameter of 200 nm on nickel (Ni) coated silicon wafer at different growth times up to 30 min was investigated. CNT cobwebs were found after a short growth time (7 min) and developed into ordered forests at higher growth times (> 10 min). One of the important formation features of the CNTs in this study was the coaxial structure of...
A vertically aligned nanotube (NT) array platform with peptide-modified ends is used for sensing metal ions in aqueous environments. The NT arrays were assembled on gold substrates and characterised using confocal Raman microscopy to confirm the electrode fabrication process. A copper ion selective peptide — GlyGlyHis was used as the sensing recognition element. Cyclic voltammetry was used to measure...
The synthesis of carbon nanotubes has been demonstrated using a two stage chemical vapour deposition process involving a high temperature stage to crack the carbon source and a lower temperature catalytic carbon nanotube growth stage. Pre-formed nickel nanoparticles have been used to catalyse the formation of carbon nanotubes and carbon nanofibres, depending on the reaction temperature. These results...
Previous molecular dynamics (MD) studies have suggested relationships that fail to predict the measurements of water flow through membranes of carbon nanotubes (CNTs). Through MD simulations of water transport over a flow rate range much wider than ever reported (0.002–1,400m/s) and use of flexible boundary condition, we discover a universal phenomenological logarithmic relationship between the CNT-water...
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