Production of large-diameter single-wall carbon nanotubes by adding Fe to a NiCo catalyst in laser ablation

Article Abstract:

The production of single-wall carbon nanotubes with controlled diameter distributions by laser ablation is enabled by simple introduction of Fe into a conventional NiCo catalyst. The Fe helps increase the aggregation rate of metal in laser ablation and enlarges the crystal lattice constant of metal catalysts because of a change in the crystal structure from Ni to Ni3Fe, NiFe2, which then results in the enlargement of metal particles and the growth of larger diameter SWNTs.

Iron, Iron (Metal), Nickel

---

Electronic properties of n-type Carbon nanotubes prepared by CF(sub 4) plasma fluorination and amino functionalization

Article Abstract:

A study on single-walled carbon nanotubes (SWNT) that were fluorinated by CF(sub 4) plasma exposure and functionalized with 1,2-diaminoethane and reactions at both the ends of the rod were observed to increase with fluorine content. The study revealed that the back-gated SWNT devices show p-type semiconducting behavior for CF(sub 4)-functionalized SWNTs and n-type semi conducting behavior for ammino-functionalized SWNTs.

Carbon, Semiconductor doping

---

Electronic structures and conductivity in peptide nanotubes

Article Abstract:

The investigation of the conductivity of the modified cyclic D,L-peptide nanotubes through calculations of electron tunneling probability was found to depend on the length of the molecule, L, as [e.sup.-[beta](E)L], where the tunneling beta(E)-factor is strongly energy-dependent.

Analysis, Peptides, Electron configuration

Similar abstracts:

• Abstracts: Adsorption of spillover hydrogen atoms on single-wall carbon nanotubes. A statistical rate theory approach to kinetics of dissociative gas adsorption on solids
• Abstracts: Chemical reaction of nitric oxides with the 5-IDB defect of the single-walled carbon nanotube. FTIR and reaction kinetics studies of the Hydrodehalogenation of CF2Br2, CH2Br2, and CDBr2 over a Pd/gamma-Al2O3 catalyst
• Abstracts: Structural elucidation of thiophene interaction with ionic liquids by multinuclear NMR spectroscopy
• Abstracts: A theoretical investigation of the interactions between water molecules and ionic liquids. Spintronic transport through polyphenoxyl radical molecules
• Abstracts: Cation distribution and size-strain microstructure analysis in ultrafine Zn-Mn ferrites obtained from acetylacetonato complexes

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.