Papers – Page 11 – TechConnect Briefs

Sidewall Functionalization of Single-Walled Carbon Nanotubes through C-N Bond Forming Substitution Reactions of Fluoronanotubes

Stevens J., Kini V.U., Huang A., Chiang I.W., Derrien G.A., Khabashesku V.N., Margrave J.L., Rice University, US

Because of the high reactivity of C-F bonds on the sidewalls of single-wall carbon nanotubes, fluorinated SWNTs (fluoronanotubes) can be used as precursors for further derivatization. One such reaction is to replace the fluorine with [...]

Adsorption of Gold Atoms on Carbon Nanotubes

da Silva A.J.R., da Silva E.Z., Carrijo Faria J., da Silva A.J.R., da Silva E.Z., Fazzio A., Universidade de Sao Paulo, BR

We study in detail the adsorption of Au on single walled carbon nanotubes (SWCN). All our results are based on ab initio total energy Density Functional Theory calculations using numerical orbitals as basis sets. We [...]

Carbon Nanotube Nano-Composite Fibers and Carbon Nanotube Fibers by Wet Spinning Process

Poulin P., Vigolo B., Bernier P., Paillet M., Launois P., Soutric F., Dieudonne M., Grac M., Gedda K., Nanoledge, FR

We gonna present our last developments over carbon nanotubes fibers. How we manage to go from lab process, to continuous process, and how we improve properties.

Mechanical Properties of SiC Nanotubes

Moon W.H., Ham J.K., Hwang H-J., Chung-Ang University, KR

We investigate the mechanical properties of SiC nanotubes using molecular dynamics simulation. We find that SiC nanotubes are less stiff than the other nanotubes considered so far, such as BN or C nanotubes. However, Youngs [...]

Effects of Stone-Wales Defect on Adsorption & Insertion Capacity of Nanotubes

Zhou L.G., Meng F.Y., Shi S.Q., Hong Kong Polytechnic University, CN

As more experimental results become available and theoretical investigations get deeper, carbon nanotube (CNT) is found to be not as perfect as it seems. Due to this reason, the presence and roles of defects in [...]

STM/STS Studies of SWNTs in Bundles, C60 Thin Films and DNA Molecules

Maruyama Y., Ikeda K., Suzuki K., Yoshikawa T., Kato T., Iijima M., Hosei University, JP

The electronic structures of individual carbon nanotubes in a bundle are characterized by STM/STS technique. It is statistically found that the tubes with the same character tend to be assembled in one bundle and its [...]

Monte Carlo Simulations of Nanotube Suspensions and Composites

Foygel M., Morris R.D., Anez D., French S., Sobolev V., South Dakota School of Mines and Technology, US

A Monte Carlo simulation code has been developed aimed at finding a critical fractional volume of the nanotubes suspended in a low thermo-or electro-conductive medium. Over more than two orders of magnitude, the critical fractional [...]

A Comparative Theoretical Study of Carbon and Boron-Nitride Single-wall Nanotubes

Akdim B., Duan X., Adams W.W., Pachter R., Air Force Research Laboratory, US

In this study, we focus on a comprehensive theoretical comparison between CNTs and BN-NTs, particularly for the radial breathing modes (RBMs), which are characteristic of nanotubes and do not have any corresponding modes in the [...]

Nanotubes and Nanoribbons in Displays, NEMS, and Chemical Sensors: Recent results from First-Principles Quantum Mechanics simulations

Maiti A., Accelrys Inc., US

Of the myriad of potential application areas commonly associated with Nanotechnology, sensors and displays are two of the closest ones to commercial reality. The two materials systems that have given rise to high hopes in [...]

Cutting, Solubilizing and Size-Sorting of Single-Wall Carbon Nanotubes

Gu Z., Peng H., Cratty J., Hauge R.H., Smalley R.E., Margrave J.L., Rice University, US

The fluorination of purified HiPco single-wall carbon nanotubes (SWNTs) to a stoichiometry CFx (x ≤ 0.2) followed by pyrolysis of the partially fluorinated SWNTs up to 1000 oC was found to have cut the nanotubes [...]