nanotubes – Page 5 – TechConnect Briefs

Carbon Nanotube- and Nanofibre-reinforced Polymer Fibres

Shaffer M.S.P., Sandler J.K.W., Pegel S., Windle A.H., Gojny F., Schulte K., Cadek M., Blau W.J., Lohmar J., van Es M., Imperial College, UK

A range of multi-wall carbon nanotubes and carbon nanofibres were mixed with a polyamide-12 matrix using a twin-screw microextruder, and the resulting blends used to produce a series of reinforced polymer fibres. The aim was [...]

Structural and Mechanical Properties of Double Wall Carbon Nanotubes

Bacsa R.R., Bacsa W.S., Flahaut E., Laurent Ch., Peigney A., Puech P., Bacsa R.R., Bacsa W.S., LPST Université Paul Sabatier, FR

Narrow diameter double walled carbon nanotubes can now be grown by the catalytic chemical vapor deposition process with high yield. Double walled carbon nanotubes are the molecular analogs to coaxial cables and they can also [...]

Multiscale modeling in Nanotechnology

Maiti A., Accelrys Inc., US

Technologically important nanomaterials come in all shapes and sizes. They can range from small molecules to complex composites and mixtures. Depending upon the spatial dimensions of the system and properties under investigation, computer modeling of [...]

A Schrödinger-Poisson Solver for Modeling Carbon Nanotube FETs

John D.L., Castro L.C., Pereira P.J.S., Pulfrey D.L., Department of Electrical and Computer Engineering, CA

Carbon nanotubes are attracting great interest for their use in nanoscale electronic devices. Recent modeling efforts of carbon nanotube field-effect transistors (CNFETs) have been successful in examining the subthreshold behaviour of these devices through a [...]

Toward an Integrated Computational Environment for Multiscale Computational Design of Nanoscale Ion Channel Semiconductors

Natarajan S., Varma S., Tang Y., Parker S., Mashl J., Jakobsson E., NCSA, US

This paper describes the design and operation of an integrated multiscale computational environment for design of nanoscale ion channel semiconductors, the Ion Channel Workbench. The present work builds on an earlier multiscale calculation from our [...]

Growth and Structure of Fullerene Thin Films and Other Carbon Nanomaterials

Katz E.A., Prilutskiy O., Faiman D., Shtutina S., Ezersky V., Mogilko E., Ben-Gurion University of the Negev, IL

The present paper reports relationships between structural characteristics of carbon materials and conditions of their production. C60 thin films were grown by a vacuum deposition technique on various substrates. We demonstrate effect of the substrate [...]

Utilization of SWNT-Filled Polystyrene Obtained by Miniemulsion Polymerization as a Modifier for High-Performance Epoxy Resins

Barraza H.J., Rueda O., Pompeo F., O'Rear E.A., Williams R.J.J., Resasco D.E., University of Oklahoma, US

One of the several reasons that engineering research aimed towards the purification, functionalization and incorporation of carbon nanotubes into polymeric matrices has been actively pursued for the last five years is that vastly important applications, [...]

Nano-sensors Based on Nanotubes: Deformed-nanotubes transport

Farajian A.A., Yakobson B.I., Mizuseki H., Kawazoe Y., Tohoku University, JP

The main purpose of the present work is to establishing a correspondence between mechanical deformation and transport properties, which is presumably useful in nano-sensor applications. As a byproduct of this study, the potential differences in [...]

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 [...]