نتایج جستجو برای: swnt engle walled carbon nanotube

تعداد نتایج: 290287  

Journal: :Nano letters 2006
O N Torrens D E Milkie M Zheng J M Kikkawa

Photoluminescence (PL) identifies spectroscopic signatures of intertube transfer of optically pumped carriers in single-walled carbon nanotube (SWNT) ensembles. Resonant photoexcitation of large band gap SWNTs produces strong PL from smaller band gap SWNTs. Magnetic alignment measurements associate the energy-transfer PL peaks with the formation of SWNT bundles, suggesting that efficient coupli...

Polycyclic aromatic hydrocarbons (such as, anthracene, benzo[a]pyrene and so on) are non-polar, hydrophobic compounds, which are not ionized. They are only slightly soluble in water. They are very dangerous compounds in the environment. The single-walled carbon nanotube (SWNT) is used for removal and conversion of anthracene to low-risk products. In this study, electron transfer between anthrac...

Journal: :Global Journal of Science Frontier Research 2022

We will study the competitive effect between transport of a quantum dot adsorbed to ballistic channel and laterally coupled single-walled carbon nanotube (SWNT). use “tight-binding" approach analytically write SWNT Green's function be solved by atomic method for. present curves electronic density states for some different sizes nanotubes. The results conductance presented as values n hopping dot.

Journal: :Nanotechnology 2011
Kristy J Kormondy Paul Stokes Saiful I Khondaker

We report the fabrication and electron transport investigation of individual local-gated single-walled carbon nanotube field effect transistors (SWNT-FET) with high yield using a semiconducting-rich carbon nanotube solution. The individual semiconducting nanotubes were assembled at the selected position of the circuit via dielectrophoresis. Detailed electron transport investigations on 70 devic...

2000
Barry Chin Li Cheung Chin Li Cheung Jason H. Hafner Teri W. Odom Kyoungha Kim Charles M. Lieber

Single-walled carbon nanotube ~SWNT! probe microscopy tips were grown by a surface growth chemical vapor deposition method. Tips consisting of individual SWNTs ~1.5–4 nm in diameter! and SWNT bundles ~4–12 nm in diameter! have been prepared by design through variations in the catalyst and growth conditions. In addition to high-resolution imaging, these tips have been used to fabricate SWNT nano...

Journal: :Nanotechnology 2012
Osman Balci Coskun Kocabas

We have studied the high frequency performance limits of single-walled carbon nanotube (SWNT) transistors in the diffusive transport regime limited by the acoustic phonon scattering. The relativistic band structure of single-walled carbon nanotubes combined with the acoustic phonon scattering provides an analytical model for the charge transport of the radio frequency transistors. We were able...

2014
Shayesteh Haghighatpanah Martin Bohlén Kim Bolton

Molecular dynamics (MD) and molecular mechanics (MM) methods have been used to investigate additive-polymer interfacial properties in single walled carbon nanotube (SWNT)-polyethylene and SWNT-polyacrylonitrile composites. Properties such as the interfacial shear stress and bonding energy are similar for the two composites. In contrast, functionalizing the SWNT with carboxylic acid groups leads...

Journal: :Nano letters 2010
Feihu Wang Mikhail E Itkis Robert C Haddon

We report a comprehensive study of the gate-induced electromodulated transmittance of infrared light by single-walled carbon nanotube (SWNT) thin films. The observed electromodulation is significantly enhanced by utilizing large diameter SWNTs, increasing the ratio of semiconducting to metal SWNTs, and by decreasing the SWNT film thickness. The amplitude of the effect reported herein ( approxim...

2016
Fangming Du John E. Fischer Karen I. Winey

A coagulation method that provides better dispersion of SWNT in the polymer matrix has been used to produce single-walled carbon nanotube (SWNT)/poly(methyl methacrylate) (PMMA) composites. Optical microscopy and SEM show improved dispersion of SWNT in the PMMA matrix, which is a key factor in composite performance. Aligned and unaligned composites were made with purified SWNT with different SW...

Journal: :Optics letters 2012
Padmnabh Rai Nicolai Hartmann Johann Berthelot Gérard Colas-des-Francs Achim Hartschuh Alexandre Bouhelier

In this work, we demonstrate propagating surface plasmon polariton (SPP) coupled photoluminescence (PL) excitation of single-walled carbon nanotube (SWNT). SPPs were launched at a few micrometers from individually marked SWNT, and plasmon-coupled PL was recorded to determine the efficiency of this remote in-plane addressing scheme. The efficiency depends upon the following factors: (i) longitud...

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