نتایج جستجو برای: single walled

تعداد نتایج: 879410  

2006
Boris Reznik Koyo Norinaga Dagmar Gerthsen Olaf Deutschmann

[1] Liu C, Cheng HM, Cong HT, Li F, Su G, Zhou BL, et al. Synthesis of macroscopically long ropes of well-aligned single-walled carbon nanotubes. Adv Mater 2000;12(16):1190–2. [2] Nikolaev P, Bronikowski M, Bradley RK, Rohmund F, Colbert DT, Smith KA, et al. Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monooxide. Chem Phys Lett 1999;313(1–2): 91–7. [3] Hata K, Futaba...

Journal: :Journal of the American Chemical Society 2004
Lei An Qiang Fu Chenguang Lu Jie Liu

Semiconducting-only single-walled carbon nanotube (SWNT) network field effect transistors (FETs) have been fabricated by selectively reacting all the metallic SWNTs in the devices with diazonium reagents in a controlled manner. We have shown that the concentration of diazonium reagents used is crucial for selectively eliminating metallic SWNTs and keeping semiconducting ones intact. Excessive a...

Journal: :Nanotechnology 2016
J Yoon B Choi S Choi J Lee M Jeon Y Lee J Han D M Kim D H Kim S Kim S-J Choi

The interface trap density in single-walled carbon nanotube (SWNT) network thin-film transistors (TFTs) is a fundamental and important parameter for assessing the electronic performance of TFTs. However, the number of studies on the extraction of interface trap densities, particularly in SWNT TFTs, has been insufficient. In this work, we propose an efficient technique for extracting the energy-...

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...

Journal: :The Journal of chemical physics 2012
Hangjun Lu Xuechuan Nie Fengmin Wu Xiaoyan Zhou Jianlong Kou Yousheng Xu Yang Liu

By using molecular dynamics simulation, we have investigated systematically the feasibility of continuous unidirectional water flux across a deformed single-walled carbon nanotube (SWNT) driven by an oscillating charge outside without osmotic pressure or hydrostatic drop. Simulation results indicate that the flux is dependent sensitively on the oscillating frequency of the charge, the distance ...

Journal: :Journal of nanoscience and nanotechnology 2008
Haiming Duan Arne Rosén Avetik Harutyunyan Stefano Curtarolo Kim Bolton

Density functional theory (DFT) calculations show that dimers and longer carbon strings are more stable than individual atoms on Fe(111) surfaces. It is therefore necessary to consider the formation of these species on the metal surfaces and their effect on the mechanism of single-walled nanotube (SWNT) growth. The good agreement between the trends (energies and structures) obtained using DFT a...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Qiang Fu Jie Liu

Field-effect transistors were fabricated using high-density single-walled carbon nanotube (SWNT) thin films directly grown on suitable substrates. Such approach eliminated the variations of device behaviors in individual SWNT devices by utilizing a large number of SWNTs in each device. We have found that the behaviors of such devices are closely related to the surface charge densities around SW...

Journal: :Physical review letters 2005
T Yildirim S Ciraci

We report a first-principles study, which demonstrates that a single Ti atom coated on a single-walled nanotube (SWNT) binds up to four hydrogen molecules. The first H2 adsorption is dissociative with no energy barrier while the other three adsorptions are molecular with significantly elongated H-H bonds. At high Ti coverage we show that a SWNT can strongly adsorb up to 8 wt % hydrogen. These r...

2007
Yuan Lin Junichiro Shiomi Shigeo Maruyama Gustav Amberg

We theoretically investigate the impact of the electrothermal flow on the dielectrophoretic separation of single-walled carbon nanotubes (SWNT). The electrothermal flow is observed to control the motions of semiconducting SWNTs in a sizeable domain near the electrodes under typical experimental conditions, therefore helping the dielectrophoretic force to attract semiconducting SWNTs in a broade...

Journal: :Journal of the American Chemical Society 2004
Gordana Dukovic Brian E White Zhiyong Zhou Feng Wang Steffen Jockusch Michael L Steigerwald Tony F Heinz Richard A Friesner Nicholas J Turro Louis E Brus

We have investigated reversible single-wall carbon nanotube (SWNT) oxidation by quantitative analysis of the oxide-induced absorption bleaching and luminescence quenching at low pH. These data, in combination with DFT structure calculations, suggest that the nanotube oxide is a 1,4-endoperoxide. At low pH, the endoperoxide protonates to create a hydroperoxide carbocation, introducing a hole in ...

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