نتایج جستجو برای: wall nanotubes

تعداد نتایج: 195835  

2003
T. Vodenitcharova L. C. Zhang

This paper investigates the effective wall thickness of a single-walled carbon nanotube, a critical quantity for any research in mechanics and property characterization of carbon nanotubes. To this end, the response of a bundle of single-walled carbon nanotubes to external hydrostatic pressure was modeled using the ring theory of continuum mechanics. The model predicted that the equivalent thic...

B. Khoshnevisan F. Kanjouri H. Tashakori Z. S. Naghavi

In this paper, we have used density functional perturbation theory (DFPT) and Pseudo-potential method to calculate the phonon spectrum, phonon density of states (DOS), specific heat capacity and mechanical properties of (5,5) armchair and (9,0) zigzag Single Wall Carbon Nanotubes (SWCNTs). Our calculations show that Young’s modulusfor (5,5) and (9,0) nanotubesare higher than 1TPa. We have also ...

Journal: :iranian chemical communication 2015
jamal afzali sedigheh sadegh hassani

magnetic force microscope ( mfm ) is a powerful technique for mapping the magnetic force gradient above the sample surface. herein, single-wall carbon nanotubes (swcnt) were used to fabricate mfm probe by dielectrophoresis method which is a reproducible and cost-effective technique. the effect of induced voltage on the deposition manner of carbon nanotubes (cnt) on the atomic force microscope (...

Journal: :Applied Physics A: Materials Science & Processing 1999

2007
F. Hasi F. Simon H. Kuzmany

Thin films of SWCNTs were prepared from toluene suspension of single wall carbon nanotubes. The material was dropped on silicon and platinum surfaces with a controlled thickness. Filling with C60 and DWCNT – transformation of the films was performed. Multifrequency Raman spectroscopy was used to follow the peapod formation process and double wall transformation of the tubes. An efficient fillin...

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...

2012
Shelby B. Hutchens Alan Needleman Julia R. Greer

Related Articles Distinguishing defect induced intermediate frequency modes from combination modes in the Raman spectrum of single walled carbon nanotubes J. Appl. Phys. 111, 064304 (2012) Effect of bending buckling of carbon nanotubes on thermal conductivity of carbon nanotube materials J. Appl. Phys. 111, 053501 (2012) Nanotorsional actuator using transition between flattened and tubular stat...

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