نتایج جستجو برای: multi walled nanotubes

تعداد نتایج: 496541  

Journal: :Nanoscale research letters 2016
Yurii Stubrov Andrii Nikolenko Viktor Gubanov Viktor Strelchuk

Micro-Raman spectra of single-walled carbon nanotubes in the range of two-phonon 2D bands are investigated in detail. The fine structure of two-phonon 2D bands in the low-temperature Raman spectra of the mixture and individual single-walled carbon nanotubes is considered as the reflection of structure of their π-electron zones. The dispersion behavior of 2D band fine structure components in the...

Journal: :Journal of Thermal Science and Technology 2012

Journal: :Nature materials 2010
Sung You Hong Gerard Tobias Khuloud T Al-Jamal Belén Ballesteros Hanene Ali-Boucetta Sergio Lozano-Perez Peter D Nellist Robert B Sim Ciara Finucane Stephen J Mather Malcolm L H Green Kostas Kostarelos Benjamin G Davis

Functionalization of nanomaterials for precise biomedical function is an emerging trend in nanotechnology. Carbon nanotubes are attractive as multifunctional carrier systems because payload can be encapsulated in internal space whilst outer surfaces can be chemically modified. Yet, despite potential as drug delivery systems and radiotracers, such filled-and-functionalized carbon nanotubes have ...

Journal: :Physical review letters 2007
J Y Huang S Chen Z F Ren Z Wang K Kempa M J Naughton G Chen M S Dresselhaus

We report exceptional ductile behavior in individual double-walled and triple-walled carbon nanotubes at temperatures above 2000 degrees C, with tensile elongation of 190% and diameter reduction of 90%, during in situ tensile-loading experiments conducted inside a high-resolution transmission electron microscope. Concurrent atomic-scale microstructure observations reveal that the superelongatio...

2004
Daniel Barrow Amol Patil Andrew G. Rinzler

Individual multi-walled carbon nanotubes were investigated for their usefulness as nanoscale electrochemical electrodes. The nanotubes were mounted on metal-coated atomic force microscopy tips, and the assembly was insulated with Parylene polymer. Approximately 200nm of the nanotube tip was exposed by use of a laser so the entire probe could be immersed in an electrolytic solution with only the...

Journal: :Chemical communications 2012
Julio C Zuaznabar-Gardona Roberto Cao Roberto Cao Margarita Suarez

Multiwalled carbon nanotubes modified with 2-aminoethanethiol (MWNT-AET) were vertically self-assembled on gold electrodes with the assistance of chitosan and Tween. According to AFM and cyclic voltammetric determinations the best results were achieved using chitosan.

Journal: :Nanotechnology 2009
Onejae Sul Eui-Hyeok Yang

A multi-walled carbon nanotube (MWNT) bimorph nanoactuator has been modeled, fabricated and characterized. A thin aluminum film was uniformly deposited on the sidewalls of MWNTs using a pulsed laser deposition method to create the bimorph nanostructure. For a temperature change from 290 to 690 K with measured dimensions of 100 +/- 20 nm for the MWNT diameter, 40 +/- 10 nm for the Al thickness, ...

Journal: :Nano letters 2006
V V Deshpande H-Y Chiu H W Ch Postma C Mikó L Forró M Bockrath

We exploit the remarkable low-friction bearing capabilities of multiwalled carbon nanotubes (MWNTs) to realize nanoelectromechanical switches. Our switches consist of two open-ended MWNT segments separated by a nanometer-scale gap. Switching occurs through electrostatically actuated sliding of the inner nanotube shells to close the gap, producing a conducting ON state. For double-walled nanotub...

2015
Daiane D Hartwig Kátia L Bacelo Thaís L Oliveira Rodrigo Schuch Fabiana K Seixas Tiago Collares Oscar Rodrigues Cláudia P Hartleben Odir A Dellagostin

We studied the feasibility of using halloysite clay nanotubes (HNTs) and carboxyl-functionalised multi-walled carbon nanotubes (COOH-MWCNTs) as antigen carriers to improve immune responses against a recombinant LipL32 protein (rLipL32). Immunisation using the HNTs or COOH-MWCNTs significantly increased the rLipL32-specific IgG antibody titres (p < 0.05) of Golden Syrian hamsters. None of the va...

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