Results 231 to 240 of about 5,243,930 (293)

A high-performance reagent-less sensor based on copper(ii) phthalocyanines supported by multi-walled carbon nanotubes for phosphate detection. [PDF]

RSC Adv
Talbi M, Anurag A, Tegenkamp C, Ben Ali M, Kanoun O.   +4 more
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Purification of Multi-Walled Carbon Nanotubes

Journal of Nanoscience and Nanotechnology, 2008
The discovery of carbon nanotubes (CNTs) has stimulated intensive research to characterize their structure and to determine their physical properties, both by direct measurement and through predictive methods. Many of the fundamental and remarkable properties of CNTs are now well-known, and their exploitation in a wide range of applications forms a ...
Sreejarani K, Pillai, Suprakas Sinha, Ray, Mathew, Moodley   +2 more
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Multi-Walled Carbon Nanotube Growth in Multi-Walled Carbon Nanotubes by Chemical Vapor Deposition

Journal of Nanoscience and Nanotechnology, 2015
We report chemical vapor deposition (CVD) growth of a multi-walled carbon nanotube (MWCNT) inside another MWCNTs from a cementite (Fe3C) catalyst nanoparticles. The CNTs have bi or tri-layered core(s)-sheath structure with various crystallinity. The sheath grows first at a lower temperature, and then the catalyst nanoparticle works again to grow the ...
Takayuki, Hasegawa, Daniel J, Arenas, Hideo, Kohno   +2 more
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Electrical Characterization of Multi-Walled Carbon Nanotubes

Journal of Nanoscience and Nanotechnology, 2010
Electrical characteristics of multi-walled carbon nanotubes (MWNTs) grown by chemical vapor deposition have been investigated as a function of the bias voltage, nanotubes length and temperature, in 2 and 4 terminal configurations. Nanotubes were deposited over metal electrodes using ac dielectrophoresis method. For better contacts between the nanotubes
J, León, A, Flacker, A R, Vaz, C, Veríssimo, M B, de Moraes, S A, Moshkalev   +5 more
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Optoelectronic modulation by multi-wall carbon nanotubes

Nanotechnology, 2013
We report the observation of photoconduction and a strong nonlinear optical absorptive response exhibited by multi-wall carbon nanotubes. An aerosol pyrolysis method was employed for the preparation of the samples. Measurements of the optical transmittance with 7 ns pulses at 1064 nm wavelength allowed us to identify a two-photon absorption effect as ...
C, Torres-Torres, N, Peréa-López, H, Martínez-Gutiérrez, M, Trejo-Valdez, J, Ortíz-López, M, Terrones   +5 more
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Nanomechanical imaging of multi-walled carbon nanotubes

MRS Proceedings, 2003
AbstractNanomechanical mapping of individual multi-walled carbon nanotubes (MWNTs) has been undertaken to investigate intra-tube variations of mechanical response. Ultrasonic force microscopy has been used to measure the relative axial and radial variations of contact stiffness of individual MWNTs synthesized using chemical vapor deposition (CVD) and ...
Lata Muthuswami, P. M. Ajayan, R. E. Geer   +2 more
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Comparing in vitro cytotoxicity of graphite, short multi-walled carbon nanotubes, and long multi-walled carbon nanotubes

Environmental Science and Pollution Research, 2020
Occupational and environmental exposures to carbon-based materials in nano- and micro-size have been reported. There is incomplete information on the impact of size on the toxicity of carbon-based materials. The objective of this study is to compare the toxicity of graphite, short multi-walled carbon nanotubes (S-MWCNTs), and long multi-walled carbon ...
Mansour Rezazadeh Azari, Yousef Mohammadian   +1 more
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Respiratory toxicity of multi-wall carbon nanotubes

Toxicology and Applied Pharmacology, 2005
Carbon nanotubes focus the attention of many scientists because of their huge potential of industrial applications, but there is a paucity of information on the toxicological properties of this material. The aim of this experimental study was to characterize the biological reactivity of purified multi-wall carbon nanotubes in the rat lung and in vitro.
Julie, Muller, François, Huaux, Nicolas, Moreau, Pierre, Misson, Jean-François, Heilier, Monique, Delos, Mohammed, Arras, Antonio, Fonseca, Janos B, Nagy, Dominique, Lison   +9 more
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Bio-functionalization of multi-walled carbon nanotubes

Physical Chemistry Chemical Physics, 2013
Here we present a hybrid approach to functionalize multi-walled carbon nanotubes in aqueous solution, exploring a non-covalent binding strategy. We focus on formation of hybrid complexes consisting of carbon nanotubes decorated by single stranded DNA, non-covalently attached using surfactants as intermediate layers.
Anindya, Majumder, Maryam, Khazaee, Jörg, Opitz, Eckhard, Beyer, Larysa, Baraban, Gianaurelio, Cuniberti   +5 more
openaire   +2 more sources