Results 241 to 250 of about 5,243,930 (293)

Multi-Walled Carbon Nanotubes

2013
Multi-walled carbon nanotubes (MWCNTs) are elongated cylindrical nanoobjects made of sp2 carbon. Their diameter is 3–30 nm and they can grow several cm long, thus their aspect ratio can vary between 10 and ten million. They can be distinguished from single-walled carbon nanotubes on the basis of their multi-walled Russian-doll structure and rigidity ...
Kukovecz Ákos, Kozma Gábor, Kónya Zoltán   +2 more
openaire   +2 more sources

Magnetic Properties of Multi-Walled Carbon Nanotubes

Journal of Nanoscience and Nanotechnology, 2009
The magnetic properties of multiwall carbon nanotubes (MWCNTs) grown by microwave plasma enhanced chemical vapor deposition (MPECVD) were studied by electron paramagnetic resonance and magnetization measurements. The ferromagnetic characters of virgin grown MWCNTs are mainly attributed to the catalyst nanoparticles embedded on the tips.
Lun-Wei, Chang, Juh-Tzeng, Lue
openaire   +2 more sources

The hepatotoxicity of multi-walled carbon nanotubes in mice

Nanotechnology, 2009
The hepatotoxicity of two types of multi-walled carbon nanotubes (MWCNTs), acid-oxidized MWCNTs (O-MWCNTs) and Tween-80-dispersed MWCNTs (T-MWCNTs), were investigated with Kunming mice exposed to 10 and 60 mg kg(-1) by intravenous injection for 15 and 60 d.
Zongfei, Ji, Danying, Zhang, Ling, Li, Xizhong, Shen, Xiaoyong, Deng, Ling, Dong, Minhong, Wu, Yuanfang, Liu   +7 more
openaire   +2 more sources

Multi‐walled carbon nanotubes plastic actuator

physica status solidi (b), 2009
AbstractCarbon nanotubes (CNTs) have electrical and mechanical properties that make them highly attractive for actuators. They have the ability to deform elastically by several percent, thus storing very large amounts of energy, thanks to their crystalline nature and to their morphology.
Biso M., Ricci D.
openaire   +2 more sources

Polystyrene grafted multi-walled carbon nanotubes

Chemical Communications, 2002
Oxidised, multi-walled, carbon nanotubes can be grafted with polystyrene molecules using an situ radical polymerisation reaction, thereby dramatically modifying their solubility and their suitability for nanocomposite applications.
M S P, Shaffer, K, Koziol
openaire   +2 more sources

Preparation and Characterization of Oxidized Multi-Walled Carbon Nanotubes and Glycine Functionalized Multi-Walled Carbon Nanotubes

Fullerenes, Nanotubes and Carbon Nanostructures, 2014
In this work, oxidized multi-walled carbon nanotubes (MWCNTs) and glycine functionalized MWCNTs were synthesized and characterized using ultraviolet-visible (UV-Vis), fourier transform infrared (FT-IR), electron paramagnetic resonance (EPR), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques..
M. Deborah, A. Jawahar, T. Mathavan, M. Kumara Dhas, A. Milton Franklin Benial   +4 more
openaire   +1 more source

Multi-walled carbon nanotube impedance

2010 IEEE International Conference on Integrated Circuit Design and Technology, 2010
In future technologies, people will confront with traditional Cu interconnect problems and there is a widespread demand for single-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT). One of the most important parts in carbon nanotube interconnects is their impedance. Thus we investigate impedance, especially dc resistance, in multi
Iman Madadi, Hossein Aghababa, Behjat Forouzandeh   +2 more
openaire   +1 more source

CESR in multi walled carbon nanotubes

Physica E: Low-dimensional Systems and Nanostructures, 2003
Abstract We have clarified carrier spin relaxation process in multi walled carbon nanotubes (MWCNT) fabricated by DC arc discharge and studied the fundamental transport mechanism in MWCNT by means of electron spin resonance (ESR) in order to discuss on the transport properties in the MWCNT.
Satoshi Ishii, Nobuyuki Aoki, Koichirou Miyamoto, Nobuko Oguri, Kazunaga Horiuchi, Yuichi Ochiai   +5 more
openaire   +1 more source

Cutting of multi walled carbon nanotubes

Applied Surface Science, 2006
Abstract Multi walled carbon nanotubes (MCNT) synthesized by CVD method have been successfully cut into different lengths by controlling H2SO4/HNO3 (5:3) oxidation time. During the cutting process H2SO4 and HNO3 were added independently and the oxidation processes were carried out at a lower temperature to void excess weight loss and damage to MCNT ...
Jinyong Li, Yafei Zhang
openaire   +1 more source

Silylation of multi-walled carbon nanotubes

Chemical Physics Letters, 2003
Functionalisation of carbon nanotubes is expected to improve their utility in a range of applications. This paper describes a method of silylating multi-walled nanotubes that have first been acid treated in order to introduce polar surface groups. A range of reagents were tested and N-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide (MTBSTFA) or 1-(
Masami Aizawa, Milo S.P Shaffer
openaire   +1 more source