Results 251 to 260 of about 5,243,930 (293)

Multi-walled carbon nanotube sensors

TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664), 2004
This paper presents experimental results that demonstrate the sensing capability of a multi-walled carbon nanotube (MWCNT). A MEMS-based fabrication process was developed to fabricate a device where a single MWCNT was precisely assembled across a gap.
J. Chung, K.-H. Lee, J. Lee
openaire   +1 more source

Functionalization of Multi-Walled Carbon Nanotubes

Materials Science Forum, 2007
In order to alter the physical/chemical characteristics of multi-walled carbon nanotubes (MWNTs) we modified them by different organic reactions (Diels-Alder and Sand-Meyer reaction, oxidation) and their d properties were characterized by thermogravimetry/mass spectrometry, photoelectron spealterectroscopy, and nuclear magnetic resonance spectroscopy ...
A. Gergely, J. Telegdi, Erika Kálmán
openaire   +1 more source

Microtrapping characteristics of single and multi-walled carbon nanotubes

Journal of Chromatography A, 2008
Carbon nanotubes (CNTs) possess some highly desirable sorbent characteristics, which make them attractive for a variety of applications including micro-scale preconcentration. The main advantage of CNTs is that they are non-porous, thus eliminating the mass transfer resistance related to diffusion into pore structures. Their high aspects ratio leads to
Chaudhery Mustansar, Hussain, Chutarat, Saridara, Somenath, Mitra   +2 more
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Multi-Walled Carbon Nanotubes without and with Metal Filling

Journal of Metastable and Nanocrystalline Materials, 2005
Electron microscope studies are reported of MWCNTs without and with metallic encapsulations prepared by pyrolysis of organo-metallic precursors such as iron(II)phthalocyanine and ferrocene/anthracene mixtures. For straight and well-ordered MWCNTs, we obtained clear evidence of a scroll type structure with uniform chirality.
Schaper, A., Hou, H., Treutmann, W., Phillipp, F.   +3 more
openaire   +2 more sources

Effect of multi‐walled carbon nanotubes dispersity on the light transmittancy of multi‐walled carbon nanotubes/epoxy composites

Polymer Engineering & Science, 2006
AbstractTwo types of multi‐walled carbon nanotubes (MWCNTs), chemically modified and unmodified, were dispersed in epoxy resin with ultrasonication. The light transmittance characteristics of epoxy composites with different ratios of MWCNTs to epoxy resin were measured at wavelengths ranging from 200 to 1100 nm.
Jianguo Wang, Zhengping Fang, Aijuan Gu
openaire   +1 more source

Growth of compound single- and multi-walled carbon nanotubes

Ultramicroscopy, 2004
Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) are complement to each other in many of their physical properties. We report the synthesis of carbon nanotube cables-a form of compound single- and multi-walled carbon nanotubes which could have the superior properties of both the SWCNTs and MWCNTs. This compound form of
L M, Peng, Z J, Shi, Z L, Zhang, L, Ouyang, Z N, Gu, Z Q, Xue, Q D, Wu   +6 more
openaire   +2 more sources

Collapse and stability of single- and multi-wall carbon nanotubes

Nanotechnology, 2007
The collapse and stability of carbon nanotubes (CNTs) have important implications for their synthesis and applications. While nanotube collapse has been observed experimentally, the conditions for the collapse, especially its dependence on tube structures, are not clear.
J, Xiao, B, Liu, Y, Huang, J, Zuo, K-C, Hwang, M-F, Yu   +5 more
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Well-Aligned Multi-Walled Carbon Nanotubes and Their Photoresponse

Journal of Nanoscience and Nanotechnology, 2009
In this paper we report efficient growth of well-aligned multi-walled carbon nanotube (MWNT) forest by chemical vapor deposition (CVD). Under optimized parameters, the growth rate can be 15 microm/min and the average diameter is about 10 nm. Large photocurrent can be generated in a bundle of MWNT using camera flash. The photocurrent depends linearly on
Haibo, Huang, Zheng, Liu, Yuanchun, Zhao, Kaihong, Zheng, Sishen, Xie, Lianfeng, Sun   +5 more
openaire   +2 more sources

Macrodispersion of Multi-Walled Carbon Nanotubes for Conductive Films

Journal of Nanoscience and Nanotechnology, 2012
Understanding of the effect of the multi-walled carbon nanotube (MWCNT) dispersion process on physical properties of MWCNT film is crucial in process optimization of MWCNT film-based products. In the present work, the electrical conduction property of MWCNT films according to various conditions in MWCNT dispersion is investigated.
Duckjong, Kim, Lijing, Zhu, Jae-Hyun, Kim, Chang-Soo, Han, Seunghyun, Baik   +4 more
openaire   +2 more sources

Ag-catalysed cutting of multi-walled carbon nanotubes

Nanotechnology, 2016
In this work, the cutting of carbon nanotubes is investigated using silver nanoparticles deposited on arc discharge multi-walled carbon nanotubes. The composite is subsequently heated in air to fabricate shortened multi-walled nanotubes. Complementary transmission electron microscopy and spectroscopy techniques shed light on the cutting mechanism.
A La Torre, G A Rance, S A Miners, C Herreros Lucas, E F Smith, M W Fay, T Zoberbier, M C Giménez-López, U Kaiser, P D Brown, A N Khlobystov   +10 more
openaire   +3 more sources