نتایج جستجو برای: carbon nanotubes cnt

تعداد نتایج: 288474  

Journal: :Macromolecular rapid communications 2009
Pablo Jiménez Wolfgang K Maser Pere Castell M Teresa Martínez Ana M Benito

Water dispersible nanofibrilar polyaniline (NF-PANI) provides a novel and direct route towards carbon nanotube water dispersions of high concentration. Carrying out the chemical synthesis of NF-PANI in the presence of carbon nanotubes (CNTs) results in an entirely nanostructured nanofibrilar polyaniline/carbon nanotube (NF-PANI/CNT) composite material that contains well segregated CNTs partiall...

Journal: :Physical chemistry chemical physics : PCCP 2014
Jin-lei Wang Ke-feng Ren Hao Chang Shi-miao Zhang Lie-jiang Jin Jian Ji

Thin organic films containing carbon nanotubes (CNTs) have received increasing attention in many fields. In this study, a robust thin superhydrophobic film has been created by using layer-by-layer assembly of the carbon nanotubes wrapped by poly(dopamine) (CNT@PDA) and poly(ethyleneimine) (PEI). UV-vis spectroscopy, ellipsometry, and quartz crystal microbalance with dissipation (QCM-D) measurem...

2009
Srinivasa R. Bakshi Ruben G. Batista Arvind Agarwal

1359-835X/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.compositesa.2009.06.004 * Corresponding author. Tel.: +1 305 348 1701; fax E-mail address: [email protected] (A. Agarwal). Quantification of the quality of distribution is essential in carbon nanotube (CNT) composites since it reflects the homogeneity of the properties. In this work, an attempt is made to quantify the quality of dis...

2009
Zhenan Bao

Objective This project is investigating the use of carbon nanotubes (CNT) for transparent conducting electrodes in photovoltaic applications. In order to decrease the sheet resistance, both the electronic properties of the CNTs – namely the tube conductivity and tube-to-tube contact resistance – and the sheet morphology have to be controlled. This research aims to reach this target through the ...

2007
RB Rakhi K Sethupathi S Ramaprabhu

Multi-walled carbon nanotubes (MWNT) have been synthesized by chemical vapour decomposition (CVD) of acetylene over Rare Earth (RE) based AB2(DyNi2) alloy hydride catalyst. The as-grown carbon nanotubes were purified by acid and heat treatments and characterized using powder X-ray diffraction, Scanning Electron Microscopy, Transmission Electron Microscopy, Thermo Gravimetric Analysis and Raman ...

Journal: :Chemical communications 2010
Martin Kühnast Carsten Tschierske Jan Lagerwall

We present a potent multifunctional molecular design concept for promoting the dispersion of carbon nanotubes (CNTs) in thermotropic liquid crystals (LCs), making CNT-in-LC dispersions of unprecedented stability possible and broadening the scope of potential applications.

Journal: :international journal of nano dimension 0
f.s. garmaroudi the james hogg capture centre for cardiovascular and pulmonary research, providence heart + lung institute at st. paul's hospital, departments of pathology and laboratory medicine, university of british columbia, vancouver, british columbia, canada r.a.r. vahdati department of genetics, manchester university, uk

carbon nanotubes (cnts) are high aspect ratio allotropes of carbon. because of their unique physical and chemical characteristics, they are nominated for a vast variety of applications in the biomedical field. their very low solubility is the only problem of them which is solved by different methods of functionalization. after discoveries in the last few years of the capacity of cnts to penetra...

Journal: :Optics letters 2009
Ranjith R Haider Butt Timothy D Wilkinson

The carbon nanotube-liquid-crystal (CNT-LC) nanophotonic device is a class of device based on the hybrid combination of a sparse array of multiwall carbon nanotube electrodes grown on a silicon surface in a liquid-crystal cell. The multiwall carbon nanotubes act as individual electrode sites that spawn an electric-field profile, dictating the refractive index profile within the liquid crystal a...

Journal: :Science 2013
Natnael Behabtu Colin C Young Dmitri E Tsentalovich Olga Kleinerman Xuan Wang Anson W K Ma E Amram Bengio Ron F ter Waarbeek Jorrit J de Jong Ron E Hoogerwerf Steven B Fairchild John B Ferguson Benji Maruyama Junichiro Kono Yeshayahu Talmon Yachin Cohen Marcin J Otto Matteo Pasquali

Broader applications of carbon nanotubes to real-world problems have largely gone unfulfilled because of difficult material synthesis and laborious processing. We report high-performance multifunctional carbon nanotube (CNT) fibers that combine the specific strength, stiffness, and thermal conductivity of carbon fibers with the specific electrical conductivity of metals. These fibers consist of...

Journal: :Journal of the American Chemical Society 2010
Yossi Weizmann David M Chenoweth Timothy M Swager

Despite many advances in carbon nanotube (CNT) research, several issues continue to plague the field with regard to the construction of well-defined hybrid CNT materials. Regiospecific covalent functionalization, nonspecific surface absorption, and carbon nanotube aggregation/bundling present major difficulties when working with these materials. In this communication, we circumvent these proble...

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