نتایج جستجو برای: multi walled carbon nanotube

تعداد نتایج: 744255  

In this work the synthesis of polyaniline/chitosan/functionalized single- walled carbon nanotube nanocomposite is carried out. For this purpose single -walled carbon nanotubes were reacted with thionyl chloride to change the hydroxyl to acyl chloride groups for improving the react ability. In other step, aniline monomers and chitosan were polymerized in the presence of Iron (III) chloride to sy...

Journal: :journal of ultrafine grained and nanostructured materials 2012
n. montakhab s. s. hassani a. rashidi m. r. aboutalebi h. arabi

this work is focused on synthesis of sio2- cnt hybrides via sol-gel method. homogeneous distribution of carbon nanotubes within silicon matrix was obtained by mixing the functionalized carbon nanotube (cntcooh) with active silicic acid followed by titration to the solution of sodium silicate (na2sio3) under the average temperature condition of 80?c. different ratios of multi-walled carbon nanot...

2010
Yongho Choi

Carbon nanotubes are promising nanoscale materials for novel electrical, mechanical, chemical, and biological device and sensors based on its outstanding properties. Single walled carbon nanotubes can be either semiconducting or metallic material depending on its structures. However, controlling the structure is quite challenging with current technologies. For the network formation of the singl...

2012
Shelby B. Hutchens Alan Needleman Julia R. Greer

Related Articles Distinguishing defect induced intermediate frequency modes from combination modes in the Raman spectrum of single walled carbon nanotubes J. Appl. Phys. 111, 064304 (2012) Effect of bending buckling of carbon nanotubes on thermal conductivity of carbon nanotube materials J. Appl. Phys. 111, 053501 (2012) Nanotorsional actuator using transition between flattened and tubular stat...

2013
Yabin Chen Ziyong Shen Ziwei Xu Yue Hu Haitao Xu Sheng Wang Xiaolei Guo Yanfeng Zhang Lianmao Peng Feng Ding Zhongfan Liu Jin Zhang

Aligned single-walled carbon nanotube arrays provide a great potential for the carbon-based nanodevices and circuit integration. Aligning single-walled carbon nanotubes with selected helicities and identifying their helical structures remain a daunting issue. The widely used gas-directed and surface-directed growth modes generally suffer the drawbacks of mixed and unknown helicities of the alig...

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
seyedeh parvin moussavi school of public health, international branch of shahid sadoughi university of medical sciences and health services, yazd, iran. mehran mohammadian fazli department of environmental health engineering. school of public health, zanjan university of medical sciences, zanjan, iran.

background; dyes can cause many problems in environment. therefore, removal of these contaminants before discharging wastewater to environment can reduce the environmental hazards. adsorption is one of the usual processes for decolorizing from wastewater. nanotubes are new adsorbents that can adsorb different compounds. this work aimed to investigate acid violet 17 dye removal by adsorption usi...

2010
Qiang Wu Wei Zhu Chuck Zhang Zhiyong Liang Ben Wang

Single-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT) membranes (buckypaper) and carbon nanofiber (CNF) paper were incorporated onto the surface of epoxy carbon fiber composites, as proposed fire shields. Their flammability behaviors were investigated by a cone calorimeter. SWCNT buckypaper and CNF paper did not show notable improvement on fire retardancy. However, MWCN...

2006
Pat Richard JR Macdonald

We have continued our efforts in the J. R. Macdonald Laboratory directed toward the study of electronic excitations and dynamics in carbon nanotubes excited by femtosecond pump-probe laser pulses generated by the ultra-fast Ti:Sapphire Kansas Light Source, KLS. We use time-of-flight of electrons emitted from carbon nanotubes to deduce the energy and temporal behavior of the electronic states of...

2015
Siddarud Bannikoppa Ajayakumar C. Katageri

This paper discuss about the critical review on design of carbon nanotube based MEMS piezoresistive pressure sensors, use of different types of carbon nanotubes such as multi-walled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWNTs) and vertically aligned carbon nanotubes (VANTs), sensing mechanism, applications, etc. The structural deformation of the piezoresistive nano structur...

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