نتایج جستجو برای: carbon nanotubes cnt

تعداد نتایج: 288474  

2017
Dongqing Ding Yang Zhao Shuhong Dong Peishi Yu Liqiang Wang Junhua Zhao

An explicit solution for the vibration of a carbon chain inside carbon nanotubes (CNTs) was obtained using continuum modeling of the van der Waals (vdW) interactions between them. The effect of the initial tensile force and the amplitude of the carbon chain as well as the radii of the CNTs on the vibration frequency were analyzed in detail, respectively. Our analytical results show that the vib...

Journal: Journal of Nanoanalysis 2014
Devbrat Pundhir Sadhana Tyagi Saral Kumar Gupta Vibhuti Yadav

Nanostructured hematite thin films are doped with zirconium successfully and also modified by introducing CNT using sol-gel method for their implementation as photo-electrode in photo-electrochemical (PEC) cell for hydrogen generation. XRD, UV-visible spectroscopy and PEC study techniques are used to characterize the thin films. The PEC responses of thin films are improved by introducing carbon...

Journal: :iranian journal of science and technology (sciences) 2015
m. saeidi

in this paper, a new model based on kinetic theory of gases and longitude oscillations of metallic nanocluster on single carbon nanotube (cnt) in addition to phononvibrations of cnt on substrate is presented to describe the growth mechanism of ultra-long cnt in chemical vapor deposition (cvd).interaction between cnt and catalyst is investigated by lennard-jones potential. simulations demonstrat...

2014
Christoph Nick Sandeep Yadav Ravi Joshi Christiane Thielemann Jörg J Schneider

The growth of cortical neurons on three dimensional structures of spatially defined (structured) randomly oriented, as well as on vertically aligned, carbon nanotubes (CNT) is studied. Cortical neurons are attracted towards both types of CNT nano-architectures. For both, neurons form clusters in close vicinity to the CNT structures whereupon the randomly oriented CNTs are more closely colonised...

Journal: :Scientific reports 2016
Zhaohe Dai Luqi Liu Xiaoying Qi Jun Kuang Yueguang Wei Hongwei Zhu Zhong Zhang

Efficient assembly of carbon nanotube (CNT) based cellular solids with appropriate structure is the key to fully realize the potential of individual nanotubes in macroscopic architecture. In this work, the macroscopic CNT sponge consisting of randomly interconnected individual carbon nanotubes was grown by CVD, exhibiting a combination of super-elasticity, high strength to weight ratio, fatigue...

Journal: :Analytical chemistry 2010
Chaudhery Mustansar Hussain Chutarat Saridara Somenath Mitra

The synthesis of the gas chromatography stationary phase by molecular self-assembly of carbon nanotubes (CNTs) via a novel ethanol chemical vapor deposition process is presented. A major advantage is that ethanol was found to be an excellent carbon source that generated highly pure multiwalled carbon nanotubes with very little nontubular carbon impurities. The nanotubes were not vertically alig...

Journal: :Mechanics & chemistry of biosystems : MCB 2004
Daxiang Cui Cengiz S Ozkan Sathyajith Ravindran Yong Kong Huajian Gao

Experiments on encapsulating Pt-labelled DNA molecules inside multiwalled carbon nanotubes (MWCNT) were performed under temperature and pressure conditions of 400K and 3 Bar. The DNA-CNT hybrids were purified via agarose gel electrophoresis and analyzed via high resolution transmission electron microscopy (HR-TEM) and energy dispersive X-ray spectroscopy (EDX). The results showed that the Pt-la...

2005
Junya Suehiro Guangbin Zhou Hiroshi Imakiire Weidong Ding Masanori Hara

The authors have previously demonstrated an electrokinetic fabrication method of a carbon nanotube (CNT) gas sensor using dielectrophoresis. One advantage of the technique was that one could quantify the amount of trapped nanotubes on a real time basis by monitoring electrical impedance of the sensor (dielectrophoretic impedance measurement, DEPIM). In the present study, we extended the DEPIM t...

2012
Ramona Gerwig Kai Fuchsberger Birgit Schroeppel Gordon Steve Link Gerhard Heusel Udo Kraushaar Wolfgang Schuhmann Alfred Stett Martin Stelzle

Composites of carbon nanotubes and poly(3,4-ethylenedioxythiophene, PEDOT) and layers of PEDOT are deposited onto microelectrodes by electropolymerization of ethylenedioxythiophene in the presence of a suspension of carbon nanotubes and polystyrene sulfonate. Analysis by FIB and SEM demonstrates that CNT-PEDOT composites exhibit a porous morphology whereas PEDOT layers are more compact. Accordi...

2013
Kazuo Umemura Tomohiro Hirata Takuya Hayashida Daisuke Nii

Continuous cross-sectional analysis of atomic force microscope (AFM) images of several types of hybrids of DNA and carbon nanotubes (CNT) has been demonstrated. When conventional cross-sectional analysis was employed, the difference in surface roughness between chemical vapor deposition (CVD)-produced single-walled nanotubes (SWNTs) and high-pressure carbon monoxide (HiPco)produced SWNT could n...

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