نتایج جستجو برای: single walled carbon nano tubes

تعداد نتایج: 1201903  

2011
Jun Lu Gustav Berggren Sascha Ott Helena Grennberg

The author wishes to clarify his contribution to the papers I-VII in the thesis I Carried out all experimental work and contributed in writing the paper. II Significantly contributed to the experimental work and characterizations of the purified single-and multi walled carbon nano-tubes. Contributed in writing the paper. III Performed all experimental work except synthesizing the glyco-sides 3 ...

Journal: :Nanoscale 2013
Massimiliano Olivi Elena Zanni Giovanni De Bellis Claudio Talora Maria Sabrina Sarto Claudio Palleschi Emmanuel Flahaut Marc Monthioux Stefania Rapino Daniela Uccelletti Silvana Fiorito

In the last years carbon nanotubes have attracted increasing attention for their potential applications in the biomedical field as diagnostic and therapeutic nano tools. Here we investigate the antimicrobial activity of different fully characterized carbon nanotube types (single walled, double walled and multi walled) on representative pathogen species: Gram-positive Staphylococcus aureus, Gram...

حاج آقازاده, محمد, شاه طاهری, سید جمال الدین, صبور یراقی, علی اکبر, محمدیان, یوسف, کاکویی, حسین,

Background and aim: In this study the cytotoxicity to human epithelial lung cells of single-walled carbon nanotubes, multi-walled carbon nanotubes and chrysotile was compared based on the following cytotoxicity indices: no observable adverse effect concentration (NOAEC), inhibitory concentration 50 (IC50), and Total Lethal Concentration (TLC). Materials and Methods: Human epithelial lung cells...

Journal: :journal of physical & theoretical chemistry 2014
shahla hamedani hossein aghaie shahram moradi

in this work, the structural and electronic properties of folic acid molecule on functionalized (7,0)zigzag single-walled carbon nanotube was studied in gas phase on the basis of density functionaltheory (dft). furthermore, covalent interaction of folic acid with single-walled carbon nanotube wasinvestigated and its quantum molecular descriptors and binding energies were calculated. the dftb3ly...

2006
Haibin Su William A Goddard Yang Zhao

We investigate a new generation of fullerene nano-oscillators: a single-walled carbon nanotube with one buckyball inside with an operating frequency in the tens-of-gigahertz range. A quantitative characterization of energy dissipation channels in the peapod pair has been performed via molecular dynamics simulation. Edge effects are found to be the dominant cause of dynamic friction in the carbo...

Due to the importance effect of magnetic field on the history of long-term radial and circumfer-ential creep strain and radial displacement for a three-phase nano-composite exposed to an internal pressure and placed uniform temperature, the present article subject has been pro-posed. Three-phase nano-composite made of single-walled carbon nano tubes (SWCNTs)/ glass fiber (GF)/vinylester used to...

2015
Zhenan Bao Huiliang Wang Ghada Koleilat Nan Liu Myung Gil Kim

The different arrangements and combinations in which carbon can exist produce a wide variety of compounds that have unique physical, chemical and electrical properties. Some of these allotropes behave as conductors while others are classified as semiconducting. Our efforts focused on taking advantage of the carbon-based materials’ potential and optimally we employed them together to form an all...

Journal: :journal of ultrafine grained and nanostructured materials 2013
mahnaz zakeri mahdi shayanmehr

carbon nanotubes (cnts) are specific structures with valuable characteristics. in general, the structure of each nanotube is defined by a unique chiral vector. in this paper, different structures of short single-walled cnts are simulated and their mechanical properties are determined using finite element method. for this aim, a simple algorithm is presented which is able to model the geometry o...

2012
T. A. SEARLES

Submitted for the MAR08 Meeting of The American Physical Society Excitons in Single-Walled Carbon Nanotubes in Different Local Environments: Effects of Strain and Disorder on Magnetic Brightening1 T.A. SEARLES, ECE Dept, Rice University, D.J. HILTON, J. SHAVER, W.D. RICE, Rice Univ., Y.-D. JHO, GIST, Korea, S.A. MCGILL, NHMFL, J.A. FAGAN, E.K. HOBBIE, NIST, J. KONO, ECE Dept, Rice University — ...

2007
Frank J Owens

The structure of single walled armchair and zig-zag carbon nanotubes having 70 atoms and two carbons replaced by boron or nitrogen is obtained at minium energy using HF/6-31G* molecular orbital theory. The calculations show that the ground state of the zig-zag tubes is a triplet state while for the armchair tubes it is a singlet. In the zig-zag tubes the density of states at the Fermi level is ...

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