نتایج جستجو برای: multi wall

تعداد نتایج: 629447  

2007
Shaoxin Lu Balaji Panchapakesan

Recent studies have investigated the photomechanical properties of carbon nanotubes which can be utilized to construct optical actuators. In this paper we compare the photomechanical response from single-wall and multi-wall carbon nanotube/polymer systems in multilayer and nanocomposite actuator constructions. Incorporating polymers in the actuators, single-wall and multi-wall nanotubes show si...

The present paper focuses on numerical study for an inclined magneto-hydrodynamic effect on free convection flow of a tangent hyperbolic nanofluid embedded with Carbon nanotubes (CNTs) over a stretching surface taking velocity and thermal slip into account. Two types of nanoparticles are considered for the study; they are single and multi-walled nanotubes. The presentation of single-parameter g...

2002
Jeffery A. White

The wall-matching methodology of Wilcox is modified to include a solid-wall, thermal-conduction model. This coupled fluid-thermal-structure model is derived assuming that the wall thermal-structure behavior is locally one-dimensional and that structural deformations, due to thermally induced stresses, are not significant. The one-dimensional coupled fluid-thermal-structure model is derived such...

2003
DAVID TOMÁNEK

A combination of ab initio Density Functional and parametrized Linear Combination of Atomic Orbitals calculations is used to describe the interplay between structural and electronic properties of single-wall, multi-wall, and bundled carbon nanotubes. The electronic structure of cylindrical single-and multi-wall tubes with an extremely inhomogeneous charge density is determined self-consistently...

Journal: :the journal of tehran university heart center 0
yaser jenab tehran heart center, tehran university of medical sciences, tehran, iran. marzieh pakbaz tehran heart center, tehran university of medical sciences, tehran, iran. neda ghaffari-marandi tehran heart center, tehran university of medical sciences, tehran, iran.

t akotsubo cardiomyopathy (tcm), also known as stress-induced cardiomyopathy, is a clinical syndrome of transient left ventricular (lv) apical wall motion abnormality with relative preservation of the basal heart segments in the absence of any significant atherosclerosis. recurrence of this condition is rare. we report a postmenopausal woman, who experienced two episodes of tcm within 4 months ...

Journal: :journal of computational applied mechanics 0
shahab azimi department of mechanical engineering, university of tehran, tehran, iran nano technology research center, research institute of petroleum industry, tehran, iran abbas rastgoo department of mechanical engineering, university of tehran, tehran, iran sorena sattari vice-presidency for science and technology, tehran, iran nano technology research center, research institute of petroleum industry, tehran, iran alimorad rashidi nano technology research center, research institute of petroleum industry, tehran, iran received: 9

nano fillers are part of new studies to enhance various properties of fluids and solids. for example, adding nanoparticles as an enforcement in nanocomposites or as an additive to improve thermal or electrical properties in nano-fluids are of extreme importance in science and industry. there are numerous methods to uniformly disperse nanoparticles in fluid and solid phase. one of the well-used ...

In this paper, a simple and reproducible approach for attaching the multi-wall carbon nanotubes (MWNTs) to the apex of the atomic force microscope probe has been proposed. For this purpose, the dielectrophoresis method was applied due to its simple performance, cheapness and reliability. In this method, various parameters such as voltage, frequency, concentration of carbon nanotubes solution an...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2010

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