نتایج جستجو برای: single walled boron nitride nanotubes

تعداد نتایج: 923923  

M. Mahmudian-Najafabadi M. Mohammadimehr,

In this article, the bending and free vibration analysis of functionally graded (FG) nanocomposites Timoshenko beam model reinforced by single-walled boron nitride nanotube (SWBNNT) using micro-mechanical approach embedded in an elastic medium is studied. The modified coupled stress (MCST) and nonlocal elasticity theories are developed to take into account the size-dependent effect. The mechani...

اکبری‌آدرگانی, بهروز, تقوی, محمود, ززولی, محمد علی, یزدانی چراتی, جمشید, یوسفی, ذبیح ا... ,

Background and purpose: Cadmium is a very toxic metal that have adverse effects on human health and aquatic environments even at low concentrations, therefore, efforts should be made to eliminate this metal from aquatic ecosystem. The aim of this study was to investigate the efficacy of L-cysteine functionalized single-walled carbon nanotubes in removing cadmium from aqueous environments. This ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
Ludmila B Boinovich Alexandre M Emelyanenko Andrei S Pashinin Chee Huei Lee Jaroslaw Drelich Yoke Khin Yap

Superhydrophobic surfaces are attractive as self-cleaning protective coatings in harsh environments with extreme temperatures and pH levels. Hexagonal phase boron nitride (h-BN) films are promising protective coatings due to their extraordinary chemical and thermal stability. However, their high surface energy makes them hydrophilic and thus not applicable as water repelling coatings. Our recen...

Journal: :Nanotechnology 2011
Hessam M Ghassemi Chee H Lee Yoke K Yap Reza S Yassar

The recent observation of high flexibility in buckled boron nitride nanotubes (BNNTs) contradicts the pre-existing belief about BN nanotube brittleness due to the partially ionic character of bonding between the B and N atoms. However, the underlying mechanisms and relationships within the nanotube remained unexplored. This study reports for the first time the buckling mechanism in multi-walled...

Journal: :Nanotechnology 2016
Colin Preston Da Song Josh Taillon John Cumings Liangbing Hu

Few-walled carbon nanotubes offer a unique marriage of graphitic quality and robustness to ink-processing; however, doping procedures that may alter the band structure of these few-walled nanotubes are still lacking. This report introduces a novel solution-injected chemical vapor deposition growth process to fabricate the first boron-doped few-walled carbon nanotubes (B-FWNTs) reported in liter...

2004
C. H. Wong K. M. Liew X. Q. He M. J. Tan S. A. Meguid

Molecular dynamics simulation is performed on the buckling behavior of single and multi-walled carbon nanotubes under axial compression. Brenner’s ‘second generation’ empirical potential is used to describe the many-body short range interatomic interactions for singlewalled carbon nanotubes, while the Lennard Jones 12-6 model for van der Waals potential is added for multi-walled carbon nanotube...

2016
D. Baowan James M. Hill

In this letter we extend previously established results for nested carbon nanocones to both nested boron nitride and carbon-boron nitride nanocones. Based purely on mechanical principles and classical mathematical modelling techniques, we determine the energetically favourable structures for nested boron nitride and carbon-boron nitride nanocones. While only three apex angles for boron nitride ...

Journal: :Physical review letters 2001
E Bengu L D Marks

We describe in situ synthesis and characterization of single-walled BN nanotubes terminated by fullerenelike structures using electron-cyclotron resonance nitrogen and electron beam boron sources onto polycrystalline tungsten substrates. Detailed comparisons of experimental high-resolution electron microscopy images and simulations based upon molecular models show a dominance of kinks and bends...

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