نتایج جستجو برای: boron nitrid nanotube

تعداد نتایج: 34349  

Journal: :Nanoscale 2013
Xiang-Zi Li Kong-Lin Wu Yin Ye Xian-Wen Wei

Highly ordered noncrystalline boron-doped nickel nanotube arrays are rapidly synthesized within 150 s by template-based electroless deposition. The as-prepared nanotubes have tunable magnetic properties and exhibit super efficient catalytic activity (∼70 s) for the reduction of 4-nitrophenol.

Background & Aims: The overall goal of utilizing nanotubes in drug delivery is to treat a disease effectively with minimum side effects and control the drug release rate. With common methods of taking the medication, such as orally and intravenously, the drug is distributed throughout the body, and the whole body is affected by the drug, and adverse side effects occur. With the development of n...

2010
T. A. Hilder R. Yang V. Ganesh D. Gordon A. Bliznyuk A. P. Rendell S.-H. Chung

Past molecular dynamics (MD) studies of boron nitride nanotubes (BNNTs) have used van der Waals parameters from generic force fields, combined with various values for the partial charges on the boron and nitrogen atoms. This study explores the validity of these parameters by first using quantum chemical packages Car-Parrinello molecular dynamics (CPMD) and Gaussian to compute partial charges fo...

In this study interaction of phenothiazine sulfur dye with (5, 5) armchair open-end boron nitride nanotubes (BNNTs) in interaction (with a length of 7 Å) was investigated. The impacts of the estereoelectronic effect associated with donor-acceptor electron delocalizations, dipole-dipole interactions and total steric exchange energies on the structural and electronic properties and reactivity of ...

2014
Fernando Gomes Victor Dmitriev Clerisson Nascimento

The pristine boron nitride nanotubes have a large direct band gap around 5 eV. This band gap can be engineered by doping. We investigate electronic structure of the doped hexagonal boron nitride (5,5) nanotubes using the linearized augmented cylindrical wave method. In particular, this work focuses on systematical study of the band gap and the density of states around the Fermi-level when the n...

2005
L. Brizhik A. Eremko B. Piette M. Watson W. Zakrzewski

We study numerically self-trapped (polaron) states of quasiparticles (electrons, holes or excitons) in a deformable nanotube formed by a hexagonal lattice, wrapped into a cylinder (carbon-and boron nitride-type nanotube structures). We present a Hamiltonian for such a system taking into account an electron-phonon interaction, and determine conditions under which the lowest energy states are pol...

Journal: :Progress in Natural Science: Materials International 2013

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