نتایج جستجو برای: boron nitride nanoribbons
تعداد نتایج: 31179 فیلتر نتایج به سال:
Infrared ellipsometry on hexagonal and cubic boron nitride thin films" (1997).
Cutting and folding 2D systems is one of the explored paths to tune physical chemical properties in one-atom-thick matter. Contrary graphene, boron nitride (BN) nanoribbons are difficult obtain, folded BN nanoribbon structures have not been reported yet. Here, we show that pressure application multiwalled nanotubes leads different types tube internal organizations including formation folds. The...
electrical sensitivity of a boron nitride nanotube (bnnt) was examined toward aniline (c6h5nh2) molecule by using density functional theory (dft) calculations at the b3lyp/6-31g (d) level, and it was found that the adsorption energy (ead) of aniline on the pristine nanotubes is a bout -19.03kcal/mol. but when nanotube has been doped with si and al atomes, the adsorption energy of aniline molecu...
the electronic and structural properties of pristine and carbon doped (c-doped) boron nitride nano-ribbons(bnnrs) have been studied employing density functional theory (dft) calculations. total energies, gapenergies, dipole moments, and quadrupole coupling constants (qcc) have been calculated in the optimizedstructures of the investigated bnnrs. the results indicated that the stability and gap ...
A unique, all-ceramic material capable of nonbrittle fracture via crack deflection and delamination has been mechanically characterized from 25° through 1400°C. This material, fibrous monoliths, was comprised of unidirectionally aligned 250 mm diameter silicon nitride cells surrounded by 10 to 20 mm thick boron nitride cell boundaries. The average flexure strengths of fibrous monoliths were 510...
Past molecular dynamics studies of boron-nitride nanotubes 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 paper explores the validity of these parameters by first using quantum chemical packages CPMD and Gaussian to compute partial charges for isolated and periodic boron nitride nanotubes, ...
The presence of capping materials during annealing (activation for example) can substantially impact the silicon junction profiles of Complementary Metal Oxide Semiconductor Field Effect Transistors (CMOSFET), depending on the nature of these layers. In this paper we specifically investigated the boron out-diffusion from a silicon junction into the silicon oxide in presence of a silicon oxide/s...
Abstract Integration of graphene and hexagonal boron nitride (hBN) in lateral heterostructures has provided a route to broadly engineer the material properties by quantum confinement electrons or introduction novel electronic magnetic states at interface. In this work we demonstrate heteroepitaxial growth nanoribbons (GNRs) passivated hBN using high-temperature molecular beam epitaxy (HT-MBE) g...
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