Abstract Boron nitride nanotubes (BNNTs) are emerging nanomaterials with analogous structures and similarly impressive mechanical properties to carbon (CNTs), but unique chemistry complimentary multifunctional properties, including higher thermal stability, electrical insulation, optical transparency, neutron absorption capability, piezoelectricity. Over the past decade, advances in synthesis h...

Due to the unique electrical and mechanical properties of boron nitride nanotubes (BNNT), BNNT has been a promising material for many potential applications, especially in biomedical field. Understanding the dispersion of BNNT in aqueous solution by biomolecules is essential for its use in biomedical applications. In this study, BNNT wrapped by polynucleotides in aqueous solution was investigat...

Abstract Boron nitride nanotubes (BNNTs) will be one of the most important materials this century. Recent synthetic advances have made BNNTs viable candidates for advanced multifunctional materials. Like carbon and graphene, h-BN extraordinary physical properties. Unlike CNTs, a wideband gap; they are piezoelectric, neutron radiation shielding capability, can withstand degradation up to 1000 °C...

Direct measurement of local phonon dispersion in individual nanostructures can greatly advance our understanding their electrical, thermal, and mechanical properties. However, such experimental measurements require extremely high detection sensitivity combined spatial, energy momentum resolutions, thus has been elusive. Here, we develop a four-dimensional electron loss spectroscopy (4D-EELS) te...

In this research, the effects of HCN adsorption on the surface of the pristine, Ge, P, and GeP doped boron nitride nanotube (BNNTs) are investigated by using density function theory at the B3LYP/6–31G(d, p) level of theory. At the first step, we consider different configurations for adsorbing HCN molecule on the surface of BNNTs. The optimized models are used to calculate the structural, electr...

Tailoring the SiC fiber-matrix interface in micron-sized fibers is crucial to attaining enhanced mechanical properties ceramic reinforced composites. Herein, authors report growth of boron nitride nanotubes (BNNT) onto (SiCf), creating a fuzzy fiber architecture promote surface area for defined load path matrix and improve these structures. Successful BNNT-growth achieved by oxide chemical vapo...

The synthesis of rebar graphene on Cu substrates is described using functionalized boron nitride nanotubes (BNNTs) that were annealed or subjected to chemical vapor deposition (CVD) growth of graphene. Characterization shows that the BNNTs partially unzip and form a reinforcing bar (rebar) network within the graphene layer that enhances the mechanical strength through covalent bonds. The rebar ...

An effective solid-state reaction method is reported for synthesizing boron nitride nanotubes (BNNTs) in large scale and with high purity by annealing amorphous boron powder and ferric chloride (FeCl3) catalyst in ammonia atmosphere at elevated temperatures. FeCl3 that has rarely been utilized before is introduced not only as a catalyst but also as an efficient transforming agent which converts...

In situ heating transmission electron microscopy observations clearly reveal remarkable interlayer expansion and inner-layer inward contraction in multi-walled boron nitride nanotubes (BNNTs) as the specimen temperature increases. We interpreted the observed inward contraction as being due to the presence of the strong constraints of the outer layers on radial expansion in the tubular structure...

We have performed a near-edge x-ray absorption fine-structure (NEXAFS) investigation of multi-walled boron nitride nanotubes (BNNTs). We show that the one-dimensionality of BNNTs is clearly evident in the B K edge spectrum, while the N K edge spectrum is similar to that of layered hexagonal BN (h-BN). We observe a sharp feature at the σ* onset of the B K edge, which we ascribe to a core exciton...