نتایج جستجو برای: boron nitride nanotube

تعداد نتایج: 44831  

Journal: :The Journal of chemical physics 2006
Xiaojun Wu J L Yang X C Zeng

Adsorption of hydrogen molecules on platinum-doped single-walled zigzag (8,0) boron nitride (BN) nanotube is investigated using the density-functional theory. The Pt atom tends to occupy the axial bridge site of the BN tube with the highest binding energy of -0.91 eV. Upon Pt doping, several occupied and unoccupied impurity states are induced, which reduces the band gap of the pristine BN nanot...

Journal: :Nano letters 2014
Jonathan Garel Chong Zhao Ronit Popovitz-Biro Dmitri Golberg Wenlong Wang Ernesto Joselevich

Owing to their mechanically tunable electronic properties, carbon nanotubes (CNTs) have been widely studied as potential components for nanoelectromechanical systems (NEMS); however, the mechanical properties of multiwall CNTs are often limited by the weak shear interactions between the graphitic layers. Boron nitride nanotubes (BNNTs) exhibit a strong interlayer mechanical coupling, but their ...

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Effect of CaCO3 on carbothermic formation of hexagonal boron nitride (h-BN) was investigated. B2O3–C mixtures containing CaCO3 additive were reacted at 1500   for 120 min in nitrogen atmosphere. Formed phases in the reaction products were determined by powder-XRD analyses, and amounts of the constituents were determined by chemical analyses. Particle size and morphology of the formed h-BN powde...

Journal: :Chemical communications 2014
Runqing Li Jingquan Liu Luhua Li Hongbin Wang Ziqing Weng Simon K H Lam Aijun Du Ying Chen Colin J Barrow Wenrong Yang

Boron nitride nanotubes were functionalized with microperoxidase-11 in aqueous media, showing improved catalytic performance due to a strong electron coupling between the active centre of microperoxidase-11 and boron nitride nanotubes.

Electrical sensitivity of a Boron Nitride Nano Tube (BNNT) was examined toward hydroquinone (C6H4(OH)2), cyanogens (C2N2), methylacetylene (C3H4), ethylacetylene (C4H6), aniline (C6H5NH2), ethanol (C2H5OH), pyrrole (C4H...

Journal: :ACS nano 2013
Gang Hee Han Julio A Rodríguez-Manzo Chan-Woo Lee Nicholas J Kybert Mitchell B Lerner Zhengqing John Qi Eric N Dattoli Andrew M Rappe Marija Drndic A T Charlie Johnson

Graphene-boron nitride monolayer heterostructures contain adjacent electrically active and insulating regions in a continuous, single-atom thick layer. To date structures were grown at low pressure, resulting in irregular shapes and edge direction, so studies of the graphene-boron nitride interface were restricted to the microscopy of nanodomains. Here we report templated growth of single cryst...

Journal: :ACS applied materials & interfaces 2016
Ri-Chao Zhang Dan Sun Ai Lu Sadegh Askari Manuel Macias-Montero Paul Joseph Dorian Dixon Kostya Ostrikov Paul Maguire Davide Mariotti

This Research Article reports on the enhancement of the thermal transport properties of nanocomposite materials containing hexagonal boron nitride in poly(vinyl alcohol) through room-temperature atmospheric pressure direct-current microplasma processing. Results show that the microplasma treatment leads to exfoliation of the hexagonal boron nitride in isopropyl alcohol, reducing the number of s...

2007
Takashi Koretsune Susumu Saito

Since the discovery of the superconductivity in boron-doped diamond [1], the carrier doping, especially boron doping in carbon materials attracts much attentions. For the carbon nanotube, however, the effect of boron doping as well as the possibility of the superconductivity [2] have not been well understood yet. Thus, we systematically study the boron-doped single-walled zigzag carbon nanotube...

ژورنال: سنجش و ایمنی پرتو 2018

The neutron collision cross-section is important in neutron use for a specific job, such as neutron therapy or even in nuclear reactors. In calculating computational codes such as MCNP, only information from the neutron-to-mass collision information contained in the computational code library is used, in the case of nanoscale particles in contrast to the mass of materials and / or particulate m...

Journal: :ACS Nano 2021

The synthesis of one-dimensional van der Waals heterostructures was realized recently, which opens up new possibilities for prospective applications in electronics and optoelectronics. even reduced dimension will enable novel properties further miniaturization beyond the capabilities its two-dimensional counterparts have revealed. natural doping results p-type electrical characteristics semicon...

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