نتایج جستجو برای: bnnts

تعداد نتایج: 161  

2017
Tiago H. Ferreira Marcelo C. Miranda Zildete Rocha Alexandre S. Leal Dawidson A. Gomes Edesia M. B. Sousa

Currently, nanostructured compounds have been standing out for their optical, mechanical, and chemical features and for the possibilities of manipulation and regulation of complex biological processes. One of these compounds is boron nitride nanotubes (BNNTs), which are a nanostructured material analog to carbon nanotubes, but formed of nitrogen and boron atoms. BNNTs present high thermal stabi...

Journal: :Nanoscale 2013
Yang Huang Jing Lin Jin Zou Ming-Sheng Wang Konstantin Faerstein Chengchun Tang Yoshio Bando Dmitri Golberg

Bending manipulation and direct force measurements of ultrathin boron nitride nanotubes (BNNTs) were performed inside a transmission electron microscope. Our results demonstrate an obvious transition in mechanics of BNNTs when the external diameters of nanotubes are in the range of 10 nm or less. During in situ transmission electron microscopy bending tests, characteristic "hollow" ripple-like ...

2010
G Ciofani L Ricotti S Danti S Moscato C Nesti D D’Alessandro D Dinucci F Chiellini A Pietrabissa M Petrini A Menciassi

Boron nitride nanotubes (BNNTs) have generated considerable interest within the scientific community by virtue of their unique physical properties, which can be exploited in the biomedical field. In the present in vitro study, we investigated the interactions of poly-l-lysine-coated BNNTs with C2C12 cells, as a model of muscle cells, in terms of cytocompatibility and BNNT internalization. The l...

2015
Zhoufei Wang Haiying He William Slough Ravindra Pandey Shashi P. Karna

Interactions of DNA oligomers with two categories of semiconducting nanostructureschalcogenide quantum dots (QDs) and boron nitride nanotubes (BNNTs)owing to their widespread presence in bioinspired processes are investigated using the first-principles density functional theory and continuum solvent model. The chalcogenide QDs interact strongly at their metal centers featuring electrostatic i...

2010
Hessam M. Ghassemi Chee H. Lee Yoke K. Yap Reza S. Yassar

The size of electronic devices becomes smaller and smaller and the utilized components and materials are subjected to complex environments including high temperatures, electrical current, mechanical stresses, and others. We need to evaluate the performance of these small-scale materials that are used in such devices. We have shown that these small-scale materials may suffer structural degradati...

2012
Rita Kakkar

Single-walled boron nitride nanotubes are chosen as model reactants, and (10,0) and (6,6) are chosen as representatives of armchair and zigzag nanotubes, respectively, to study the interaction of carbenes of the type :CX2. It is found that, contrary to the case of carbon nanotubes, boron nitride tubes, particularly armchair BNNTs, do not show a propensity for cyclopropane ring formation. The SW...

Journal: :Journal of materials informatics 2022

Understanding the coupling between one-dimensional (1D) materials and their protective is essential for developing nanodevices. Herein, we investigate effect of size, chirality, type nanotubes [such as carbon/boron nitride (CNTs/BNNTs)] on atomic electronic structures confined Te chains using density functional theory. We find that optimal configurations in CNTs/BNNTs depend strongly size but w...

Journal: :Science 2003
W Mickelson S Aloni Wei-Qiang Han John Cumings A Zettl

We have created insulated C60 nanowire by packing C60 molecules into the interior of insulating boron nitride nanotubes (BNNTs). For small-diameter BNNTs, the wire consists of a linear chain of C60 molecules.With increasing BNNT inner diameter, unusual C60 stacking configurations are obtained (including helical, hollow core, and incommensurate) that are unknown for bulk or thin-film forms of C6...

Journal: :Journal of the American Chemical Society 2008
Wenlong Wang Yoshio Bando Chunyi Zhi Wangyang Fu Enge Wang Dmitri Golberg

Noncovalent functionalization of boron nitride nanotubes (BNNTs) in aqueous solution was achieved by means of pi-stacking of an anionic perylene derivative, through which carboxylate-functionalized BNNTs were prepared for the first time. Starting from the functionalized nanotubes, an innovative methodology was designed and demonstrated for the controlled near-surface carbon doping of BNNTs. As ...

2010
Chunyi Y. Zhi Yoshio Bando Takeshi Terao Chengchun Tang Dmitri Golberg

We report the fabrication of and investigations into the dielectric and thermal properties of epoxy/boron nitride nanotube (BNNT) composites. It was found that BNNT fillers can effectively adjust the dielectric constant of epoxy. Moreover, the thermal conductivity of epoxy was improved by up to 69 % with 5 wt % BNNTs. Our studies indicate that BNNTs are promising nanofillers for polymers, to ob...

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