نتایج جستجو برای: boron nitride nanoribbons
تعداد نتایج: 31179 فیلتر نتایج به سال:
Carbon nanotubes, carbon nanocones, and graphene nanoribbons are carbon-based nanomaterials, and their electronic and field emission properties can be altered by either electron donors or electron acceptors. Among both donors and accepters, nitrogen and boron atoms are typical substitutional dopants for carbon materials. The contribution of this paper mainly provides a comprehensive overview of...
an efficient method for purification of yard-glass shaped boron nitride nanotubes (yg-bnnts) fabricated via a chemical vapour reaction (cvr) route has been developed. impurities including carbon, boron nitride (bn), and fe species in the pristine yg-bnnt sample are removed by a combined physical and chemical procedure which involves ultrasonication, high temperature oxidation, hot-water washing...
Abstract The generation of high-order harmonics in finite, hexagonal nanoribbons is simulated. Ribbons with armchair and zig-zag edges are investigated by using a tight-binding approach only nearest-neighbor hopping. By turning an alternating on-site potential off or on, the system describes for example graphene boron nitride, respectively. incoming laser pulse linearly polarized along ribbons....
Robust evaluation of potential environmental and health risks of carbonaceous and boron nitride nanomaterials (NMs) is imperative. However, significant agglomeration of pristine carbonaceous and boron nitride NMs due to strong van der Waals forces renders them not suitable for direct toxicity testing in aqueous media. Here, the natural polysaccharide alginic acid (AA) was used as a nontoxic, en...
The composition and properties of boron nitride coatings are described. They can be used to coat and protect metallic and ceramic components used at elevated temperatures. For this purpose, the properties of boron nitride as well as the demands placed on starting materials in the production of such coatings are discussed. Additionally, examples for their practical application are given. Interce...
Submitted for the MAR07 Meeting of The American Physical Society Boron doped graphene nanoribbons THIAGO MARTINS, Instituto de Fisica Universidade de Sao Paulo, HIROKI MIWA, Instituto de Fisica, Universidade Federal de Uberlandia, ANTONIO J.R. DA SILVA, A. FAZZIO, Instituto de Fisica Universidade de Sao Paulo — We will present a detailed study of the electronic, magnetic and transport propertie...
To achieve the high-rate efficiency in a electrochemical energy storage technologies, it is vital for battery anode to be electronically as well ionically conductive. Such requirement has boosted survey of three-dimensional (3D) porous networks made up light-weight non-metallic elements, like carbon, boron, and nitride. A wide range 3D materials composed carbon and/or boron Li/Na-ion batteries ...
Defects play a key role in determining the properties and technological applications of nanoscale materials and, because they tend to be highly localized, characterizing them at the single-defect level is of particular importance. Scanning tunnelling microscopy has long been used to image the electronic structure of individual point defects in conductors, semiconductors and ultrathin films, but...
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