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显示 1-30 共 47 条结果 关于 "255475" 范围 论文
Dmitri Golberg et al.
ACS nano, 4(6), 2979-2993 (2010-05-14)
Hexagonal boron nitride (h-BN) is a layered material with a graphite-like structure in which planar networks of BN hexagons are regularly stacked. As the structural analogue of a carbon nanotube (CNT), a BN nanotube (BNNT) was first predicted in 1994;
High temperature Boron-based thermoelectric materials
Mori T
Material Matters, 4, 37-37 (2009)
Riccardo Messina et al.
Scientific reports, 3, 1383-1383 (2013-03-12)
Thermophotovoltaic devices are energy-conversion systems generating an electric current from the thermal photons radiated by a hot body. While their efficiency is limited in far field by the Schockley-Queisser limit, in near field the heat flux transferred to a photovoltaic
Huijie Zhang et al.
Nanoscale, 4(20), 6343-6350 (2012-09-04)
CpG oligonucleotides (CpG ODNs) interact with Toll-like receptor 9 (TLR9), which results in the induction of immunostimulatory cytokines. We delivered CpG ODNs intracellularly using boron nitride nanospheres (BNNS). To enhance the loading capacity of CpG ODNs on BNNS, we used
Y Mizuguchi et al.
Physical chemistry chemical physics : PCCP, 17(34), 22090-22096 (2015-08-04)
We have studied the effect of RE substitution on the structure and the local atomic disorder in REO0.5F0.5BiS2 (RE = rare-earth) to understand their correlation with the bulk superconductivity in these materials. The mean RE size, affecting the chemical pressure
Min Gao et al.
The Journal of chemical physics, 138(3), 034701-034701 (2013-01-25)
The mechanism of CO oxidation by O(2) on Au atoms supported on the pristine and defected hexagonal boron nitride (h-BN) surface has been studied theoretically using density functional theory. It is found that O(2) binds stronger than CO on an
A solid-state process for formation of boron nitride nanotubes
Chen Y, et al.
Applied Physics Letters, 74(20) (1999)
Vasile Caciuc et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(42), 424214-424214 (2012-10-04)
We have performed a systematic semi-empirical and ab initio van der Waals study to investigate the bonding mechanism of benzene (C(6)H(6)), triazine (C(3)N(3)H(3)) and borazine (B(3)N(3)H(6)) adsorbed on graphene and a single boron nitride (BN) sheet. The two semi-empirical approaches
Masoud Darvish Ganji et al.
Journal of molecular modeling, 19(3), 1259-1265 (2012-11-28)
We have investigated the adsorption properties of acetone on zigzag single-walled BNNTs using density functional theory (DFT) calculations. The results obtained show that acetone is strongly bound to the outer surface of a (5,0) BNNT on the top site directly
Michele Furlotti et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(21), 7662-7667 (2015-04-16)
Boron nitride contains six-ring layers, which are isostructural to graphene, and it exhibits similar extraordinary mechanical strength. Unlike graphene, hexagonal boron nitride (h-BN) is an insulator and has some polar features that make it a perfect material for those applications
Andrew Harvey et al.
Nature communications, 9(1), 4553-4553 (2018-11-06)
Extinction spectra of nanomaterial suspensions can be dominated by light scattering, hampering quantitative spectral analysis. No simple models exist for the wavelength-dependence of the scattering coefficients in suspensions of arbitrary-sized, high-aspect-ratio nanoparticles. Here, suspensions of BN, talc, GaS, Ni(OH)2, Mg(OH)2
Claudia Backes et al.
ACS nano, 13(6), 7050-7061 (2019-06-15)
Liquid phase exfoliation is a commonly used method to produce 2D nanosheets from a range of layered crystals. However, such nanosheets display broad size and thickness distributions and correlations between area and thickness, issues that limit nanosheet application potential. To
Xun Gong et al.
Small (Weinheim an der Bergstrasse, Germany), 15(37), e1901468-e1901468 (2019-07-25)
Colloidal dispersions of nanomaterials are often polydisperse in size, significantly complicating their characterization. This is particularly true for materials early in their historical development due to synthetic control, dispersion efficiency, and instability during storage. Because a wide range of system
Haiqing Wan et al.
The Journal of chemical physics, 138(3), 034705-034705 (2013-01-25)
A Z-shaped junction constructed by a few-nanometer-long armchair-edged boron nitride nanoribbon (ABNNR) sandwiched between two semi-infinite zigzag-edged BNNR electrodes with different hydrogen-passivated edge treatment is proposed, and its spin-dependent electronic transport is studied by ab initio calculations. It is found
Gabriella Graziano et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(42), 424216-424216 (2012-10-04)
The accurate description of van der Waals forces within density functional theory is currently one of the most active areas of research in computational physics and chemistry. Here we report results on the structural and energetic properties of graphite and
Augustinus Stijn M Goossens et al.
Nano letters, 12(9), 4656-4660 (2012-08-22)
We report on the fabrication and measurement of nanoscale devices that permit electrostatic confinement in bilayer graphene on a substrate. The graphene bilayer is sandwiched between hexagonal boron nitride bottom and top gate dielectrics. Top gates are patterned such that
A Erba et al.
The Journal of chemical physics, 138(5), 054906-054906 (2013-02-15)
The vibration spectrum of single-walled zigzag boron nitride (BN) nanotubes is simulated with an ab initio periodic quantum chemical method. The trend towards the hexagonal monolayer (h-BN) in the limit of large tube radius R is explored for a variety
Vibro-fluidization of fine boron nitride powder at low pressure Jeffrey R. Wank, et al., Powder technology
Wank JR, et al.
Powder Technology, 121, 195-204 (2001)
Paul-Steffen Kuhn et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(39), 13703-13713 (2015-08-12)
A series of heteropentanuclear oxalate-bridged Ru(NO)-Ln (4d-4f) metal complexes of the general formula (nBu4N)5[Ln{RuCl3(μ-ox)(NO)}4], where Ln=Y (2), Gd (3), Tb (4), Dy (5) and ox=oxalate anion, were obtained by treatment of (nBu4N)2[RuCl3(ox)(NO)] (1) with the respective lanthanide salt in 4:1
Lei Wang et al.
ACS nano, 6(10), 9314-9319 (2012-09-27)
Using Raman spectroscopy, we study the environmental sensitivity of mechanically exfoliated and electrically floating single-layer graphene transferred onto a hexagonal boron nitride (h-BN) substrate, in comparison with graphene deposited on a SiO(2) substrate. In order to understand and isolate the
Ki Kang Kim et al.
ACS nano, 6(10), 8583-8590 (2012-09-14)
Hexagonal boron nitride (h-BN) is a promising material as a dielectric layer or substrate for two-dimensional electronic devices. In this work, we report the synthesis of large-area h-BN film using atmospheric pressure chemical vapor deposition on a copper foil, followed
Mark P Levendorf et al.
Nature, 488(7413), 627-632 (2012-08-31)
Precise spatial control over the electrical properties of thin films is the key capability enabling the production of modern integrated circuitry. Although recent advances in chemical vapour deposition methods have enabled the large-scale production of both intrinsic and doped graphene
Boron carbide and nitride as reactants for in situ synthesis of boride-containing ceramic composites
Zhanga GJ, et al.
J. Eur. Ceram. Soc., 24, 171-178 (2004)
Zhengqing John Qi et al.
Small (Weinheim an der Bergstrasse, Germany), 11(12), 1402-1408 (2014-11-05)
CVD graphene devices on stacked CVD hexagonal boron nitride (hBN) are demonstrated using a novel low-contamination transfer method, and their electrical performance is systematically compared to devices on SiO(2). An order of magnitude improvement in mobility, sheet resistivity, current density
Liancheng Wang et al.
Journal of nanoscience and nanotechnology, 13(7), 4634-4638 (2013-08-02)
In this study, cube-like LaB6 was synthesized by Mg coreduction of LaCl3 and B20,3. Then, boron nitride nanoboxes (BNNBs) were produced by nitriding cube-like LaB6, and the latter is not only played as boron source, but also as hard template.
Sibel Duman et al.
Journal of nanoscience and nanotechnology, 13(7), 4954-4961 (2013-08-02)
B-N polymer embedded iron(0) nanoparticles (NPs) were in-situ generated from the reduction of iron(III) acetylacetonate during the dehydrogenation of ammonia borane (AB) in THF solution at 40.0 +/- 0.5 degrees C. The iron(0) NPs could be isolated as powder from
Fengxian Ma et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 25(6), 065402-065402 (2013-01-22)
We provide a systematic analytical method for preferable orientation calculations of spherical fullerenes in single-walled boron nitride nanotubes. Based on the reaction energy calculations, both the minimum entering radii and the energetically favorable radii for encapsulating C(60), C(80) and C(180)
Jiesheng Wang et al.
Nanoscale, 2(10), 2028-2034 (2010-09-16)
This article provides a concise review of the recent research advancements in boron nitride nanotubes (BNNTs) with a comprehensive list of references. As the motivation of the field, we first summarize some of the attractive properties and potential applications of
Shaobin Tang et al.
Physical chemistry chemical physics : PCCP, 15(14), 5067-5077 (2013-03-02)
First-principles calculations have been used to investigate the structural and electronic properties of graphene supported on functionalized hexagonal boron nitride (h-BN) with hydrogen and fluorine atoms. Our results show that the hydrogenation and fluorination of the h-BN substrate modify the
A very high thermal conductivity obtained by boron nitride filled polybenzoxazine
Ishida H and Rimdusit S
Thermochimica Acta, 320, 177-186 (1998)
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