Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The evolution of thermal conductivity and heat capacity for the series of ${[{\text{PbMg}}_{1/3}{\text{Nb}}_{2/3}{\text{O}}_{3}]}_{1\ensuremath{-}x}{[{\text{PbTiO}}_{3}]}_{x}$ $(\text{PMN-}{\text{PT}}_{x})$ single crystals with $0\ensuremath{\le}x\ensuremath{\le}1$ are reported. PMN shows typical glasslike behavior in…
Pt ions-CeO(2) interaction in Ce(1-x)Pt(x)O(2-delta) (x=0.02) has been studied for the first time by electrochemical method combined with x-ray diffraction and x-ray photoelectron spectroscopy. Working electrodes made of CeO(2) and Ce(0.98)Pt(0.02)O(2-delta) mixed with 30% carbon are treated electrochemically between…
In this paper, we investigate the mechanics of a nanoscaled gigahertz oscillator comprising a carbon molecule oscillating within the centre of a uniform concentric ring or bundle of carbon nanotubes. Two kinds of oscillating molecules are considered, which are a carbon nanotube and a C(60) fullerene. Using the Lennard…
The gelation and aggregation properties of a newly synthesized structurally simplified tetrahexyl pyromellitamide 2 have been studied and compared to the previously reported tetra(ethylhexanoate) pyromellitide 1, indicating that the ester groups in the latter significantly impede its aggregation. Morphology studies (A…
Interfacial tension at the crystal/liquid interface is a crucial and important parameter in crystal growth kinetics. The objective of the present study is to develop a neural network that is simple to use for predicting this important parameter using only from the information of solubility, molecular weight, and densi…
This work investigates the movement of anions during potentiostatic controlled reduction of novel composite materials consisting of high surface area cellulose substrates, extracted from the Cladophora sp. algae, coated with thin ( approximately 50 nm) layers of the intrinsically conducting polymer (ICP) polypyrrole.…
We present the first experimental measurement of the geometric critical exponent beta associated with the percolation probability, the probability a metallic filler belongs to the conducting network, of an electrical composite. The technique employs conducting-tip atomic force microscopy to obtain a conducting areal d…
In this paper we report the design and implementation of a novel automated manufacturing system for carbon nanotube (CNT)-based nanodevices, which integrates a new dielectrophoretic (DEP) microchamber into a robotic-based deposition workstation. The microchamber has been fabricated to separate and select CNTs with the…
A rapid and sensitive method to detect single-walled carbon nanotubes (SWNTs) in biological samples is presented. The method uses polyacrylamide gel electrophoresis (PAGE) followed by quantification of SWNT bands. SWNTs dispersed in bovine serum albumin (BSA) were used to develop the method. When BSA-SWNT dispersions…
Nanopatterned surfaces with hydrophobic and hydrophilic domains were produced using the diblock copolymer polystyrene-block-poly(2-vinyl pyridine) (PS-b-P2VP) and polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA). The PS-b-P2VP diblock copolymer, mixed with the cross-linker benzophenone and spin-coated onto sili…
Nanostructured hydrogenated graphite (C nano H x ) was synthesized here from graphite by ball-milling under a hydrogen (H 2 ) atmosphere. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and transmission electron microscopy (TEM) show that ball milling results in the rupture of graphene sheets creating act…
The atomistic mechanism for the self-assembly of molybdenum into one-dimensional metallic nanowires in a confined environment such as a carbon nanotube is investigated using quantum mechanical calculations. We find that Mo does not organize into linear chains but rather prefers to form four atom per unit cell nanowire…
We study polyisoprene elastomers reinforced with carbon blacks (CBs) of various grades. In addition to mechanical characterization at medium/large elongation ratios, we use deuterium NMR experiments on stretched samples to measure the local strain within the elastomer matrix and X-ray scattering to measure the onset o…
In the present work, thermal evaporation and sol-gel coating techniques were applied to fabricate nanostructured thin ZnO films. The phase structure and surface morphology of the obtained films were investigated by X-ray diffractometer (XRD) and scanning electron microscope (SEM), respectively. The topography and 2D p…
Reaction of [AuCl(PPh(3))] with the zwitterion S(2)CNC(4)H(8)NH(2) yields [(Ph(3)P)Au(S(2)CNC(4)H(8)NH(2))]BF(4). Treatment of this species with NEt(3) and CS(2) followed by [AuCl(PPh(3))] leads to [{(Ph(3)P)Au}(2)(S(2)CNC(4)H(8)NCS(2))], which can also be obtained directly from [AuCl(PPh(3))] and KS(2)CNC(4)H(8)NCS(2…
A nanolaboratory is proposed to realize the capabilities of nanofabrication, nanoinstrumentation and nanoassembly to make three-dimensional structures, devices and systems in the nanoworld. A nanorobotic manipulation system is introduced to realize these capabilities inside a scanning electron microscope or a transmis…
A first-principles-based scheme is used to investigate the nature of the ferroelectric phase transition in the multiferroic ${\text{BiFeO}}_{3}$. This transition possesses several order parameters (that are components of the polarization and of the tilting of oxygen octahedra) with none of them being primary and is so…
Nearly monodisperse single-crystalline palladium (Pd) nanocubes and nanodendrites have been successfully prepared in aqueous solution at room temperature, for the first time, mainly by utilizing the equilibrium between the dissolution and precipitation of the Pd-cetyltrimethylammonium bromide (Pd-CTAB) complexes. The…
We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the $\text{O}\text{ }2p$ valence-band structure of Nb-doped ${\text{SrTiO}}_{3}$, in which a dilute concentration of electrons are doped into the ${d}^{0}$ band insulator. We have found that ARPES spectra at the valence-band maxima at the…
A simple and direct electrodeposition technique is employed to fabricate ZnO nanospikes and nanopillars on indium-tin oxide glass substrates at 70 degrees C without using any template, catalyst, or seed layer. Both ZnO nanospikes and nanopillars exhibit highly crystalline ZnO wurtzite structure with a preferred (0001)…