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。
We developed a high c -axis oriented stand-alone ZnO self-assembled film. ZnO nanosheets were grown at the air–liquid interface to form a large ZnO film by Zn ion supply from an aqueous solution. The ZnO film had sufficiently high strength to freely stand alone and showed high c -axis orientation. The film can be past…
Gd-DO3A-diph and Gd-AAZTAC17 are lipophilic magnetic resonance imaging (MRI) agents that display high affinity for low-density lipoprotein (LDL) particles. However, on binding to LDL, Gd-DO3A-diph shows a decreased hydration that results in a lower enhancement of water proton relaxation rate. Conversely, Gd-AAZTAC17 d…
The synthesis and characterization of solution processable, semi-fluorinated perfluorocyclobutyl (PFCB) aryl ether polymers possessing covalently bound pendant polyhedral oligomeric silsesquioxanes (POSS) cages is reported. The synthesis of POSS aryl trifluorovinyl ether (TFVE) monomers was accomplished by the condens…
Control over the diameter of nanotubes is of significance in manipulating their properties, which depend on their dimensions in addition to their structure and composition. This aspect has remained a challenge in both carbon and inorganic nanotubes, since there is no obvious aspect of the formation mechanism that allo…
This report describes a simple method for preparing encoded microspheres for use in multiplexed biological detection. In this method, hydrophobic trioctylphosphine oxide (TOPO)-capped CdSe@ZnS quantum dots (QDs) are assembled on polyamine-coated microspheres in chloroform and encapsulated in an outer shell of silica n…
Direct current (dc) bias-induced acoustic resonance phenomena have been observed in micromachined tunable thin-film capacitors based on paraelectric Ba0.3Sr0.7TiO3 thin films. Both resonance and antiresonance frequencies are dc bias dependent. The antiresonance frequency is only weakly dc bias dependent and shifts sli…
Pb ( Mg 1 ∕ 3 Nb 2 ∕ 3 ) O 3 – Pb Zr O 3 – Pb Ti O 3 (PMN-PZT) ferroelectric single crystals were grown successfully using the solid state crystal growth method. The crystals were found to exhibit higher Curie temperatures TCs and ferroelectric phase transition temperatures TR-Ts when compared to the binary Pb(Mg1∕3Nb…
This survey paper comprises 5 sections. In Section 1, the reader is introduced to the world of carbon nanotubes where their structural form and properties are highlighted. Section 2 presents the various buckling behaviors exhibited by carbon nanotubes that are discovered by carbon nanotube researchers. The main factor…
A multi-arc model for applications to outdoor insulators under icing conditions is developed. In order to validate the model, several insulator types and configurations, with a dry-arc distance up to 4.17 m were tested under icing conditions. The applied water conductivity of the ice was varied between 30 and 150 muS/…
Gold oxide films obtained on the surface of polycrystalline gold foil upon oxidation by oxygen activated by a high-frequency discharge have been studied by X-ray photoelectron spectroscopy. High-frequency O2 activation affords oxide films more than 3–5 nm thick. As follows from Au4f spectra, the surface gold atoms are…
Increasing worldwide environmental awareness is encouraging scientific research into developing cheaper, more sustainable materials. Industrial hemp fiber is one of the strongest and stiffest available natural fibers [K. L. Pickering, M. Priest, T. Watts, G. Beckermann, and S. N. Alam, J. Adv. Mater. 37, 15 (2005)] an…
Thermoelectric modules composed of eight pairs of p ‐type Ca 2.7 Bi 0.3 Co 4 O 9 (Co‐349) and n ‐type CaMn 0.98 Mo 0.02 O 3 (Mn‐113) bulks were constructed using Ag electrodes and paste including powder of the n ‐type oxide. The former bulks were prepared by hot pressing. On the other hand, the latter were densified u…
In order to gain more information regarding photochemical processes in heterogeneous environments (opaque or powdered samples) laser induced time resolved luminescence and diffuse reflectance transient absorption spectroscopies were used for the study of benzophenone (and other neutral organic molecules) as guests and…
Step-like porous gold nanowires of different shapes and diameters have been prepared by sequentially depositing alloy segments composed of different gold/silver ratios and de-alloying the silver component. For example, step-cone and nano-barbell porous gold nanowires were generated by a membrane-templated sequential d…
Thermotherapy using magnetic nanoparticles, also termed nanotherapy, is a new therapeutic concept in which tumor cells are damaged via local heat application. The principle of this method is direct injection of a magnetic fluid into a tumor and its subsequent heating in an alternating magnetic field. The heat created…
One of the greatest obstacles nanoscale drug delivery systems face is the high nonspecific uptake by the reticular endothelial system (RES). Currently, PEGylation is the method of choice to address this problem. Herein we introduce an engineered high density lipoprotein-based nanocarrier (eHDL) as an enhanced cancer-t…
A series of pyrenyl complexes containing one or two AuPPh 3 or Pt(PEt 3 ) 2 Br groups have been synthesized to probe the effects of metal on the absorption and emission properties of the organic molecule. The absorption spectra of the complexes showed perturbation of the metal centers on the pyrenyl ring, as manifeste…
The effect of increasing the rare earth ion concentration on the physical and spectroscopic properties of Nd3 + doped sodium-lead-borate glasses have been studied for the compositions (10-x) Na2O-30PbO-60B2O3-xNd2O3, where x = 1.00, 1.25, 1.50, 1.75 and 2.00 mol %. Optical band gaps, cut-off wavelengths and various sp…
N-doped ZnO films were prepared by annealing zinc oxynitride films deposited by rf reactive sputtering. Two Raman peaks were observed at 274 and 580 cm−1. According to the variation of the integral intensity of these two peaks, the nitrogen activation at 500 °C [the activation temperature (AT)] has been obtained. Belo…
Alternative uses of pig manure are being considered, including separation and eventual incineration of the solid fraction to produce energy and ash. The efficiency of a screw press, a decanting centrifuge and chemical treatment in transferring N, P and heavy metals from slurry to a solid fraction were compared. Chemic…