Materials Literature
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The angular etching yields of polysilicon in Cl2∕Ar plasmas, and dielectric materials (thermal silicon dioxide and low-k dielectric coral) in fluorocarbon plasmas, have been characterized in an inductively coupled plasma beam apparatus. The effects of ion energy, feed gas composition, and plasma source pressure are st…
This paper presents the results obtained from the study about flow distribution in maintaining uniformity of flow fields in fuel cells. Three novel flow distribution designs on bipolar plates are proposed for a proton exchange membrane fuel cell (PEMFC). The flow distributors have multiple levels of bifurcations to sp…
We demonstrate herein a novel and versatile solution-based methodology for fabricating self-organized two-dimensional (2D) Au nanoparticle arrays on glass using in situ nucleation at an aminosilane monolayer followed by seeded, electroless growth; subsequent deposition of Ag produced Au@Ag core–shell nanoparticulate f…
Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)2 in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. 113Cd shielding tensors an…
We have studied the effect of Pb 2+ impurities and Pb 2+ -Pb 4+ pairs on the optical absorption between 200 and 860 nm in single-crystal gadolinium gallium garnet films grown by liquid-phase epitaxy from supercooled PbO-B 2 O 3 fluxed melts containing 0.1–0.5 mol% gadolinia.
Application of magnetic materials for hyperthermia of biological tissue has been known, in principle, for more than four decades. Many empirical works were done in order to conflrm a therapeutic efiect on several types of tumors by performing experiments with animals or using cancerous cell cultures. The main idea of…
The pore structure and electrochemical performance of mesoporous carbons prepared by the chemical activation method as an electrode material for a supercapacitor were investigated in this work. It is found that the impregnation ratio exerts significant effect on the pore structure of the carbons, and mesoporous carbon…
In an earlier study, a combination of sieving and elutriation (airflow) was found to be effective in separating fiber from distillers dried grains with solubles (DDGS); the elutriation column diameter used was 63 mm. Larger quantities of fractions were needed for conducting studies on coproduct production from the fra…
A method of preparing three-dimensional copper cellular architecture by multiple-step electrodeposition without any polymer framework is reported in this article. Simultaneously, the physical properties and strengthening mechanism of this material in the second electrodeposition was also investigated by means of scann…
The chemical control of impurity such as hydrogen and oxygen in coolants is one of the critical issues for the development of liquid metal cooled fast reactors and self-cooled liquid breeder blankets for fusion reactors. Especially, hydrogen (isotopes) level is the key parameter for corrosion and mechanical properties…
The focus of this report is the synthesis and properties of two new analogues of ruthenium(ii) tris-bipyridine, a monomer and dimer. The complexes contain the ligand 6,6'-(ethan-1,2-diyl)bis-2,2'-bipyridine (O-bpy) which contains two bipyridine units bridged in the 6,6' positions by an ethylene bridge. Crystal structu…
5-(4-pyridinyl)-1,3,4-oxadiazole-2-thiol (Hpyt) spontaneously adsorbs on gold forming SAMs (self-assembled monolayers) that, based on STM (Scanning Tunneling Microscopy) and electrochemical data, contain pinholes through which [Fe(CN)6]4- and [Ru(NH3)6]3+ probe molecules access the underlying gold electrode. For the f…
数十nmから数μmの不規則な細孔構造を有する多孔体（不規則性多孔体）は、自動車触媒、排ガス処理用フィルタ、燃料電池用電極触媒、リチウム電池用電極触媒などをはじめとして様々な用途に用いられている。これら不規則性多孔体の特性・信頼性向上に向けた研究開発アプローチは、材料物性の制御、相互作用界面に注目した界面制御、大表面積・高活性化のための構造制御、に大別される。このうち構造制御は、理論的に有効な手法が存在せず、実験による経験的試行錯誤による研究開発が大きな役割を果たしてきた。著者らは、不規則性多孔体微細構造の合理的最適化というブレイクスルーに向けて、三次元多孔質シミュレータを開発してきた。本研究では、開発した三次元多孔質シミュレータを…
It is crucial for hydrophobic drugs to be dissolved and stabilized by carriers in aqueous systems and then to be delivered into target cells. An amphiphilic self‐assembling peptide EAK16‐I (Ac‐AEAKAEAKAEAKAEAK‐NH2) is reported here to be able to stabilize a model hydrophobic compound, pyrene, in aqueous solution, resu…
In order to develop a process to obtain a functional layer on the surface of a magnesium alloy, the composite layer including in situ Mg2Si was formed on the surface by a gravity die-casting. The optimum fabrication condition to form the composite layer and the formation mechanism of the layer were clarified by observ…
In this work, the microstructure, thermal and electric conductivity properties of near-zero thermal expansion ZrW2O8/ZrO2 and Al2O3 added ZrW2O8/ZrO2 composites were studied. Both the two composites exhibit very low thermal conductivity and the thermal conductivity decreases slightly as the temperature increases. The…
This paper outlines the preparation of monodisperse MnFe(2)O(4) nanoparticles modified with omega-alkenyl moieties in a one-pot reaction, requiring no ligand-exchange step, followed by deposition of the resulting surfactant-coated nanoparticles onto a hydrogen-terminated silicon (111) wafer and covalent anchoring to t…
PURPOSE: To evaluate the effect of the vascular disrupting drugs combretastatin A-4 disodium phosphate (CA4DP) and 5,6-dimethylxanthenone-4-acetic acid (DMXAA) on the intra/extracellular volume fraction of water and blood perfusion in tumours using MRI. METHODS AND MATERIALS: Mice with C3H mammary carcinomas underwent…
Multiplex single nucleotide polymorphisms analysis has found a great demand in human genetics and pharmacogenetics. The present study reports a novel approach for a genotyping assay that could achieve simultaneous identification of multiple point mutations via a ligase-mediated gold nanoparticle assembly. Based on the…
Silver ion has been used for centuries to prevent and treat a variety of diseases and infections. In recent years, extensive studies have been undertaken on the use of antimicrobial properties of silver, incorporated within medical devices. The aim of this study was to prepare a formulation containing silver ion, whic…