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。
In this work, different conditions for electrochemically roughening silver substrates were investigated to obtain the best surface-enhanced Raman scattering (SERS) performance. Experimental results indicate that Ag electrodes can be cycled in deoxygenated aqueous solutions containing 0.1 N HCl from −0.3 to +0.2 V vs.A…
Ru–Ta and Ru thin films ( in thickness) as diffusion barrier for Cu metallization on and Si substrates are studied. Experimental results show that the Ru–Ta film exhibits amorphous structure until annealing at , whereas the Ru film crystallizes in as-deposited and annealed states. Sheet resistances of and stacking lay…
The synthesis of well-defined, homodisperse oligoamine structures based on natural basic amino acids, so-called oligoamine "patches", is presented. They contain an intermediary number of cationic groups (exactly 11 amine groups) to allow sufficiently strong, but reversible, binding to anionic surfaces and polymers and…
Intrinsically-skinned asymmetric PANi hollow fibres, fabricated using a process of directly adding large organic acids to highly concentrated PANi solutions, show stability in a wide variety of organic solvents and have shown promising nanofiltration properties, giving high rejections of nanosolutes in acetone.
The synthesis of a hierarchical support, constituted of a network of SiC nanofibers deposited on a SiC foam host resulting in a ceramic material with a controlled macroscopic shape and associated high specific surface area superior to 50 m2 g−1, has been reported for the first time. The new composite combines the nano…
The coexistence of the charge-ordered phase and the ferromagnetic phase has a strong effect on the magnetocaloric property of the nanocrystalline Pr0.65(Ca0.6Sr0.4)0.35MnO3 of average particle size 36 and 78 nm. The temperature dependence of the magnetic entropy change shows a tablelike behavior for the sample with a…
Thick porous anodic films have been prepared using high voltages in a sulphuric acid based electrolyte. The use of H2SO4 low concentration, low bath temperature and the boric acid as modifier allows the anodic porous film to be significantly thickened preventing its chemical dissolution. A new relation including the P…
We report a rapid (within 15 minutes), simple, green, inexpensive, versatile, and reproducible method for the synthesis of Ag triangular and hexagonal nanoplates in aqueous phase under ambient atmosphere. The method involves reducing silver oxide (Ag2O) with hydrazine (N2H4) in the presence of trisodium citrate (TSC)…
Three new organic-inorganic hybrid complexes based on 3d-transition metal monosubstituted Keggin polyoxometalates (POMs) with imidazole (Im) as pendant ligands, formulated as (HIm)(6-)[SiW11O39NiIm]0.8[SiW11O39Ni(H2O)]0.2.7H2O (1), (Im)4Na6[SiW11O39MnIm]0.69[SiW11O39Mn(H2O)]0.31.7.5H2O (2) and (HIm)6[SiW11O39CoIm]0.63…
The purpose of this study was to investigate the effect of moisture on the heat transfer through clothing in relation to the water vapour resistance, type of underwear, location of the moisture and climate. This forms part of the work performed for work package 2 of the European Union THERMPROTECT project. Thermal man…
ZnO nanophosphors with a diameter of 7–50 nm have been fabricated under an oxygen gas atmosphere at room temperature by evaporating ZnO powder or Zn targets using pulsed laser ablation. The size and uniformity of ZnO nanophosphors strongly depend on oxygen gas pressure. Results of cathodoluminescence analysis show str…
In this paper, we describe the synthesis of cholesteryl compounds of different functionality. A series of polymer‐stabilised cholesteric liquid crystal (PSCLC) cells are prepared by photo‐polymerisation of a cholesteric liquid crystal (Ch‐LC) mixture containing a non‐reactive liquid crystal, a nematic diacrylate and t…
N-substituted pyrazole dialdehydes are shown to react with a tripyrrane under '3 + 1' conditions to give aza-analogues of the N-confused porphyrins; these novel porphyrinoids show borderline aromatic properties and readily afford organometallic derivatives with Ni(OAc)2 and Pd(OAc)2.
In this work we describe a simple electrochemical process to fabricate an air stable nonvolatile memory device based on polyaniline (PANI) and gold (Au) particles in one step. The PANI and Au particle composite material was synthesized by cyclic voltammetry on a modified ITO glass in the room temperature ionic liquid…
We report rational design of amphiphilic polymers capable of making carbon nanotubes (CNTs) highly water dispersible and resistant to biofouling; such CNTs can be conjugated with bioactive molecules so as to be potential drug delivery vehicles.
Bark residues are mostly used for thermal energy production. However, a better utilization of that resource could be as raw material for particleboard manufacturing. The use of bark in wood particleboard manufacturing is currently viewed negatively due to the fact that an excessive bark content in the furnish produces…
This paper provides an overview of two potential applications of carbon nanotube devices in microwave technology. Firstly, the main structural, mechanical, thermal and electronic properties of carbon nanotubes are briefly reviewed. Then, the possibilities offered by metallic carbon nanotubes as nano-antennas in the E-…
The preparation, crystal structures and magnetic properties of the copper(II) complexes of formula [Cu(pyim)(tcm)(2)](n) (1), [Cu(bpy)(tcm)(2)](n) (2), [Cu(4)(bpz)(4)(tcm)(8)] (3), {[Cu(terpy)(tcm)].tcm}(n) (4) and {[Cu(2)(tppz)(tcm)(4)].3/2H(2)O}(n) (5) [pyim = 2-(2-pyridyl)imidazole, tcm = tricyanomethanide, bpy = 2…
X-Ray diffraction and electrochemical (de)hydrogenation were performed in situ to monitor the symmetry of the unit cells of MgyTi100−y thin film alloys (70 ≤ y ≤ 90 at.% Mg) along the pressure–composition isotherms at room temperature. The diffraction patterns show that the crystal structures of all as-deposited alloy…
Writing acceptance tests early is a requirements engineering technique that can save time and money and help businesses better respond to change. We believe that concrete requirements blend with acceptance tests in much the same way as the two sides of a strip of paper become one side in a Mobius strip. In other words…