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 paper new acceleration sensors using flexoelectric barium strontium titanate (BST) were designed, fabricated and tested for vibration monitoring. The flexoelectric sensors were configured as rectangular and trapezoidal cross-section micro-unimorphs with a BST layer bonded onto a Si substrate. Proof masses were…
Abstract X‐ray induced luminescence (XL) properties of phosphor materials made of samarium doped barium sulfide have been investigated. The samples were prepared by solid‐phase reaction method heated at 1200 °C for 10 hours from the mixture of barium sulfide (BaS, 99.9%) and samarium sulfide (Sm 2 S 3 , 99.9%) in evac…
Magnesium, as the lightest structural metal, has been widely used in the automotive and aerospace industries. Porosity is the main issue in the welding of magnesium alloys and can be caused by surface coatings, hydrogen gas, pre-existing porosity, the collapse of an unstable keyhole and vaporization of alloying elemen…
Improving the high‐temperature strength and stiffness of Ti 3 SiC 2 is the task of many investigations. However, methods for high‐temperature strengthening have not been established although various ways are applicable to enhance the room‐temperature mechanical properties of Ti 3 SiC 2 . In this work, we report that s…
When embarking upon X-ray diffraction data collection from a potentially novel macromolecular crystal form, it can be useful to ascertain whether the measured data reflect a crystal form that is already recorded in the Protein Data Bank and, if so, whether it is part of a large family of related structures. Providing…
The heating behavior of La NiO 3 ( LNO ) films on SiO 2 / Si substrate heated by 2.45 GHz microwave irradiation in the microwave magnetic field was first investigated, and then amorphous Pb ( Zr 0.52 Ti 0.48 ) O 3 ( PZT ) thin films were deposited on LNO ‐coated SiO 2 / Si substrates by a sol‐gel method and crystalliz…
The distributions of sizes of silver nanoparticles that were deposited on monolayer, bilayer, and trilayer graphene films were observed. Deposition was carried out by thermal evaporation and the graphene films, placed on SiO2/Si substrates, were obtained by the mechanical splitting of graphite. Before the deposition,…
The design, synthesis and investigation of a series of porphyrins displaying smectic liquid crystal phase behaviour at room temperature are described. The molecules are constructed in a modular approach, consisting of porphyrin units linked via hydrocarbon and siloxane spacers to calamitic cyanobiphenyl units. The inv…
Abstract Lead sulfide (PbS)/polystyrene (PS) nanocomposite (NCP) thin films have been synthesized from solution by in situ thermolysis. PbS nanocrystals (NCs) are of 3–5 nm size as determined from Transmission Electron Microscope. The films are p‐type with dark conductivity of ∼10 −6 S cm −1 and high photoconductivity…
Abstract 10%‐Ce doped GdScO 3 perovskite type single crystal was grown by the Czochralski process. The Ce concentration in the crystal was measured. No impurity phases were observed by powder X‐ray diffraction analysis. We evaluated the optical and radiation properties of the grown crystal. Ce:GdScO 3 crystal showed p…
A new family of four-ring achiral bent-core compounds derived from 2-methyl 3-amino benzoic acid with the methyl group in the bent direction incorporated into the central core have been designed and synthesised. These compounds possess an alkoxy chain attached at only one end of the bent core molecule, while the other…
Monodispersed five-fold twinned gold (Au) nanocrystals (NCs) with a pentagon (Pg) morphology exclusively bounded by {110} facets have been prepared through a PVP-assisted seed-mediated growth in N,N-dimethylformamide (DMF). Low water concentration, low reaction temperature and existence of DMF have been confirmed to p…
In the present study, particles with different Bi2Fe4O9 micro/nanostructures with a few particular morphologies (flower-like nanoplatelets, hierarchical microstructures, perfectly square platelets single crystals, etc.) obtained under specific hydrothermal synthesis conditions were investigated. The role of the proces…
Abstract Flexible bitopic ligand 1‐(tetrazol‐1‐yl)‐3‐(1,2,3‐triazol‐1‐yl)propane (ptrtz) reacts with Fe(ClO 4 ) 2 · 6H 2 O to form two‐dimensional (2D) coordination network [Fe(ptrtz) 3 ](ClO 4 ) 2 · MeCN ( 1 ) in which two chemically different spin crossover (SCO) Fe II centers are observed. Although two 1,2,3‐triazo…
Twaron aramid fibers (AFs) were modified by atmospheric air dielectric barrier discharge plasma with various parameters. The wettability of plasma-treated AF was observed by means of contact angle and surface free energy measurement. Surface roughness was investigated with the help of scanning electron microscopy. Ene…
Abstract In this paper, we report on the diameter distribution of boron‐doped single‐walled carbon nanotubes grown from triethyl borate with high vacuum chemical vapor deposition, using multi‐frequency Raman resonance spectroscopy. The nanotube yield is higher than in previously reported material produced with the sam…
Und Palladium ergibt drei: Während bei der Cu-vermittelten Reaktion cyclische Dimere entstehen, liefert die Pd-katalysierte oxidative Kupplung von 2,18-Diethinylporphyrinen bevorzugt cyclische Trimere (siehe Schema). Auf gleiche Art wurde auch ein Porphyrinhexamer mit doppelt 1,3-Butadiin-verbrücktem konjugiertem Trim…
A field study on corrosion was conducted on several copper alloys subjected to prolonged exposure in seawater. Rectangular plates made of nine alloys were deployed for a year in the North Atlantic Ocean. Material loss rates were quantified by measuring the difference in weight between the initial virgin specimens and…
The increased heat transfer achieved through dropwise condensation, as compared to filmwise condensation, has the potential to substantially impact a variety of applications including high-heat flux thermal management systems, integrated electronics cooling, and various industrial and chemical processes. Here, we repo…
A GTHV (gas turbine hybrid vehicle) is an electric vehicle with traction entirely electric on 1 or 2 axles, equipped with a small turbogas whose only function is that of recharging the battery pack and possibly other energy storage devices present on board. After a brief review of the history of the GTHV technology, a…