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 propose a reliable and efficient computational method for predicting elastic and thermal expansion properties in crystals, particularly complex anisotropic molecular solids, and we apply it to the room-temperature orthorhombic $Pnma$ phase of ${\mathrm{LiBH}}_{4}$. Using density-functional theory, we find thermal e…
In this work, a single-layer, multiple-channel guided mode resonance (GMR) Brewster filter with controllable spectral separation is proposed using the plane waveguide method and rigorous coupled-wave analysis. Based on the normalized eigenvalue equation, the controllability of the spectral separation is analyzed when…
Providing a comprehensive overview of the techniques involved in testing concrete in structures, Testing of Concrete in Structures discusses both established techniques and new methods, showing potential for future development, and documenting them with illustrative examples. Topics have been expanded where significan…
In order to reduce the sintering temperature and enhance the piezoelectricity, a small amount of CuO was added into BaTiO3 during sintering. The aging behaviours of these CuO modified BaTiO3 ceramics were studied systematically. For unpoled ceramic, the P–E loop changes gradually from a normal single-loop curve to a d…
Photoluminescent materials may acquire long-term stability and modified luminosity by encapsulation in zeolites. A single crystal of Eu,Tl–Y (FAU, Si/Al = 1.69) was prepared by Tl + -exchange of Na–Y (|Na 71 (H 2 O) x |[Si 121 Al 71 O 384 ]) to give fully Tl + -exchanged zeolite Y, followed by Eu 3+ exchange. It was t…
Gadolinium-oxide clusters in various sizes and stoichiometries have been systematically studied by employing the density functional theory with the generalized gradient approximation. The clusters in bulk stoichiometry are relatively more stable and their binding energies increase with the increasing size. Stoichiomet…
A simple bilayered chiral metamaterial is constructed by using an array of two twisted split ring resonators (SRRs). Theoretical analysis and simulated results show that chiral metamaterial can achieve strong optical activity of linearly polarized electromagnetic (EM) waves. The arbitrary polarization rotation angle c…
We experimentally determine tensile force–elongation diagrams of tapered optical fibers with a nanofiber waist. The tapered optical fibers are produced from standard silica optical fibers using a heat and pull process. Both, the force–elongation data and scanning electron microscope images of the rupture points indica…
We have prepared a high quality single crystal of GdCo2B2 and studied complicated magnetism by measuring the magnetization, AC susceptibility and heat capacity. The results can be conceived in terms of low-temperature antiferromagnetism (below TN = 22 K) undergoing three order to order magnetic phase transitions at T1…
In this work, we consider epitaxial growth of thin crystalline films. Thereby, we propose a new diffuse-interface approximation of a semi-continuous model resolving atomic distances in the growth direction but being coarse-grained in the lateral directions. Mathematically, this leads to a free boundary problem propose…
Generating and controlling chiral symmetry breaking and enantiomeric excess is not only interesting from a fundamental perspective but can also lead to novel functional materials. In this work, we show how the dark conglomerate (DC) liquid crystalline phase characterized by macroscopic chiral domains offers such a pos…
Hydrogenation and electric field are used to tailor the electronic structures of hybrid graphene/hexagonal boron nitride (Gr/BN) and bilayer graphene (Gr/Gr). Without hydrogen adsorption, the electronic structure of Gr/BN is only slightly affected by the electric field, but energy gaps are induced in Gr/Gr because of…
SUMMARY Polyvinyl chloride (PVC) is widely used as an insulating material in various electrical products. It is reported that an exothermic reaction reaching temperatures above 150 °C can be caused by overload currents or inferior electrical wire connections before the ignition of electrical products. The exothermic p…
We describe a process for the growth of a single, electronically decoupled graphene layer on SiC(0001). The method involves annealing in disilane to (1) prepare flat, clean substrates, (2) grow a single graphene layer, and (3) electronically decouple the graphene from the substrate. This approach uses a single process…
ABSTRACT Recently, we have suggested a nanomechanical model for dissipative loss in filled elastomer networks in the context of the Payne effect. The mechanism is based on a total interfiller particle force exhibiting an intermittent loop, due to the combination of short‐range repulsion and dispersion forces with a lo…
The hysteretic piezoelectric response in LaAlO3/SrTiO3 heterostructures can provide important insights into the mechanism for interfacial conductance and its metastability under various conditions. We perform piezoresponse force microscopy experiments on 3 unit cell LaAlO3/SrTiO3 heterostructures. A hysteretic piezore…
Superconducting phases of $({\mathrm{NH}}_{3}){}_{y}M{}_{x}{\mathrm{FeSe}}_{1\ensuremath{-}z}{\mathrm{Te}}_{z}$ have been synthesized by the intercalation of metal atoms $(M:\phantom{\rule{0.16em}{0ex}}\mathrm{Li},\phantom{\rule{0.16em}{0ex}}\mathrm{Na},\phantom{\rule{0.16em}{0ex}}\mathrm{Ca})$ into FeSe and ${\mathrm…
The paper evaluates noncorrosive and inexpensive materials, namely polypropylene sheet, fiberglass, and glass wool, as potential separator materials for electric double-layer capacitor (EDLC) application. Using these materials as separators and the same activated carbon electrodes, properties of two-electrode capacito…
Fine powders of GaOOH nanocrystals are synthesized via a facile hydrolysis process through the solution–solution interface reactions of anhydrous GaCl 3 and distilled water followed by subsequent solvothermal treatment at mild conditions. Well‐faceted α‐ GaOOH hexagonal prism‐like nanorods are prepared through solvoth…
Effect of corrugation of hexagonal carbon network on the collective electron excitations has been studied using optical absorption and X-ray photoelectron spectroscopy in conjunction with density functional theory calculations. Onion-like carbon (OLC) was taken as a material, where graphitic mantle enveloping agglomer…