Materials Literature
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In-plane ferroelectric polarization in BaTiO3 (BTO) epitaxial thin films on MgAl2O4(001) (MAO) is reported. The directional dependence of both in-plane polarization curves and Raman spectroscopy shows that the films have an orthorhombic structure at room temperature, in contrast to the tetragonal structure of the corr…
Silanol polycondensation is an important industrial process that is used to produce high-molecular-weight silicones for a wide array of applications. This technology is practiced commercially using strong Brønsted acids or bases that produce cyclosiloxane byproducts that can compromise performance properties and are a…
Interest in silver-based semiconductors dates to the early years of analog photography. On the other hand, the recent discovery of new silver oxide-based ternary semiconductors has caused a resurgence of interest in these compounds for new technologies. In this vein, the present study provides a counter example to the…
Abstract Using deep learning to analyze mechanical stress distributions has been gaining interest with the demand for fast stress analysis methods. Deep learning approaches have achieved excellent outcomes when utilized to speed up stress computation and learn the physics without prior knowledge of underlying equation…
Abstract ZrO2 nanocrystals with spheres and elongated platelets were systemically prepared through a simple hydrothermal method by the use of ZrOCl2·8H2O and CH3COOK as raw materials. The anisotropic morphology and formation mechanism of the monoclinic and/or tetragonal ZrO2 were investigated by X-ray diffraction, Fou…
Mg clay minerals are usually associated with carbonates in alkaline-saline environments, precipitated from solution and/or transformation from other minerals. The aim of this research is to identify the mineralogy and geochemistry of clay minerals in different alkaline lakes in the Nhecolândia region, the southernmost…
The formation of defect-free two-dimensional nanocrystal (NC) superstructures remains a challenge as persistent defects hinder charge delocalization and related device performance. Understanding defect formation is an important step toward developing strategies to mitigate their formation. However, specific mechanisms…
The last past two decades have witnessed tremendous scientific and technological interest in zinc-oxide (ZnO), a wide-band gap II-VI semiconductor with unparalleled optoelectronic, piezoelectric, thermal and transport properties. Herein, we present a clear view of the electronic structure properties of cubic (3C), hex…
We have performed magnetotransport measurements in CeTe3 thin films down to 0.2 K. It is known that CeTe3 has two magnetic transitions at TN1≈3 K and TN2≈1 K. A clear Shubnikov–de-Haas (SdH) oscillation was observed at 4 K, demonstrating the strong two-dimensional nature in this material. Below TN2, the SdH oscillatio…
Reactive polyurethane hot-melt resin (moisture-cured reactive polyurethane, PUR) could successfully be prepared from poly(tetramethylene ether) glycol (PTMG), castor oil and dimethylglyoxime (DMG) by one or two-stage synthesis. Fourier-transform infrared spectroscopy (FTIR) analysis showed that the synthesis resins be…
Using extensive nonequilibrium molecular dynamics simulations, we investigate a glass-forming binary Lennard-Jones mixture under shear. Both supercooled liquids and glasses are considered. Our focus is on the characterization of inhomogeneous flow patterns such as shear bands that appear as a transient response to the…
Excavation process often induces the unloading rock mass to be in different damage stages, thus changing the propagation and attenuation characteristics of shock-wave energy in rock mass. This paper involved an investigation on the energy dissipation principles during unloading stress process. First, the paper present…
The electrical transport properties of rare-earth tritelluride TbTe3 are investigated at low temperatures and high magnetic fields. The charge-density-wave and anti-ferromagnetic transition are found at 334 K (340 K) and 6.0 K (9.4 K) for bulk TbTe3 (thin device), respectively. An extremely large and non-saturating ma…
Abstract Stimuli‐responsive electrospun fibers loaded with therapeutic agents for smart delivery are attractive biomedical applications. However, development of such fibers requires the use of complex chemical processes that can induce toxicity, reduce fiber quality, or prohibit fiber electrospinnablity. To address th…
Abstract Theoretical models that reliably can predict off‐stoichiometry in materials via accurate descriptions of underlying thermodynamics are crucial for energy applications. For example, transition‐metal and rare‐earth oxides that can tolerate a large number of oxygen vacancies, such as CeO2 and doped CeO2, can spl…
Abstract Covalent organic frameworks (COFs) made of light atoms such as H, C, N, and O with a significant void-to-framework ratio are excellent low-density supports for nanoparticles (nPs). Their framework can be precoded with heteroatoms to ensure binding with metallic nanoclusters. With these advantages, if controll…
Tunable plasmonic properties of metallic nanostructures play a significant role in enhancing various photo-optical phenomena including solar energy conversion, nonlinear optics, photoluminescence and photocatalysis. Understanding the fast plasmon decay mechanisms is essential for developing practical applications util…
Abstract Photoluminescence (PL) of single-walled carbon nanotubes (SWCNTs) in the near-infrared (NIR) region (E11 emission) is attractive, especially for bioimaging and biosensing in vivo because of the good transparency of the body in the NIR region. In this study, we achieved brighter NIR emission of SWCNTs compared…
Significance The results demonstrated here show superconductivity in the antiferromagnetic BaFe 2 As 2 without chemical substitution, by atomic level control of local structure through epitaxial superlattice design. The interfacial interactions modify the FeAs 4 tetrahedra via systematic control of tetragonal and orth…
Vapochromic behaviour of porous crystals is beneficial for facile and rapid detection of gaseous molecules without electricity. Toward this end, tailored molecular designs have been established for metal-organic, covalent-bonded and hydrogen-bonded frameworks. Here, we explore the hydrochromic chemistry of a van der W…