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 explore the device potential of a tunable-gap bilayer graphene (BG) FET exploiting the possibility of opening a bandgap in BG by applying a vertical electric field via independent gate operation. We evaluate device behavior using atomistic simulations based on the self-consistent solution of the Poisson and Schrodi…
Membranes made of hybrid poly(lactide-co-glycolide)/chitosan fibers (H-PLGA/chitosan) and core/shell structured PLGA/chitosan fibers (C-PLGA/chitosan) were produced by coelectrospinning and coaxial electrospinning, respectively. The morphology, mechanical properties, water uptakes of the electrospun fibrous membranes…
The present investigation was aimed at exploring dendrimer-mediated solubilization and formulation development followed by in vitro, in vivo assessment of piroxicam (PXM) nanocomposite. For this, two dendrimer generations (3.0G and 4.0G) were synthesized and characterized by IR, (1)H NMR spectroscopic and electron mic…
Abstract The N‐(2′‐furyl)‐imidazole ( 1 ) has been prepared and characterized using infrared, Raman and multidimensional nuclear magnetic resonance spectroscopies. Theoretical calculations have been carried out by employing the Density Functional Theory (DFT) method, in order to optimize the geometry of their two conf…
In this work the combination of active coating and modified-atmosphere packaging (MAP) was used to prolong the shelf life of Fior di Latte cheese. The active coating was based on sodium alginate (8% wt/vol) containing lysozyme (0.25 mg/mL) and EDTA, disodium salt (Na(2)-EDTA, 50 mM). The MAP was made up of 30% CO(2),…
This paper deals with structural and morphological developments during flow-induced crystallization of molten isotactic polypropylene (iPP). Several authors have invoked the formation of precursors in the early stages of this process. However, it is not clear whether these precursors can be generated and can crystalli…
The logical structure and the basic theorems of time-dependent current density functional theory (TDCDFT) are analyzed and reconsidered from the point of view of recently proposed time-dependent deformation functional theory (TDDefFT). It is shown that the formalism of TDDefFT allows to avoid a traditional external po…
Abstract In the present study, the effects of intumescent flame retardant (IFR) incorporating organically modified montmorillonite (O‐MMT) on the flame retardancy and melt stability of PLA were investigated. The flame‐retardant PLA was prepared using a twin‐screw extruder and a two roll mill. Then, the influence of IF…
We consider phase transitions and potential coexistence of spin-density-wave (SDW) magnetic order and extended $s$-wave $({s}^{+})$ superconducting order within a two-band itinerant model of iron pnictides in which SDW magnetism and ${s}^{+}$ superconductivity are competing orders. We show that depending on parameters…
We propose and computationally analyze a nonvolatile static random access memory (NV-SRAM) cell using magnetic tunnel junctions (MTJs) with magnetic-field-free current-induced magnetization switching (CIMS) architecture. A pair of MTJs connected to the storage nodes of a standard SRAM cell with CIMS architecture enabl…
Ttrioctylphosphine oxide (TOPO) stabilized CdSe/ZnS quantum dots (QD) were modified with 6-ferrocenyl-1-hexanethiol (FcHT) or 11-ferrocenyl-1-undecanethiol (FcUT) via ligand exchange. The presence of ferrocenyl thiol ligands on the surface of the QDs was proven by diffusion ordered NMR spectroscopy. Upon replacement o…
Melanomas remain associated with dismal prognosis because they are naturally resistant to apoptosis and they markedly metastasize. Up-regulated expression of sodium pump alpha sub-units has previously been demonstrated when comparing metastatic to non-metastatic melanomas. Our previous data revealed that impairing sod…
Defects such as oxygen vacancies dominate the electronic and chemical properties of ceria. However, fundamental understanding of such defects, especially clusters of vacancies, is sparse. In this work, we use density-functional theory with the addition of the Hubbard $U$ term to investigate various oxygen vacancies, i…
Monoclinic beta-silver vanadate (beta-AgVO(3)) nanoribbons with widths of 300-600 nm, thicknesses of ca. 40 nm, and lengths of 200-300 microm can be easily synthesized in high yield directly from a hydrothermal reaction between V(2)O(5) and AgNO(3) in a solution containing a small amount of pyridine. The results demon…
We present a detailed first principles study of Fe-pnictides with particular emphasis on competing magnetic interactions, structural phase transition, giant magneto-elastic coupling and its effect on phonons. The exchange interactions $J_{i,j}(R)$ are calculated up to $\approx 12 $Å$. We find that $J_{i,j}(R)$ has an…
We have studied the nature of the surface charge distribution in ${\text{CeTe}}_{3}$. This is a simple cleavable layered material with a robust one-dimensional incommensurate charge density wave (CDW). Scanning tunneling microscopy (STM) has been applied on the exposed surface of a cleaved single crystal. At 77 K, the…
We have investigated the electronic and transport properties of zigzag Ni-adsorbed graphene nanoribbons (Ni/GNRs) using ab initio calculations. We find that the Ni adatoms lying along the edge of zigzag GNRs represent the energetically most stable configuration, with an energy difference of approximately 0.3 eV when c…
X-ray photon correlation spectroscopy is employed to investigate the motion of dilute suspensions of gold nanoparticles in low-molecular-weight polystyrene melts. At high temperatures, the observed motion is diffusive, with a rate that follows a Vogel-Fulcher temperature dependence. Closer to the glass transition temp…
Photoluminescence properties of novel red-emitting Mn 2+ -activated MZnOS (M = Ca, Ba) phosphors were investigated. Mn 2+ -activated MZnOS phosphors show a single symmetric narrow red emission band in the wavelength range of 550−700 nm due to the 4 T 1 ( 4 G) → 6 A 1 ( 6 S) transition of Mn 2+ . Peak centers are at ab…
We report depressurization amorphization of single-crystal boron carbide (B4C) investigated by in situ high-pressure Raman spectroscopy. It was found that localized amorphization of B4C takes place during unloading from high pressures, and nonhydrostatic stresses play a critical role in the high-pressure phase transit…