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。
Understanding the maximal enhancement of solar absorption in semiconductor materials by light trapping promises the development of affordable solar cells. However, the conventional Lambertian limit is only valid for idealized material systems with weak absorption, and cannot hold for the typical semiconductor material…
Even at room temperature, quantum mechanics plays a major role in determining the quantitative behaviour of light nuclei, changing significantly the values of physical properties such as the heat capacity. However, other observables appear to be only weakly affected by nuclear quantum effects (NQEs): for instance, the…
Raman spectroscopy has been employed to distinguish between the Raman spectrum of pristine hydrogenated diamond like carbon (PHDLC) and that of electrochemically hydrogenated diamond like carbon (ECHDLC). The enhancement of the background photoluminescence (PL) in the Raman spectrum and broadening of PL spectrum of EC…
Crystals are the materials which can be described by uniform periodic lattices. Traditionally, only the 1-, 2-, 3-, 4- and 6-fold rotation symmetries are allowed in crystals because other n-fold rotation symmetries are forbidden by the fully periodic translation symmetry. Materials containing rotation symmetries forbi…
The phase diagram and equation of state of dense nitrogen are of interest in understanding the fundamental physics and chemistry under extreme conditions, including planetary processes, and in discovering new materials. We predict several stable phases of nitrogen at multi-TPa pressures, including a P4/nbm structure c…
Chemical exchange saturation transfer (CEST)-derived, pH-weighted, amide proton transfer (APT) MRI has shown promise in animal studies for the prediction of infarction risk in ischemic tissue. Here, APT MRI was translated to patients with acute stroke (1-24 h post-symptom onset), and assessments of APT contrast, perfu…
New transparent conductive materials are urgently needed for optoelectronic devices. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) will be a promising next-generation transparent electrode material if its conductivity is comparable to that of indium tin oxide (ITO). To enhance significantly the c…
The synthesis of water-soluble nitrogen-doped carbon dots has received great attention, due to their wide applications in oxygen reduction reaction, cell imaging, sensors, and drug delivery. Herein, nitrogen-doped, carbon-rich, highly photoluminescent carbon dots have been synthesized for the first time from ammonium…
<div class="section abstract"><div class="htmlview paragraph">This paper discusses about the feasibility of polypropylene-Starch blend in automotive application. Melt blending of polypropylene -starch Hybrid, polypropylene and talc are done using a co-rotating twin screw extruder. By optimizing the percent…
In this work, corrosion of galvanised steel cord reinforcement in high density polyethylene (HDPE) composite pipes was studied in electrolytes that developed on the cord surface due to permeation of corrosive species through HDPE liner or damage of the liner in petroleum production. Parametric effects, including solut…
We explored the effect of MeV electron beam irradiation (MEBI) under ambient conditions on the growth of graphene by thermal chemical vapor deposition. X-ray photoelectron spectroscopy and Raman spectroscopy clearly revealed that the propagation of irradiation mediated-defects and oxidation on graphene transferred ont…
The dispersion of organo‐layered double hydroxides (O‐LDH) in functionalized polyolefins (POs) is investigated. Two different polyethylene matrices (maleic anhydride (MAH) and diethyl maleate functionalized) are tested and a hydrogenated fatty acid modified LDH is used. The attention is focused on evidencing the inter…
BACKGROUND: As vascularization represents the rate-limiting step in permanent incorporation of hydrogel-based tissue-regeneration templates, the authors sought to identify the material chemistry that would optimize endothelial cell adhesion and invasion into custom hydrogel constructs. The authors further investigated…
Peptide dendrimers are synthetic tree-like molecules composed of amino acids. There are at least two kinds of preferential structural behaviors exhibited by these molecules, which acquire either compact or noncompact shapes. However, the key structural determinants of such behaviors remained, until now, unstudied. Her…
In recent years, the synthesis of silicon carbide nanowires (NWSiC) has been extensively studied and a fast, simple one-step chemical method of branched one-dimensional SiC nanostructure formation from Si/PTFE mixture via a thermolysis route (SHS) has been proposed. The aim of this study is to further develop the prod…
Micrometer-sized spherical polyurethane supports with a narrow size distribution and adjustable porosity were synthesized via the nonaqueous emulsion polymerization technique. They can be directly used in metallocene-catalyzed olefin polymerization, preventing complex aggregation procedures that are typical for other…
Structure, microstructure and low-temperature dielectric properties of undoped SrTiO 3 (STO) thin films prepared by sol–gel and deposited on Si/SiO 2 /TiO 2 /Pt substrates are studied. The effect of annealing temperature and of buffer layers on properties of STO films is analysed. Dielectric permittivity ε ′, relative…
The first synthesis of porous, optically active, magnetic Fe3 O4 @poly(N-acryloyl-leucine) inverse core/shell composite microspheres is reported, in which the core is constructed of chiral polymer and the shell is constructed of Fe3 O4 NPs. The microspheres integrate three significant concepts, "porosity", "chirality"…
The use of localized surface plasmon resonance induced by Ag nanostructures is a promising way for high-efficiency photoelectric conversion. In plasmonic photoelectric conversion devices, however, the chemical instability of Ag in ambient atmosphere and its immediate deterioration have been a critical issue. Here, we…
I review the major research activities of my groups at the National University of Information Technologies, Mechanics, and Optics (St Petersburg) and Nonlinear Physics Center (Canberra, Australia) in the field of electromagnetic metamaterials operating at microwave and optical frequencies.